- Linux-kselftest-mirror - lists.linaro.org

[RFC PATCH for 4.18 17/23] cpu_opv: selftests: Implement selftests (v7)

by Mathieu Desnoyers

Implement cpu_opv selftests. It needs to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Use OVERRIDE_TARGETS define for this. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- Changes since v1: - Expose similar library API as rseq: Expose library API closely matching the rseq APIs, following removal of the event counter from the rseq kernel API. - Update makefile to fix make run_tests dependency on "all". - Introduce a OVERRIDE_TARGETS. Changes since v2: - Test page faults. Changes since v3: - Move lib.mk OVERRIDE_TARGETS change to its own patch. - Printout TAP output. Changes since v4: - Retry internally within cpu_op_cmpnev_storeoffp_load(). Changes since v5: - Test huge pages. Change since v6: - Test CPU_OP_NR_FLAG, - Invoke ksft_test_result_fail rather than ksft_exit_fail_msg, - Test CPU parameter outside of possible CPUs range, - Test CPU parameter outside of allowed CPUs. --- MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/cpu-opv/.gitignore | 1 + tools/testing/selftests/cpu-opv/Makefile | 17 + .../testing/selftests/cpu-opv/basic_cpu_opv_test.c | 1368 ++++++++++++++++++++ tools/testing/selftests/cpu-opv/cpu-op.c | 352 +++++ tools/testing/selftests/cpu-opv/cpu-op.h | 59 + 7 files changed, 1799 insertions(+) create mode 100644 tools/testing/selftests/cpu-opv/.gitignore create mode 100644 tools/testing/selftests/cpu-opv/Makefile create mode 100644 tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.h diff --git a/MAINTAINERS b/MAINTAINERS index 7ab90224634c..adbe93ed27b9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3750,6 +3750,7 @@ L: linux-kernel(a)vger.kernel.org S: Supported F: kernel/cpu_opv.c F: include/uapi/linux/cpu_opv.h +F: tools/testing/selftests/cpu-opv/ CRAMFS FILESYSTEM M: Nicolas Pitre <nico(a)linaro.org> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 7442dfb73b7f..1322e63f5963 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -5,6 +5,7 @@ TARGETS += breakpoints TARGETS += capabilities TARGETS += cpufreq TARGETS += cpu-hotplug +TARGETS += cpu-opv TARGETS += efivarfs TARGETS += exec TARGETS += firmware diff --git a/tools/testing/selftests/cpu-opv/.gitignore b/tools/testing/selftests/cpu-opv/.gitignore new file mode 100644 index 000000000000..c7186eb95cf5 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/.gitignore @@ -0,0 +1 @@ +basic_cpu_opv_test diff --git a/tools/testing/selftests/cpu-opv/Makefile b/tools/testing/selftests/cpu-opv/Makefile new file mode 100644 index 000000000000..21e63545d521 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/Makefile @@ -0,0 +1,17 @@ +CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ + +# Own dependencies because we only want to build against 1st prerequisite, but +# still track changes to header files and depend on shared object. +OVERRIDE_TARGETS = 1 + +TEST_GEN_PROGS = basic_cpu_opv_test + +TEST_GEN_PROGS_EXTENDED = libcpu-op.so + +include ../lib.mk + +$(OUTPUT)/libcpu-op.so: cpu-op.c cpu-op.h + $(CC) $(CFLAGS) -shared -fPIC $< -o $@ + +$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) cpu-op.h + $(CC) $(CFLAGS) $< -lcpu-op -o $@ diff --git a/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c new file mode 100644 index 000000000000..792b68f4f330 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c @@ -0,0 +1,1368 @@ +/* + * Basic test coverage for cpu_opv system call. + */ + +#define _GNU_SOURCE +#include <assert.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/time.h> +#include <sys/mman.h> +#include <sched.h> + +#include "../kselftest.h" + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +#define TESTBUFLEN 4096 +#define TESTBUFLEN_CMP 16 + +#define TESTBUFLEN_PAGE_MAX 65536 + +#define NR_PF_ARRAY 16384 +#define PF_ARRAY_LEN 4096 + +#define NR_HUGE_ARRAY 512 +#define HUGEMAPLEN (NR_HUGE_ARRAY * PF_ARRAY_LEN) + +/* 64 MB arrays for page fault testing. */ +char pf_array_dst[NR_PF_ARRAY][PF_ARRAY_LEN]; +char pf_array_src[NR_PF_ARRAY][PF_ARRAY_LEN]; + +static int test_ops_supported(void) +{ + const char *test_name = "test_ops_supported"; + int ret; + + ret = cpu_opv(NULL, 0, -1, CPU_OP_NR_FLAG); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret < NR_CPU_OPS) { + ksft_test_result_fail("%s test: only %d operations supported, expecting at least %d\n", + test_name, ret, NR_CPU_OPS); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_compare_eq_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_eq_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq same"; + + /* Test compare_eq */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret > 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 0); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_compare_eq_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq different"; + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret == 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 1); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_compare_ne_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_ne_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne same"; + + /* Test compare_ne */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret == 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 1); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_compare_ne_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne different"; + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 0); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_2compare_eq_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_eq_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_eq index"; + + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare failure is op[0], expect 1. */ + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 1) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 1); + return -1; + } + + /* All compares succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf2[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 2) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 2); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_2compare_ne_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_ne_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_ne index"; + + memset(buf1, 0, TESTBUFLEN_CMP); + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare ne failure is op[0], expect 1. */ + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 1) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 1); + return -1; + } + + /* All compare ne succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 0) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf4[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret != 2) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, ret, 2); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_memcpy_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy"; + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + for (i = 0; i < TESTBUFLEN; i++) { + if (buf2[i] != (char)i) { + ksft_test_result_fail("%s test: unexpected value at offset %d. Found %d. Should be %d.\n", + test_name, i, buf2[i], (char)i); + return -1; + } + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_memcpy_u32(void) +{ + int ret; + uint32_t v1, v2; + const char *test_name = "test_memcpy_u32"; + + /* Test memcpy_u32 */ + v1 = 42; + v2 = 0; + ret = test_memcpy_op(&v2, &v1, sizeof(v1)); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v1 != v2) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v2, v1); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_memcpy_mb_memcpy_op(void *dst1, void *src1, + void *dst2, void *src2, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst1), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src1), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MB_OP, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst2), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src2), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_mb_memcpy(void) +{ + int ret; + int v1, v2, v3; + const char *test_name = "test_memcpy_mb_memcpy"; + + /* Test memcpy */ + v1 = 42; + v2 = v3 = 0; + ret = test_memcpy_mb_memcpy_op(&v2, &v1, &v3, &v2, sizeof(int)); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v3 != v1) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v3, v1); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_add_op(int *v, int64_t increment) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_add(v, increment, sizeof(*v), cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_add(void) +{ + int orig_v = 42, v, ret; + int increment = 1; + const char *test_name = "test_add"; + + v = orig_v; + ret = test_add_op(&v, increment); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increment) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, + orig_v + increment); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_two_add_op(int *v, int64_t *increments) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[0], + .u.arithmetic_op.expect_fault_p = 0, + }, + [1] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[1], + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_two_add(void) +{ + int orig_v = 42, v, ret; + int64_t increments[2] = { 99, 123 }; + const char *test_name = "test_two_add"; + + v = orig_v; + ret = test_two_add_op(&v, increments); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increments[0] + increments[1]) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, + orig_v + increments[0] + increments[1]); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_or_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_OR_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_or(void) +{ + int orig_v = 0xFF00000, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_or"; + + v = orig_v; + ret = test_or_op(&v, mask); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v | mask)) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, orig_v | mask); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_and_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_AND_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_and(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_and"; + + v = orig_v; + ret = test_and_op(&v, mask); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v & mask)) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, orig_v & mask); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_xor_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_XOR_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_xor(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_xor"; + + v = orig_v; + ret = test_xor_op(&v, mask); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v ^ mask)) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, orig_v ^ mask); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_lshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_LSHIFT_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_lshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_lshift"; + + v = orig_v; + ret = test_lshift_op(&v, bits); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v << bits)) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, orig_v << bits); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_rshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_RSHIFT_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_rshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_rshift"; + + v = orig_v; + ret = test_rshift_op(&v, bits); + if (ret) { + ksft_test_result_fail("%s test: returned with %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v >> bits)) { + ksft_test_result_fail("%s test: unexpected value %d. Should be %d.\n", + test_name, v, orig_v >> bits); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_cmpxchg_op(void *v, void *expect, void *old, void *n, + size_t len) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_cmpxchg(v, expect, old, n, len, cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_cmpxchg_success(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_cmpxchg success"; + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret) { + ksft_test_result_fail("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + if (v != n) { + ksft_test_result_fail("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)n); + return -1; + } + if (old != orig_v) { + ksft_test_result_fail("%s old is %lld, expecting %lld\n", + test_name, (long long)old, + (long long)orig_v); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_cmpxchg_fail(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 123, old = 0, n = 3; + const char *test_name = "test_cmpxchg fail"; + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (ret == 0) { + ksft_test_result_fail("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + if (v == n) { + ksft_test_result_fail("%s returned %lld, expecting %lld\n", + test_name, (long long)v, + (long long)orig_v); + return -1; + } + if (old != orig_v) { + ksft_test_result_fail("%s old is %lld, expecting %lld\n", + test_name, (long long)old, + (long long)orig_v); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_memcpy_expect_fault_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_memcpy_fault(void) +{ + int ret; + char buf1[TESTBUFLEN]; + const char *test_name = "test_memcpy_fault"; + + /* Test memcpy */ + ret = test_memcpy_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EFAULT)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + /* Test memcpy expect fault */ + ret = test_memcpy_expect_fault_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EAGAIN)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int do_test_unknown_op(void) +{ + struct cpu_op opvec[] = { + [0] = { + .op = -1, /* Unknown */ + .len = 0, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_unknown_op(void) +{ + int ret; + const char *test_name = "test_unknown_op"; + + ret = do_test_unknown_op(); + if (!ret || (ret < 0 && errno != EINVAL)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int do_test_max_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_max_ops(void) +{ + int ret; + const char *test_name = "test_max_ops"; + + ret = do_test_max_ops(); + if (ret < 0) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int do_test_too_many_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + [16] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_too_many_ops(void) +{ + int ret; + const char *test_name = "test_too_many_ops"; + + ret = do_test_too_many_ops(); + if (!ret || (ret < 0 && errno != EINVAL)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +/* Use 64kB len, largest page size known on Linux. */ +static int test_memcpy_single_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN_PAGE_MAX + 1]; + char buf2[TESTBUFLEN_PAGE_MAX + 1]; + const char *test_name = "test_memcpy_single_too_large"; + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN_PAGE_MAX + 1; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_PAGE_MAX + 1); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN_PAGE_MAX + 1); + if (!ret || (ret < 0 && errno != EINVAL)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +static int test_memcpy_single_ok_sum_too_large_op(void *dst, void *src, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_single_ok_sum_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy_single_ok_sum_too_large"; + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_single_ok_sum_too_large_op(buf2, buf1, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EINVAL)) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return -1; + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +/* + * Iterate over large uninitialized arrays to trigger page faults. + * This includes reading from zero pages. + */ +int test_page_fault(void) +{ + int ret = 0; + uint64_t i; + const char *test_name = "test_page_fault"; + + for (i = 0; i < NR_PF_ARRAY; i++) { + ret = test_memcpy_op(pf_array_dst[i], + pf_array_src[i], + PF_ARRAY_LEN); + if (ret) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return ret; + } + } + ksft_test_result_pass("%s test\n", test_name); + return 0; +} + +/* + * Try to use 2MB huge pages. + */ +int test_hugetlb(void) +{ + int ret = 0; + uint64_t i; + const char *test_name = "test_hugetlb"; + int *dst, *src; + + dst = mmap(NULL, HUGEMAPLEN, PROT_READ | PROT_WRITE, + MAP_HUGETLB | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + if (dst == MAP_FAILED) { + switch (errno) { + case ENOMEM: + case ENOENT: + case EINVAL: + ksft_test_result_skip("%s test.\n", test_name); + goto end; + default: + break; + } + perror("mmap"); + abort(); + } + src = mmap(NULL, HUGEMAPLEN, PROT_READ | PROT_WRITE, + MAP_HUGETLB | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + if (src == MAP_FAILED) { + if (errno == ENOMEM) { + ksft_test_result_skip("%s test.\n", test_name); + goto unmap_dst; + } + perror("mmap"); + abort(); + } + + /* Read/write from/to huge zero pages. */ + for (i = 0; i < NR_HUGE_ARRAY; i++) { + ret = test_memcpy_op(dst + (i * PF_ARRAY_LEN / sizeof(int)), + src + (i * PF_ARRAY_LEN / sizeof(int)), + PF_ARRAY_LEN); + if (ret) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return ret; + } + } + for (i = 0; i < NR_HUGE_ARRAY * (PF_ARRAY_LEN / sizeof(int)); i++) + src[i] = i; + + for (i = 0; i < NR_HUGE_ARRAY; i++) { + ret = test_memcpy_op(dst + (i * PF_ARRAY_LEN / sizeof(int)), + src + (i * PF_ARRAY_LEN / sizeof(int)), + PF_ARRAY_LEN); + if (ret) { + ksft_test_result_fail("%s test: ret = %d, errno = %s\n", + test_name, ret, strerror(errno)); + return ret; + } + } + + for (i = 0; i < NR_HUGE_ARRAY * (PF_ARRAY_LEN / sizeof(int)); i++) { + if (dst[i] != i) { + ksft_test_result_fail("%s mismatch, expect %d, got %d\n", + test_name, i, dst[i]); + return ret; + } + } + + ksft_test_result_pass("%s test\n", test_name); + + if (munmap(src, HUGEMAPLEN)) { + perror("munmap"); + abort(); + } +unmap_dst: + if (munmap(dst, HUGEMAPLEN)) { + perror("munmap"); + abort(); + } +end: + return 0; +} + +static int test_cmpxchg_op_cpu(void *v, void *expect, void *old, void *n, + size_t len, int cpu) +{ + int ret; + + do { + ret = cpu_op_cmpxchg(v, expect, old, n, len, cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_over_possible_cpu(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_over_possible_cpu"; + + v = orig_v; + ret = test_cmpxchg_op_cpu(&v, &expect, &old, &n, sizeof(uint64_t), + 0xFFFFFFFF); + if (ret == 0) { + ksft_test_result_fail("%s test: ret = %d\n", + test_name, ret); + return -1; + } + if (ret < 0 && errno == EINVAL) { + ksft_test_result_pass("%s test\n", test_name); + return 0; + } + ksft_test_result_fail("%s returned %d, errno %s, expecting %d, errno %s\n", + test_name, ret, strerror(errno), + 0, strerror(EINVAL)); + return -1; +} + +static int test_allowed_affinity(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_allowed_affinity"; + cpu_set_t allowed_cpus, cpuset; + + ret = sched_getaffinity(0, sizeof(allowed_cpus), &allowed_cpus); + if (ret) { + ksft_test_result_fail("%s returned %d, errno %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (!(CPU_ISSET(0, &allowed_cpus) && CPU_ISSET(1, &allowed_cpus))) { + ksft_test_result_skip("%s test. Requiring allowed CPUs 0 and 1.\n", + test_name); + return 0; + } + CPU_ZERO(&cpuset); + CPU_SET(0, &cpuset); + if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) { + ksft_test_result_fail("%s test. Unable to set affinity. errno = %s\n", + test_name, strerror(errno)); + return -1; + } + v = orig_v; + ret = test_cmpxchg_op_cpu(&v, &expect, &old, &n, sizeof(uint64_t), + 1); + if (sched_setaffinity(0, sizeof(allowed_cpus), &allowed_cpus) != 0) { + ksft_test_result_fail("%s test. Unable to set affinity. errno = %s\n", + test_name, strerror(errno)); + return -1; + } + if (ret == 0) { + ksft_test_result_fail("%s test: ret = %d\n", + test_name, ret); + return -1; + } + + if (ret < 0 && errno == EINVAL) { + ksft_test_result_pass("%s test\n", test_name); + return 0; + } + ksft_test_result_fail("%s returned %d, errno %s, expecting %d, errno %s\n", + test_name, ret, strerror(errno), + 0, strerror(EINVAL)); + return -1; +} + +int main(int argc, char **argv) +{ + ksft_print_header(); + + test_ops_supported(); + test_compare_eq_same(); + test_compare_eq_diff(); + test_compare_ne_same(); + test_compare_ne_diff(); + test_2compare_eq_index(); + test_2compare_ne_index(); + test_memcpy(); + test_memcpy_u32(); + test_memcpy_mb_memcpy(); + test_add(); + test_two_add(); + test_or(); + test_and(); + test_xor(); + test_lshift(); + test_rshift(); + test_cmpxchg_success(); + test_cmpxchg_fail(); + test_memcpy_fault(); + test_unknown_op(); + test_max_ops(); + test_too_many_ops(); + test_memcpy_single_too_large(); + test_memcpy_single_ok_sum_too_large(); + test_page_fault(); + test_hugetlb(); + test_over_possible_cpu(); + test_allowed_affinity(); + + return ksft_exit_pass(); +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.c b/tools/testing/selftests/cpu-opv/cpu-op.c new file mode 100644 index 000000000000..5981895df25a --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.c @@ -0,0 +1,352 @@ +/* + * cpu-op.c + * + * Copyright (C) 2017 Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; only + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + */ + +#define _GNU_SOURCE +#include <errno.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <syscall.h> +#include <assert.h> +#include <signal.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +#define ACCESS_ONCE(x) (*(__volatile__ __typeof__(x) *)&(x)) +#define WRITE_ONCE(x, v) __extension__ ({ ACCESS_ONCE(x) = (v); }) +#define READ_ONCE(x) ACCESS_ONCE(x) + +int cpu_opv(struct cpu_op *cpu_opv, int cpuopcnt, int cpu, int flags) +{ + return syscall(__NR_cpu_opv, cpu_opv, cpuopcnt, cpu, flags); +} + +int cpu_op_get_current_cpu(void) +{ + int cpu; + + cpu = sched_getcpu(); + if (cpu < 0) { + perror("sched_getcpu()"); + abort(); + } + return cpu; +} + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *n, size_t len, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)old, + .u.memcpy_op.src = (unsigned long)v, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_add(void *v, int64_t count, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = len, + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = count, + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int cpu_op_cmpeqv_storep_expect_fault(intptr_t *v, intptr_t expect, + intptr_t *newp, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)newp, + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on src fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu) +{ + int ret; + + do { + intptr_t oldv = READ_ONCE(*v); + intptr_t *newp = (intptr_t *)(oldv + voffp); + + if (oldv == expectnot) + return 1; + ret = cpu_op_cmpeqv_storep_expect_fault(v, oldv, newp, cpu); + if (!ret) { + *load = oldv; + return 0; + } + } while (ret > 0); + + return -1; +} + +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, + intptr_t newv, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, + intptr_t newv, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, + intptr_t newv, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v2, + .u.compare_op.b = (unsigned long)&expect2, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, + intptr_t newv, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, + intptr_t newv, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_addv(intptr_t *v, int64_t count, int cpu) +{ + return cpu_op_add(v, count, sizeof(intptr_t), cpu); +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.h b/tools/testing/selftests/cpu-opv/cpu-op.h new file mode 100644 index 000000000000..762a38d6e0d0 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.h @@ -0,0 +1,59 @@ +/* + * cpu-op.h + * + * (C) Copyright 2017 - Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef CPU_OPV_H +#define CPU_OPV_H + +#include <stdlib.h> +#include <stdint.h> +#include <linux/cpu_opv.h> + +int cpu_opv(struct cpu_op *cpuopv, int cpuopcnt, int cpu, int flags); +int cpu_op_get_current_cpu(void); + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *_new, size_t len, + int cpu); +int cpu_op_add(void *v, int64_t count, size_t len, int cpu); + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu); +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu); +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, + intptr_t newv, int cpu); +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, + intptr_t newv, int cpu); +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, + intptr_t newv, int cpu); +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, + intptr_t newv, int cpu); +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, + intptr_t newv, int cpu); +int cpu_op_addv(intptr_t *v, int64_t count, int cpu); + +#endif /* CPU_OPV_H_ */ -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

1
0
0 0

[RFC PATCH for 4.18 16/23] selftests: lib.mk: Introduce OVERRIDE_TARGETS

by Mathieu Desnoyers

Introduce OVERRIDE_TARGETS to allow tests to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- tools/testing/selftests/lib.mk | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 7de482a0519d..3d4bdeb072b2 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -105,6 +105,9 @@ COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) endif +# Selftest makefiles can override those targets by setting +# OVERRIDE_TARGETS = 1. +ifeq ($(OVERRIDE_TARGETS),) $(OUTPUT)/%:%.c $(LINK.c) $^ $(LDLIBS) -o $@ @@ -113,5 +116,6 @@ $(OUTPUT)/%.o:%.S $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ +endif .PHONY: run_tests all clean install emit_tests -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

1
0
0 0

[PATCH] kvm: selftests: add -std=gnu99 cflags

by Peng Hao

lib/kvm_util.c: In function ‘kvm_memcmp_hva_gva’: lib/kvm_util.c:332:2: error: ‘for’ loop initial declarations are only allowed in C99 mode So add -std=gnu99 to CFLAGS Signed-off-by: Peng Hao <peng.hao2(a)zte.com.cn> --- tools/testing/selftests/kvm/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index dc44de9..1da541e 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -14,7 +14,7 @@ LIBKVM += $(LIBKVM_$(UNAME_M)) INSTALL_HDR_PATH = $(top_srcdir)/usr LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/ -CFLAGS += -O2 -g -I$(LINUX_HDR_PATH) -Iinclude -I$(<D) +CFLAGS += -O2 -g -std=gnu99 -I$(LINUX_HDR_PATH) -Iinclude -I$(<D) # After inclusion, $(OUTPUT) is defined and # $(TEST_GEN_PROGS) starts with $(OUTPUT)/ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH] selftests/intel_pstate: Enhance table printing

by Daniel Díaz

Using coreutils' pr, a nicer table is printed out with the results. Signed-off-by: Daniel Díaz <daniel.diaz(a)linaro.org> --- tools/testing/selftests/intel_pstate/run.sh | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/intel_pstate/run.sh b/tools/testing/selftests/intel_pstate/run.sh index bde31a0..a40068b 100755 --- a/tools/testing/selftests/intel_pstate/run.sh +++ b/tools/testing/selftests/intel_pstate/run.sh @@ -92,18 +92,28 @@ done [ $EVALUATE_ONLY -eq 0 ] && cpupower frequency-set -g powersave --max=${max_freq}MHz >& /dev/null -echo "==============================================================================" +echo "========================================================================" echo "The marketing frequency of the cpu is $mkt_freq MHz" echo "The maximum frequency of the cpu is $max_freq MHz" echo "The minimum frequency of the cpu is $min_freq MHz" # make a pretty table -echo "Target Actual Difference MSR(0x199) max_perf_pct" +echo "Target Actual Difference MSR(0x199) max_perf_pct" | tr " " "\n" > /tmp/result.tab for freq in `seq $max_freq -100 $min_freq` do result_freq=$(cat /tmp/result.${freq} | grep "cpu MHz" | awk ' { print $4 } ' | awk -F "." ' { print $1 } ') msr=$(cat /tmp/result.${freq} | grep "msr" | awk ' { print $3 } ') max_perf_pct=$(cat /tmp/result.${freq} | grep "max_perf_pct" | awk ' { print $2 } ' ) - echo " $freq $result_freq $(($result_freq-$freq)) $msr $(($max_perf_pct*$max_freq))" + cat >> /tmp/result.tab << EOF +$freq +$result_freq +$((result_freq - freq)) +$msr +$((max_perf_pct * max_freq)) +EOF done + +# print the table +pr -aTt -5 < /tmp/result.tab + exit 0 -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

1
0
0 0

[PATCH v2] Add livepatch kselftests

by Joe Lawrence

Round two cleans up a few misc script and build items, adds a shadow variable test, and reduces the total livepatch kselftest runtime to ~45 seconds. The tests run on top of Petr's v11 atomic replace feature and v2 of the shadow variable enhancement patchsets: [PATCH 0/8] livepatch: Atomic replace feature https://lkml.kernel.org/r/20180323120028.31451-1-pmladek@suse.com [PATCH v2 0/2] livepatch: Allocate and free shadow variables more safely https://lkml.kernel.org/r/20180405122315.29065-1-pmladek@suse.com Questions for v3: - Should we split off the atomic replace and shadow variable update tests so that the this patchset could be merged before the ones listed above? - I didn't remove any of the sample modules. If anyone thinks any of them should go, let me know. They serve as nice, simple examples so I thought they should all stay. - Module naming convention: to make the test script easier to grep module names and filenames, I broke with livepatch convention and used underscores instead of dashes. I didn't think it worth the regex foo to flip back and forth in the test script. - More tests from Libor and Nicolai would be welcome! -- Maybe we separate quicktests (like these) from longer tests if needed? Here's a sample output from a successful test run: % time make -C tools/testing/selftests TARGETS=livepatch run_tests make: Entering directory `/root/linux/tools/testing/selftests' make[1]: Entering directory `/root/linux/tools/testing/selftests/livepatch' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/root/linux/tools/testing/selftests/livepatch' make[1]: Entering directory `/root/linux/tools/testing/selftests/livepatch' TAP version 13 selftests: test-livepatch.sh ======================================== TEST: basic function patching ... ok TEST: multiple livepatches ... ok TEST: atomic replace livepatch ... ok ok 1..1 selftests: test-livepatch.sh [PASS] selftests: test-callbacks.sh ======================================== TEST: target module before livepatch ... ok TEST: module_coming notifier ... ok TEST: module_going notifier ... ok TEST: module_coming and module_going notifiers ... ok TEST: target module not present ... ok TEST: pre-patch callback -ENODEV ... ok TEST: module_coming + pre-patch callback -ENODEV ... ok TEST: multiple target modules ... ok TEST: busy target module ... ok TEST: multiple livepatches ... ok TEST: atomic replace ... ok ok 1..2 selftests: test-callbacks.sh [PASS] selftests: test-shadow-vars.sh ======================================== TEST: basic shadow variable API ... ok ok 1..3 selftests: test-shadow-vars.sh [PASS] make[1]: Leaving directory `/root/linux/tools/testing/selftests/livepatch' make: Leaving directory `/root/linux/tools/testing/selftests' real 0m46.166s user 0m0.436s sys 0m1.244s changes from v1: - Only add $(CC_FLAGS_FTRACE) for target modules - Remove between test delay - Reduce RETRY_INTERVAL to .1 sec - Reduce test_callback_mod's busymod_work_func delay from 60 to 10 sec - s/PASS/ok and s/FAIL/not ok for test output - Move test descriptions from Documentation/livepatch/callbacks.txt into tools/testing/selftests/livepatch/test-callbacks.sh - Add a shadow variable test script and module - Add a short tools/testing/selftests/livepatch/README - to += linux-kselftest(a)vger.kernel.org - cc += Libor, Nicolai, Artem change from rfc: - SPDX-License-Identifiers - Moved livepatch test modules into lib/livepatch - Renamed livepatch.sh (filename suffix) - Reduced between-test delay time - Split off common functions.sh file - Split into separate livepatch, callbacks, and shadow-vars scrips - Gave the tests short descriptions instead of TEST1, TEST2, etc. Joe Lawrence (1): selftests/livepatch: introduce tests Documentation/livepatch/callbacks.txt | 487 ----------------- lib/Kconfig.debug | 12 + lib/Makefile | 2 + lib/livepatch/Makefile | 15 + lib/livepatch/test_klp_atomic_replace.c | 69 +++ lib/livepatch/test_klp_callbacks_busy.c | 43 ++ lib/livepatch/test_klp_callbacks_demo.c | 132 +++++ lib/livepatch/test_klp_callbacks_demo2.c | 104 ++++ lib/livepatch/test_klp_callbacks_mod.c | 24 + lib/livepatch/test_klp_livepatch.c | 62 +++ lib/livepatch/test_klp_shadow_vars.c | 235 ++++++++ tools/testing/selftests/Makefile | 1 + tools/testing/selftests/livepatch/Makefile | 8 + tools/testing/selftests/livepatch/config | 1 + tools/testing/selftests/livepatch/functions.sh | 196 +++++++ .../testing/selftests/livepatch/test-callbacks.sh | 607 +++++++++++++++++++++ .../testing/selftests/livepatch/test-livepatch.sh | 173 ++++++ .../selftests/livepatch/test-shadow-vars.sh | 60 ++ 18 files changed, 1744 insertions(+), 487 deletions(-) create mode 100644 lib/livepatch/Makefile create mode 100644 lib/livepatch/test_klp_atomic_replace.c create mode 100644 lib/livepatch/test_klp_callbacks_busy.c create mode 100644 lib/livepatch/test_klp_callbacks_demo.c create mode 100644 lib/livepatch/test_klp_callbacks_demo2.c create mode 100644 lib/livepatch/test_klp_callbacks_mod.c create mode 100644 lib/livepatch/test_klp_livepatch.c create mode 100644 lib/livepatch/test_klp_shadow_vars.c create mode 100644 tools/testing/selftests/livepatch/Makefile create mode 100644 tools/testing/selftests/livepatch/config create mode 100644 tools/testing/selftests/livepatch/functions.sh create mode 100755 tools/testing/selftests/livepatch/test-callbacks.sh create mode 100755 tools/testing/selftests/livepatch/test-livepatch.sh create mode 100755 tools/testing/selftests/livepatch/test-shadow-vars.sh -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

4
7
0 0

[PATCH] selftests/filesystems: Don't run dnotify_test by default

by Michael Ellerman

In commit ce290a19609d ("selftests: add devpts selftests"), the filesystems directory was added to the top-level selftests Makefile. That had the effect of causing the existing dnotify_test in the filesystems directory to now be run as part of the default selftests test-run. Unfortunately dnotify_test is actually an infinite loop. Fix it by moving dnotify_test to TEST_GEN_PROGS_EXTENDED, which says that it's a generated file (ie. built) but should not be run as part of the default test suite run (it's an "extendend" test). While we're here cleanup a few other things, devpts_pts should be in TEST_GEN_PROGS to indicate that it's built, and with the above two changes we no longer need a custom all or clean rule. Fixes: ce290a19609d ("selftests: add devpts selftests") Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> --- tools/testing/selftests/filesystems/Makefile | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile index 4e6d09fb166f..5c7d7001ad37 100644 --- a/tools/testing/selftests/filesystems/Makefile +++ b/tools/testing/selftests/filesystems/Makefile @@ -1,8 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -TEST_PROGS := dnotify_test devpts_pts -all: $(TEST_PROGS) -include ../lib.mk +TEST_GEN_PROGS := devpts_pts +TEST_GEN_PROGS_EXTENDED := dnotify_test -clean: - rm -fr $(TEST_PROGS) +include ../lib.mk -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

3
3
0 0

[PATCH] selftests: bpf: update .gitignore with missing generated files

by Anders Roxell

Signed-off-by: Anders Roxell <anders.roxell(a)linaro.org> --- tools/testing/selftests/bpf/.gitignore | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index 9cf83f895d98..5e1ab2f0eb79 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -12,3 +12,6 @@ test_tcpbpf_user test_verifier_log feature test_libbpf_open +test_sock +test_sock_addr +urandom_read -- 2.16.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH][next] kvm: selftests: fix spelling mistake: "divisable" and "divisible"

by Colin King

From: Colin Ian King <colin.king(a)canonical.com> Trivial fix to spelling mistakes in comment and message text Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- tools/testing/selftests/kvm/lib/kvm_util.c | 2 +- tools/testing/selftests/kvm/lib/sparsebit.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 7ca1bb40c498..e213d513dc61 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -1435,7 +1435,7 @@ vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, sparsebit_idx_t pg; TEST_ASSERT((paddr_min % vm->page_size) == 0, "Min physical address " - "not divisable by page size.\n" + "not divisible by page size.\n" " paddr_min: 0x%lx page_size: 0x%x", paddr_min, vm->page_size); diff --git a/tools/testing/selftests/kvm/lib/sparsebit.c b/tools/testing/selftests/kvm/lib/sparsebit.c index 0c5cf3e0cb6f..b132bc95d183 100644 --- a/tools/testing/selftests/kvm/lib/sparsebit.c +++ b/tools/testing/selftests/kvm/lib/sparsebit.c @@ -121,7 +121,7 @@ * avoided by moving the setting of the nodes mask bits into * the previous nodes num_after setting. * - * + Node starting index is evenly divisable by the number of bits + * + Node starting index is evenly divisible by the number of bits * within a nodes mask member. * * + Nodes never represent a range of bits that wrap around the @@ -1741,7 +1741,7 @@ void sparsebit_validate_internal(struct sparsebit *s) /* Validate node index is divisible by the mask size */ if (nodep->idx % MASK_BITS) { - fprintf(stderr, "Node index not divisable by " + fprintf(stderr, "Node index not divisible by " "mask size,\n" " nodep: %p nodep->idx: 0x%lx " "MASK_BITS: %lu\n", -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH v2] Add udmabuf misc device

by Gerd Hoffmann

A driver to let userspace turn iovecs into dma-bufs. Use case: Allows qemu create dmabufs for the vga framebuffer or virtio-gpu ressources. Then they can be passed around to display those guest things on the host. To spice client for classic full framebuffer display, and hopefully some day to wayland server for seamless guest window display. Those dma-bufs are accounted against user's shm mlock bucket as the pages are effectively locked in memory. Cc: David Airlie <airlied(a)linux.ie> Cc: Tomeu Vizoso <tomeu.vizoso(a)collabora.com> Cc: Daniel Vetter <daniel(a)ffwll.ch> Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> --- include/uapi/linux/udmabuf.h | 23 ++ drivers/dma-buf/udmabuf.c | 261 ++++++++++++++++++++++ tools/testing/selftests/drivers/dma-buf/udmabuf.c | 69 ++++++ drivers/dma-buf/Kconfig | 7 + drivers/dma-buf/Makefile | 1 + tools/testing/selftests/drivers/dma-buf/Makefile | 5 + 6 files changed, 366 insertions(+) create mode 100644 include/uapi/linux/udmabuf.h create mode 100644 drivers/dma-buf/udmabuf.c create mode 100644 tools/testing/selftests/drivers/dma-buf/udmabuf.c create mode 100644 tools/testing/selftests/drivers/dma-buf/Makefile diff --git a/include/uapi/linux/udmabuf.h b/include/uapi/linux/udmabuf.h new file mode 100644 index 0000000000..54ceba203a --- /dev/null +++ b/include/uapi/linux/udmabuf.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_LINUX_UDMABUF_H +#define _UAPI_LINUX_UDMABUF_H + +#include <linux/types.h> +#include <linux/ioctl.h> + +struct udmabuf_iovec { + __u64 base; + __u64 len; +}; + +#define UDMABUF_FLAGS_CLOEXEC 0x01 + +struct udmabuf_create { + __u32 flags; + __u32 niov; + struct udmabuf_iovec iovs[]; +}; + +#define UDMABUF_CREATE _IOW(0x42, 0x23, struct udmabuf_create) + +#endif /* _UAPI_LINUX_UDMABUF_H */ diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c new file mode 100644 index 0000000000..664ab4ee4e --- /dev/null +++ b/drivers/dma-buf/udmabuf.c @@ -0,0 +1,261 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/miscdevice.h> +#include <linux/dma-buf.h> +#include <linux/highmem.h> +#include <linux/cred.h> + +#include <uapi/linux/udmabuf.h> + +struct udmabuf { + u32 pagecount; + struct page **pages; + struct user_struct *owner; +}; + +static int udmabuf_vm_fault(struct vm_fault *vmf) +{ + struct vm_area_struct *vma = vmf->vma; + struct udmabuf *ubuf = vma->vm_private_data; + + if (WARN_ON(vmf->pgoff >= ubuf->pagecount)) + return VM_FAULT_SIGBUS; + + vmf->page = ubuf->pages[vmf->pgoff]; + get_page(vmf->page); + return 0; +} + +static const struct vm_operations_struct udmabuf_vm_ops = { + .fault = udmabuf_vm_fault, +}; + +static int mmap_udmabuf(struct dma_buf *buf, struct vm_area_struct *vma) +{ + struct udmabuf *ubuf = buf->priv; + + if ((vma->vm_flags & VM_SHARED) == 0) + return -EINVAL; + + vma->vm_ops = &udmabuf_vm_ops; + vma->vm_private_data = ubuf; + return 0; +} + +static struct sg_table *map_udmabuf(struct dma_buf_attachment *at, + enum dma_data_direction direction) +{ + struct udmabuf *ubuf = at->dmabuf->priv; + struct sg_table *sg; + + sg = kzalloc(sizeof(*sg), GFP_KERNEL); + if (!sg) + goto err1; + if (sg_alloc_table_from_pages(sg, ubuf->pages, ubuf->pagecount, + 0, ubuf->pagecount << PAGE_SHIFT, + GFP_KERNEL) < 0) + goto err2; + if (!dma_map_sg(at->dev, sg->sgl, sg->nents, direction)) + goto err3; + + return sg; + +err3: + sg_free_table(sg); +err2: + kfree(sg); +err1: + return ERR_PTR(-ENOMEM); +} + +static void unmap_udmabuf(struct dma_buf_attachment *at, + struct sg_table *sg, + enum dma_data_direction direction) +{ + sg_free_table(sg); + kfree(sg); +} + +static void release_udmabuf(struct dma_buf *buf) +{ + struct udmabuf *ubuf = buf->priv; + pgoff_t pg; + + for (pg = 0; pg < ubuf->pagecount; pg++) + put_page(ubuf->pages[pg]); + user_shm_unlock(ubuf->pagecount << PAGE_SHIFT, ubuf->owner); + free_uid(ubuf->owner); + kfree(ubuf->pages); + kfree(ubuf); +} + +static void *kmap_atomic_udmabuf(struct dma_buf *buf, unsigned long page_num) +{ + struct udmabuf *ubuf = buf->priv; + struct page *page = ubuf->pages[page_num]; + + return kmap_atomic(page); +} + +static void *kmap_udmabuf(struct dma_buf *buf, unsigned long page_num) +{ + struct udmabuf *ubuf = buf->priv; + struct page *page = ubuf->pages[page_num]; + + return kmap(page); +} + +static struct dma_buf_ops udmabuf_ops = { + .map_dma_buf = map_udmabuf, + .unmap_dma_buf = unmap_udmabuf, + .release = release_udmabuf, + .map_atomic = kmap_atomic_udmabuf, + .map = kmap_udmabuf, + .mmap = mmap_udmabuf, +}; + +static long udmabuf_ioctl_create(struct file *filp, unsigned long arg) +{ + struct udmabuf_create create; + struct udmabuf_iovec *iovs; + struct udmabuf *ubuf; + DEFINE_DMA_BUF_EXPORT_INFO(exp_info); + struct dma_buf *buf; + pgoff_t pgoff, pgcnt; + u32 iov, flags; + int ret; + + if (copy_from_user(&create, (void __user *)arg, + sizeof(struct udmabuf_create))) + return -EFAULT; + + iovs = kmalloc_array(create.niov, sizeof(struct udmabuf_iovec), + GFP_KERNEL); + if (!iovs) + return -ENOMEM; + + arg += offsetof(struct udmabuf_create, iovs); + ret = -EFAULT; + if (copy_from_user(iovs, (void __user *)arg, + create.niov * sizeof(struct udmabuf_iovec))) + goto err_free_iovs; + + ubuf = kzalloc(sizeof(struct udmabuf), GFP_KERNEL); + if (!ubuf) + goto err_free_iovs; + + ret = -EINVAL; + for (iov = 0; iov < create.niov; iov++) { + if (!IS_ALIGNED(iovs[iov].base, PAGE_SIZE)) + goto err_free_buf; + if (!IS_ALIGNED(iovs[iov].len, PAGE_SIZE)) + goto err_free_buf; + ubuf->pagecount += iovs[iov].len >> PAGE_SHIFT; + } + + /* this effectively mlocks the pages so account it accordingly */ + ret = -ENOMEM; + ubuf->owner = current_user(); + if (!user_shm_lock(ubuf->pagecount << PAGE_SHIFT, ubuf->owner)) + goto err_free_buf; + + ubuf->pages = kmalloc_array(ubuf->pagecount, sizeof(struct page*), + GFP_KERNEL); + if (!ubuf->pages) + goto err_shm_unlock; + + pgoff = 0; + for (iov = 0; iov < create.niov; iov++) { + pgcnt = iovs[iov].len >> PAGE_SHIFT; + while (pgcnt > 0) { + ret = get_user_pages_fast(iovs[iov].base, pgcnt, + true, /* write */ + ubuf->pages + pgoff); + if (ret < 0) + goto err_put_pages; + pgoff += ret; + pgcnt -= ret; + } + } + + exp_info.ops = &udmabuf_ops; + exp_info.size = ubuf->pagecount << PAGE_SHIFT; + exp_info.priv = ubuf; + + buf = dma_buf_export(&exp_info); + if (IS_ERR(buf)) { + ret = PTR_ERR(buf); + goto err_put_pages; + } + + flags = 0; + if (create.flags & UDMABUF_FLAGS_CLOEXEC) + flags |= O_CLOEXEC; + + kfree(iovs); + return dma_buf_fd(buf, flags); + +err_put_pages: + while (pgoff > 0) + put_page(ubuf->pages[--pgoff]); +err_shm_unlock: + user_shm_unlock(ubuf->pagecount << PAGE_SHIFT, ubuf->owner); +err_free_buf: + free_uid(ubuf->owner); + kfree(ubuf->pages); + kfree(ubuf); +err_free_iovs: + kfree(iovs); + return ret; +} + +static long udmabuf_ioctl(struct file *filp, unsigned int ioctl, + unsigned long arg) +{ + long ret; + + switch (ioctl) { + case UDMABUF_CREATE: + ret = udmabuf_ioctl_create(filp, arg); + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + +static const struct file_operations udmabuf_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = udmabuf_ioctl, +}; + +static struct miscdevice udmabuf_misc = { + .minor = MISC_DYNAMIC_MINOR, + .name = "udmabuf", + .fops = &udmabuf_fops, +}; + +static int __init udmabuf_dev_init(void) +{ + return misc_register(&udmabuf_misc); +} + +static void __exit udmabuf_dev_exit(void) +{ + misc_deregister(&udmabuf_misc); +} + +module_init(udmabuf_dev_init) +module_exit(udmabuf_dev_exit) + +MODULE_AUTHOR("Gerd Hoffmann <kraxel(a)redhat.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/tools/testing/selftests/drivers/dma-buf/udmabuf.c b/tools/testing/selftests/drivers/dma-buf/udmabuf.c new file mode 100644 index 0000000000..3472c8ee49 --- /dev/null +++ b/tools/testing/selftests/drivers/dma-buf/udmabuf.c @@ -0,0 +1,69 @@ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <malloc.h> + +#include <sys/ioctl.h> +#include <linux/udmabuf.h> + +#define TEST_PREFIX "drivers/dma-buf/udmabuf" +#define NUM_PAGES 4 + +int main(int argc, char *argv[]) +{ + struct udmabuf_create *create; + void *mem; + int dev, fd; + + dev = open("/dev/udmabuf", O_RDWR); + if (dev < 0) { + printf("%s: [skip]\n", TEST_PREFIX); + exit(77); + } + + mem = memalign(getpagesize(), getpagesize() * NUM_PAGES); + if (mem == NULL) { + printf("%s: [FAIL]\n", TEST_PREFIX); + exit (1); + } + + create = malloc(sizeof(struct udmabuf_create) + + sizeof(struct udmabuf_iovec)); + create->flags = 0; + create->niov = 1; + + /* should fail (base not page aligned) */ + create->iovs[0].base = (intptr_t)mem + getpagesize()/2; + create->iovs[0].len = getpagesize(); + fd = ioctl(dev, UDMABUF_CREATE, create); + if (fd >= 0) { + printf("%s: [FAIL]\n", TEST_PREFIX); + exit(1); + } + + /* should fail (size not multiple of page) */ + create->iovs[0].base = (intptr_t)mem; + create->iovs[0].len = getpagesize()/2; + fd = ioctl(dev, UDMABUF_CREATE, create); + if (fd >= 0) { + printf("%s: [FAIL]\n", TEST_PREFIX); + exit(1); + } + + /* should work */ + create->iovs[0].base = (intptr_t)mem; + create->iovs[0].len = getpagesize() * NUM_PAGES; + fd = ioctl(dev, UDMABUF_CREATE, create); + if (fd < 0) { + printf("%s: [FAIL]\n", TEST_PREFIX); + exit(1); + } + close(fd); + + fprintf(stderr, "%s: ok\n", TEST_PREFIX); + close(dev); + return 0; +} diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index ed3b785bae..19be3ec62d 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -30,4 +30,11 @@ config SW_SYNC WARNING: improper use of this can result in deadlocking kernel drivers from userspace. Intended for test and debug only. +config UDMABUF + bool "userspace dmabuf misc driver" + default n + depends on DMA_SHARED_BUFFER + ---help--- + A driver to let userspace turn iovs into dma-bufs. + endmenu diff --git a/drivers/dma-buf/Makefile b/drivers/dma-buf/Makefile index c33bf88631..0913a6ccab 100644 --- a/drivers/dma-buf/Makefile +++ b/drivers/dma-buf/Makefile @@ -1,3 +1,4 @@ obj-y := dma-buf.o dma-fence.o dma-fence-array.o reservation.o seqno-fence.o obj-$(CONFIG_SYNC_FILE) += sync_file.o obj-$(CONFIG_SW_SYNC) += sw_sync.o sync_debug.o +obj-$(CONFIG_UDMABUF) += udmabuf.o diff --git a/tools/testing/selftests/drivers/dma-buf/Makefile b/tools/testing/selftests/drivers/dma-buf/Makefile new file mode 100644 index 0000000000..4154c3d7aa --- /dev/null +++ b/tools/testing/selftests/drivers/dma-buf/Makefile @@ -0,0 +1,5 @@ +CFLAGS += -I../../../../../usr/include/ + +TEST_GEN_PROGS := udmabuf + +include ../../lib.mk -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

5
6
0 0

[PATCH] selftests/android/ion: fix heap_type may be uninitialized

by Anders Roxell

gcc warns that 'heap_type' is not initialized if we don't come through any of the two 'case' statesments before: ionapp_export.c:91:2: warning: ‘heap_type’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("heap_type: %ld, heap_size: %ld\n", heap_type, heap_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In the current code, we initialize the heap_type to -1 before the 'case' statements. We also change the print_usage function to state that heap_type and heap_size isn't optional, they are mandatory. Fixes: 47a18c42d992 ("android/ion: userspace test utility for ion buffer sharing") Signed-off-by: Anders Roxell <anders.roxell(a)linaro.org> --- .../testing/selftests/android/ion/ionapp_export.c | 23 +++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/android/ion/ionapp_export.c b/tools/testing/selftests/android/ion/ionapp_export.c index a944e72621a9..b42f803e9d2a 100644 --- a/tools/testing/selftests/android/ion/ionapp_export.c +++ b/tools/testing/selftests/android/ion/ionapp_export.c @@ -31,16 +31,24 @@ void print_usage(int argc, char *argv[]) { - printf("Usage: %s [-h <help>] [-i <heap id>] [-s <size in bytes>]\n", + printf("Usage: %s [-h <help>] -i <heap id> -s <size in bytes>\n", argv[0]); } +void heap_type_error_text(void) +{ + printf("heap_type must be specified\n"); + printf(" need to specify -i <heap_type>\n"); + printf(" supported heap types 0 or 1\n"); +} + int main(int argc, char *argv[]) { int opt, ret, status, heapid; int sockfd, client_fd, shared_fd; unsigned char *map_buf; - unsigned long map_len, heap_type, heap_size, flags; + unsigned long map_len, heap_size, flags; + long heap_type; struct ion_buffer_info info; struct socket_info skinfo; @@ -50,6 +58,7 @@ int main(int argc, char *argv[]) } heap_size = 0; + heap_type = -1; flags = 0; while ((opt = getopt(argc, argv, "hi:s:")) != -1) { @@ -68,7 +77,8 @@ int main(int argc, char *argv[]) heap_type = ION_HEAP_TYPE_SYSTEM_CONTIG; break; default: - printf("ERROR: heap type not supported\n"); + heap_type_error_text(); + print_usage(argc, argv); exit(1); } break; @@ -82,8 +92,15 @@ int main(int argc, char *argv[]) } } + if (heap_type < 0) { + heap_type_error_text(); + print_usage(argc, argv); + exit(1); + } + if (heap_size <= 0) { printf("heap_size cannot be 0\n"); + printf(" need to specify -s <heap_size>\n"); print_usage(argc, argv); exit(1); } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

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