December 2017 - Linux-kselftest-mirror

[Linux-kselftest-mirror] [PATCH] posix-timers: prevent UB from shifting negative signed value

by Nick Desaulniers

Shifting a negative signed number is undefined behavior. Looking at the macros MAKE_PROCESS_CPUCLOCK and FD_TO_CLOCKID, it seems that the subexpression: (~(clockid_t) (pid) << 3) where clockid_t resolves to a signed int, which once negated, is undefined behavior to shift the value of if the results thus far are negative. It was further suggested to make these macros into inline functions. Suggested-by: Thomas Gleixner <tglx(a)linutronix.de> Signed-off-by: Nick Desaulniers <nick.desaulniers(a)gmail.com> --- include/linux/posix-timers.h | 25 +++++++++++++++++++------ kernel/time/posix-clock.c | 2 +- kernel/time/posix-cpu-timers.c | 4 ++-- tools/testing/selftests/ptp/testptp.c | 4 +--- 4 files changed, 23 insertions(+), 12 deletions(-) diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 672c4f3..b3d87c0 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -42,13 +42,26 @@ struct cpu_timer_list { #define CLOCKFD CPUCLOCK_MAX #define CLOCKFD_MASK (CPUCLOCK_PERTHREAD_MASK|CPUCLOCK_CLOCK_MASK) -#define MAKE_PROCESS_CPUCLOCK(pid, clock) \ - ((~(clockid_t) (pid) << 3) | (clockid_t) (clock)) -#define MAKE_THREAD_CPUCLOCK(tid, clock) \ - MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK) +static inline clockid_t make_process_cpuclock(const unsigned int pid, + const clockid_t clock) +{ + return ((~pid) << 3) | clock; +} +static inline clockid_t make_thread_cpuclock(const unsigned int tid, + const clockid_t clock) +{ + return make_process_cpuclock(tid, clock | CPUCLOCK_PERTHREAD_MASK); +} -#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) -#define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3)) +inline int fd_to_clockid(const int fd) +{ + return (int) make_process_cpuclock((unsigned int) fd, CLOCKFD); +} + +inline int clockid_to_fd(const clockid_t clk) +{ + return ~(clk >> 3); +} #define REQUEUE_PENDING 1 diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index 17cdc55..cc91d90 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -216,7 +216,7 @@ struct posix_clock_desc { static int get_clock_desc(const clockid_t id, struct posix_clock_desc *cd) { - struct file *fp = fget(CLOCKID_TO_FD(id)); + struct file *fp = fget(clockid_to_fd(id)); int err = -EINVAL; if (!fp) diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 1f27887a..cef79ca 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -1363,8 +1363,8 @@ static long posix_cpu_nsleep_restart(struct restart_block *restart_block) return do_cpu_nanosleep(which_clock, TIMER_ABSTIME, &t); } -#define PROCESS_CLOCK MAKE_PROCESS_CPUCLOCK(0, CPUCLOCK_SCHED) -#define THREAD_CLOCK MAKE_THREAD_CPUCLOCK(0, CPUCLOCK_SCHED) +#define PROCESS_CLOCK make_process_cpuclock(0, CPUCLOCK_SCHED) +#define THREAD_CLOCK make_thread_cpuclock(0, CPUCLOCK_SCHED) static int process_cpu_clock_getres(const clockid_t which_clock, struct timespec64 *tp) diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c index 5d2eae1..a5d8f0a 100644 --- a/tools/testing/selftests/ptp/testptp.c +++ b/tools/testing/selftests/ptp/testptp.c @@ -60,9 +60,7 @@ static int clock_adjtime(clockid_t id, struct timex *tx) static clockid_t get_clockid(int fd) { #define CLOCKFD 3 -#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) - - return FD_TO_CLOCKID(fd); + return (((unsigned int) ~fd) << 3) | CLOCKFD; } static void handle_alarm(int s) -- 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, 11 months

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[Linux-kselftest-mirror] procfs/sysfs test plan

by Tri Vo

Hello, Android kernel team is planning to develop procfs and sysfs tests and contribute them to linux-kselftest project. The plan for sysfs tests right now, as suggested by Greg KH, is to write a minimal "generic" test framework that allows you to easily specify: - file location - expected value type (integer, string, range of values, etc.) - expected permissions Could/should this approach be extended to test procfs and other virtual filesystems? We would really appreciate some input on the test plan. :) Thanks, Tri Vo -- 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, 12 months

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[Linux-kselftest-mirror] [RFC PATCH for 4.16 11/11] membarrier: selftest: Test private expedited sync core cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index bb9c58072c5c..d9ab8b6ee52e 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,63 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_private_expedited_sync_core_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier_register_shared_expedited_success(void) { int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; @@ -188,6 +245,22 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + status = sys_membarrier(MEMBARRIER_CMD_QUERY, 0); + if (status < 0) { + ksft_test_result_fail("sys_membarrier() failed\n"); + return status; + } + if (status & MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE) { + status = test_membarrier_private_expedited_sync_core_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_sync_core_success(); + if (status) + return status; + status = test_membarrier_private_expedited_sync_core_success(); + if (status) + return status; + } /* * It is valid to send a shared membarrier from a non-registered * process. -- 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, 12 months

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[Linux-kselftest-mirror] [RFC PATCH for 4.16 06/11] membarrier: selftest: Test shared expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 51 +++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index e6ee73d01fa1..bb9c58072c5c 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,40 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_register_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -154,6 +188,19 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + /* + * It is valid to send a shared membarrier from a non-registered + * process. + */ + status = test_membarrier_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_register_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_shared_expedited_success(); + if (status) + return status; return 0; } @@ -173,8 +220,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 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, 12 months

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[Linux-kselftest-mirror] [RFC PATCH for 4.16 02/11] membarrier: selftest: Test private expedited cmd (v2)

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED commands. Add checks expecting specific error values on system calls expected to fail. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- Changes since v1: - return result of ksft_exit_pass from main(), silencing compiler warning about missing return value. --- .../testing/selftests/membarrier/membarrier_test.c | 111 ++++++++++++++++++--- 1 file changed, 95 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index 9e674d9514d1..e6ee73d01fa1 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -16,49 +16,119 @@ static int sys_membarrier(int cmd, int flags) static int test_membarrier_cmd_fail(void) { int cmd = -1, flags = 0; + const char *test_name = "sys membarrier invalid command"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier invalid command test: command = %d, flags = %d. Should fail, but passed\n", - cmd, flags); + "%s test: command = %d, flags = %d. Should fail, but passed\n", + test_name, cmd, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier invalid command test: command = %d, flags = %d. Failed as expected\n", - cmd, flags); + "%s test: command = %d, flags = %d, errno = %d. Failed as expected\n", + test_name, cmd, flags, errno); return 0; } static int test_membarrier_flags_fail(void) { int cmd = MEMBARRIER_CMD_QUERY, flags = 1; + const char *test_name = "sys membarrier MEMBARRIER_CMD_QUERY invalid flags"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Should fail, but passed\n", - flags); + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Failed as expected\n", - flags); + "%s test: flags = %d, errno = %d. Failed as expected\n", + test_name, flags, errno); return 0; } -static int test_membarrier_success(void) +static int test_membarrier_shared_success(void) { int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED\n"; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); return 0; } @@ -72,7 +142,16 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_success(); + status = test_membarrier_shared_success(); + if (status) + return status; + status = test_membarrier_private_expedited_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_success(); + if (status) + return status; + status = test_membarrier_private_expedited_success(); if (status) return status; return 0; @@ -108,5 +187,5 @@ int main(int argc, char **argv) test_membarrier_query(); test_membarrier(); - ksft_exit_pass(); + return ksft_exit_pass(); } -- 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, 12 months

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Re: [Linux-kselftest-mirror] [PATCH v9 29/51] mm/mprotect, powerpc/mm/pkeys, x86/mm/pkeys: Add sysfs interface

by Dave Hansen

On 11/06/2017 12:57 AM, Ram Pai wrote: > Expose useful information for programs using memory protection keys. > Provide implementation for powerpc and x86. > > On a powerpc system with pkeys support, here is what is shown: > > $ head /sys/kernel/mm/protection_keys/* > ==> /sys/kernel/mm/protection_keys/disable_access_supported <== > true This is cute, but I don't think it should be part of the ABI. Put it in debugfs if you want it for cute tests. The stuff that this tells you can and should come from pkey_alloc() for the ABI. http://man7.org/linux/man-pages/man7/pkeys.7.html > Any application wanting to use protection keys needs to be able to > function without them. They might be unavailable because the > hardware that the application runs on does not support them, the > kernel code does not contain support, the kernel support has been > disabled, or because the keys have all been allocated, perhaps by a > library the application is using. It is recommended that > applications wanting to use protection keys should simply call > pkey_alloc(2) and test whether the call succeeds, instead of > attempting to detect support for the feature in any other way. Do you really not have standard way on ppc to say whether hardware features are supported by the kernel? For instance, how do you know if a given set of registers are known to and are being context-switched by the kernel? -- 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

7 years

5
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[Linux-kselftest-mirror] Linux kernel build bots GCC version

by Kaushal Butala

Hi, I am trying to find out which GCC version is used for building the daily kernel code base by the build bots specifically for amd64 and x86 architecture so that I can use the same GCC version myself. Can someone please point me as to where can I find this information? Best Regards, Kaushal -- 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

7 years

2
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[Linux-kselftest-mirror] [PATCH] selftests: pstore: Adding config fragment CONFIG_PSTORE_RAM=m

by Naresh Kamboju

pstore_tests and pstore_post_reboot_tests need CONFIG_PSTORE_RAM=m Signed-off-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> --- tools/testing/selftests/pstore/config | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/pstore/config b/tools/testing/selftests/pstore/config index 6a8e5a9..d148f9f 100644 --- a/tools/testing/selftests/pstore/config +++ b/tools/testing/selftests/pstore/config @@ -2,3 +2,4 @@ CONFIG_MISC_FILESYSTEMS=y CONFIG_PSTORE=y CONFIG_PSTORE_PMSG=y CONFIG_PSTORE_CONSOLE=y +CONFIG_PSTORE_RAM=m -- 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

7 years

1
0
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[Linux-kselftest-mirror] [PATCH] selftests/bpf: remove the DEBUG macro for test_dev_cgroup

by Chen Rong

The test may fail if not enable DEBUG macro in dev_cgroup.c # ./test_dev_cgroup libbpf: load bpf program failed: Operation not permitted libbpf: failed to load program 'cgroup/dev' libbpf: failed to load object './dev_cgroup.o' Failed to load DEV_CGROUP program Removing the DEBUG macro makes the test always pass. Signed-off-by: Chen Rong <chenr.fnst(a)cn.fujitsu.com> --- tools/testing/selftests/bpf/dev_cgroup.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/selftests/bpf/dev_cgroup.c b/tools/testing/selftests/bpf/dev_cgroup.c index ce41a34..a167c6d 100644 --- a/tools/testing/selftests/bpf/dev_cgroup.c +++ b/tools/testing/selftests/bpf/dev_cgroup.c @@ -13,7 +13,6 @@ SEC("cgroup/dev") int bpf_prog1(struct bpf_cgroup_dev_ctx *ctx) { short type = ctx->access_type & 0xFFFF; -#ifdef DEBUG short access = ctx->access_type >> 16; char fmt[] = " %d:%d \n"; @@ -39,7 +38,6 @@ int bpf_prog1(struct bpf_cgroup_dev_ctx *ctx) fmt[10] = 'm'; bpf_trace_printk(fmt, sizeof(fmt), ctx->major, ctx->minor); -#endif /* Allow access to /dev/zero and /dev/random. * Forbid everything else. -- 2.5.0 -- 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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[Linux-kselftest-mirror] [RFC PATCH for 4.16 21/21] rseq: selftests: Provide Makefile, scripts, gitignore

by Mathieu Desnoyers

A run_param_test.sh script runs many variants of the parametrizable tests. Wire up the rseq Makefile, add directory entry into MAINTAINERS file. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: 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 --- MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/rseq/.gitignore | 7 ++ tools/testing/selftests/rseq/Makefile | 37 +++++++ tools/testing/selftests/rseq/run_param_test.sh | 130 +++++++++++++++++++++++++ 5 files changed, 176 insertions(+) create mode 100644 tools/testing/selftests/rseq/.gitignore create mode 100644 tools/testing/selftests/rseq/Makefile create mode 100755 tools/testing/selftests/rseq/run_param_test.sh diff --git a/MAINTAINERS b/MAINTAINERS index dce21dea5a63..64422f253aa9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11638,6 +11638,7 @@ S: Supported F: kernel/rseq.c F: include/uapi/linux/rseq.h F: include/trace/events/rseq.h +F: tools/testing/selftests/rseq/ RFKILL M: Johannes Berg <johannes(a)sipsolutions.net> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index fc1eba0e0130..fc314334628a 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -26,6 +26,7 @@ TARGETS += nsfs TARGETS += powerpc TARGETS += pstore TARGETS += ptrace +TARGETS += rseq TARGETS += seccomp TARGETS += sigaltstack TARGETS += size diff --git a/tools/testing/selftests/rseq/.gitignore b/tools/testing/selftests/rseq/.gitignore new file mode 100644 index 000000000000..73dcf05b69fd --- /dev/null +++ b/tools/testing/selftests/rseq/.gitignore @@ -0,0 +1,7 @@ +basic_percpu_ops_test +basic_test +basic_rseq_op_test +param_test +param_test_benchmark +param_test_compare_twice +param_test_skip_fastpath diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile new file mode 100644 index 000000000000..69f90d718774 --- /dev/null +++ b/tools/testing/selftests/rseq/Makefile @@ -0,0 +1,37 @@ +CFLAGS += -O2 -Wall -g -I./ -I../cpu-opv/ -I../../../../usr/include/ -L./ -Wl,-rpath=./ +LDLIBS += -lpthread + +# 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_test basic_percpu_ops_test \ + param_test param_test_skip_fastpath \ + param_test_benchmark param_test_compare_twice + +TEST_GEN_PROGS_EXTENDED = librseq.so libcpu-op.so + +TEST_PROGS = run_param_test.sh + +include ../lib.mk + +$(OUTPUT)/librseq.so: rseq.c rseq.h rseq-*.h + $(CC) $(CFLAGS) -shared -fPIC $< $(LDLIBS) -o $@ + +$(OUTPUT)/libcpu-op.so: ../cpu-opv/cpu-op.c ../cpu-opv/cpu-op.h + $(CC) $(CFLAGS) -shared -fPIC $< $(LDLIBS) -o $@ + +$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h ../cpu-opv/cpu-op.h percpu-op.h + $(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -lcpu-op -o $@ + +$(OUTPUT)/param_test_skip_fastpath: param_test.c $(TEST_GEN_PROGS_EXTENDED) \ + rseq.h rseq-*.h ../cpu-opv/cpu-op.h percpu-op.h + $(CC) $(CFLAGS) -DRSEQ_SKIP_FASTPATH $< $(LDLIBS) -lrseq -lcpu-op -o $@ + +$(OUTPUT)/param_test_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \ + rseq.h rseq-*.h ../cpu-opv/cpu-op.h percpu-op.h + $(CC) $(CFLAGS) -DBENCHMARK $< $(LDLIBS) -lrseq -lcpu-op -o $@ + +$(OUTPUT)/param_test_compare_twice: param_test.c $(TEST_GEN_PROGS_EXTENDED) \ + rseq.h rseq-*.h ../cpu-opv/cpu-op.h percpu-op.h + $(CC) $(CFLAGS) -DRSEQ_COMPARE_TWICE $< $(LDLIBS) -lrseq -lcpu-op -o $@ diff --git a/tools/testing/selftests/rseq/run_param_test.sh b/tools/testing/selftests/rseq/run_param_test.sh new file mode 100755 index 000000000000..64d4c7d722c9 --- /dev/null +++ b/tools/testing/selftests/rseq/run_param_test.sh @@ -0,0 +1,130 @@ +#!/bin/bash + +EXTRA_ARGS=${@} + +OLDIFS="$IFS" +IFS=$'\n' +TEST_LIST=( + "-T s" + "-T l" + "-T b" + "-T b -M" + "-T m" + "-T m -M" + "-T i" +) + +TEST_NAME=( + "spinlock" + "list" + "buffer" + "buffer with barrier" + "memcpy" + "memcpy with barrier" + "increment" +) +IFS="$OLDIFS" + +REPS=1000 + +function do_tests() +{ + local i=0 + while [ "$i" -lt "${#TEST_LIST[@]}" ]; do + echo "Running test ${TEST_NAME[$i]}" + ./param_test ${TEST_LIST[$i]} -r ${REPS} ${@} ${EXTRA_ARGS} || exit 1 + echo "Running skip fast-path test ${TEST_NAME[$i]}" + ./param_test_skip_fastpath ${TEST_LIST[$i]} -r ${REPS} ${@} ${EXTRA_ARGS} || exit 1 + echo "Running compare-twice test ${TEST_NAME[$i]}" + ./param_test_compare_twice ${TEST_LIST[$i]} -r ${REPS} ${@} ${EXTRA_ARGS} || exit 1 + let "i++" + done +} + +echo "Default parameters" +do_tests + +echo "Loop injection: 10000 loops" + +OLDIFS="$IFS" +IFS=$'\n' +INJECT_LIST=( + "1" + "2" + "3" + "4" + "5" + "6" + "7" + "8" + "9" +) +IFS="$OLDIFS" + +NR_LOOPS=10000 + +i=0 +while [ "$i" -lt "${#INJECT_LIST[@]}" ]; do + echo "Injecting at <${INJECT_LIST[$i]}>" + do_tests -${INJECT_LIST[i]} ${NR_LOOPS} + let "i++" +done +NR_LOOPS= + +function inject_blocking() +{ + OLDIFS="$IFS" + IFS=$'\n' + INJECT_LIST=( + "7" + "8" + "9" + ) + IFS="$OLDIFS" + + NR_LOOPS=-1 + + i=0 + while [ "$i" -lt "${#INJECT_LIST[@]}" ]; do + echo "Injecting at <${INJECT_LIST[$i]}>" + do_tests -${INJECT_LIST[i]} -1 ${@} + let "i++" + done + NR_LOOPS= +} + +echo "Yield injection (25%)" +inject_blocking -m 4 -y + +echo "Yield injection (50%)" +inject_blocking -m 2 -y + +echo "Yield injection (100%)" +inject_blocking -m 1 -y + +echo "Kill injection (25%)" +inject_blocking -m 4 -k + +echo "Kill injection (50%)" +inject_blocking -m 2 -k + +echo "Kill injection (100%)" +inject_blocking -m 1 -k + +echo "Sleep injection (1ms, 25%)" +inject_blocking -m 4 -s 1 + +echo "Sleep injection (1ms, 50%)" +inject_blocking -m 2 -s 1 + +echo "Sleep injection (1ms, 100%)" +inject_blocking -m 1 -s 1 + +echo "Disable rseq for 25% threads" +do_tests -D 4 + +echo "Disable rseq for 50% threads" +do_tests -D 2 + +echo "Disable rseq" +do_tests -d -- 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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Linux-kselftest-mirror December 2017