January 2025 - Linux-kselftest-mirror

[PATCH v3 2/2] selftests/lib.mk: Introduce check to validate required dependencies

by Siddharth Menon

Currently, kselftests does not have a generalised mechanism to skip compilation and run tests when required kernel configuration flags are missing. This patch introduces a check to validate the presence of required config flags specified in the selftest config files. In case scripts/config or the current kernel config is not found, this check is skipped. In order to skip checking for config options required to compile the test, set the environment variable SKIP_CHECKS=1. example usage: ``` make SKIP_CHECKS=1 -C livepatch/ ``` Suggested-by: Petr Mladek <pmladek(a)suse.com> Suggested-by: Miroslav Benes <mbenes(a)suse.cz> Signed-off-by: Siddharth Menon <simeddon(a)gmail.com> --- v1->v2: - Moved the logic to check for required configurations to an external script v2 -> v3: - Add SKIP_CHECKS flag to skip checking the dependencies if required - Updated the test skip statement to be more meaningful tools/testing/selftests/lib.mk | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) mode change 100644 => 100755 tools/testing/selftests/lib.mk diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk old mode 100644 new mode 100755 index d6edcfcb5be8..0e11d1d3bab8 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -97,7 +97,18 @@ TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) -all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ +TEST_DIR := $(shell pwd) + +check_kselftest_deps: +ifneq ($(SKIP_CHECKS),1) + @$(selfdir)/check_kselftest_deps.pl $(TEST_DIR) $(CC) || { \ + echo "Skipping test: $(notdir $(TEST_DIR)) (missing required kernel features)"; \ + exit 1; \ + } +endif + + +all: check_kselftest_deps $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) define RUN_TESTS @@ -228,4 +239,4 @@ $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ endif -.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir +.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir check_kselftest_deps -- 2.39.5

9 months, 1 week

1
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[PATCH v3 1/2] selftests: Introduce script to validate required dependencies

by Siddharth Menon

This patch adds a script to validate that the current kernel configuration satisfies the requirements for selftests by comparing the current kernel configs against the required selftest configs. The script also runs kselftest_deps.sh to check for any missing libraries required by the selftest. A config mismatch exits with error value 1 while matching configs or missing config files exit with value 0. In order to silence missing dependency output, set the environment variable SILENCE=1. The code for extracting the current kernel configs is adapted from scripts/kconfig/streamline_config.pl. Suggested-by: Petr Mladek <pmladek(a)suse.com> Suggested-by: Miroslav Benes <mbenes(a)suse.cz> Signed-off-by: Siddharth Menon <simeddon(a)gmail.com> --- v1->v2: - check selftest/config directly rather than a separate set in the test makefile v2->v3: - Integrate kselftest_deps.sh to check for missing libraries (I have not set it to skip the tests here, as it sometimes throws outputs such as missing $(LIB) or $(MNL_LDLIBS)) - Replaced spaces with tabs, removed trailing spaces and other minor formatting changes - Introduced flag to silence the missing dependencies debug statements - Rename script to a more meaningful name .../testing/selftests/check_kselftest_deps.pl | 170 ++++++++++++++++++ 1 file changed, 170 insertions(+) create mode 100755 tools/testing/selftests/check_kselftest_deps.pl diff --git a/tools/testing/selftests/check_kselftest_deps.pl b/tools/testing/selftests/check_kselftest_deps.pl new file mode 100755 index 000000000000..5d2298e3ffea --- /dev/null +++ b/tools/testing/selftests/check_kselftest_deps.pl @@ -0,0 +1,170 @@ +#!/usr/bin/env perl +# SPDX-License-Identifier: GPL-2.0 +use warnings; +use strict; +use Getopt::Long; +use File::Spec; +use File::Basename; + +# set the environment variable SILENCE to silence +# debug output. + +# Check if required arguments are provided +die "Usage: $0 <selftest_path> <compiler>\n" unless @ARGV >= 2; + +my $test_path = $ARGV[0]; +my $cc = join(' ', @ARGV[1..$#ARGV]); +my $script_dir = dirname(__FILE__); + +my $silenceprint; +$silenceprint = 1 if (defined($ENV{SILENCE})); + +sub dprint { + return if ($silenceprint); + print STDERR @_; +} + +my $uname = `uname -r`; +chomp $uname; + +my @searchconfigs = ( + { + "file" => ".config", + "exec" => "cat", + }, + { + "file" => "/proc/config.gz", + "exec" => "zcat", + }, + { + "file" => "/boot/config-$uname", + "exec" => "cat", + }, + { + "file" => "/boot/vmlinuz-$uname", + "exec" => "scripts/extract-ikconfig", + "test" => "scripts/extract-ikconfig", + }, + { + "file" => "vmlinux", + "exec" => "scripts/extract-ikconfig", + "test" => "scripts/extract-ikconfig", + }, + { + "file" => "/lib/modules/$uname/kernel/kernel/configs.ko", + "exec" => "scripts/extract-ikconfig", + "test" => "scripts/extract-ikconfig", + }, + { + "file" => "/lib/modules/$uname/build/.config", + "exec" => "cat", + }, + { + "file" => "kernel/configs.ko", + "exec" => "scripts/extract-ikconfig", + "test" => "scripts/extract-ikconfig", + }, + { + "file" => "kernel/configs.o", + "exec" => "scripts/extract-ikconfig", + "test" => "scripts/extract-ikconfig", + }, +); + +sub read_config { + foreach my $conf (@searchconfigs) { + my $file = $conf->{"file"}; + + next unless -f $file; + + if (defined $conf->{"test"}) { + `$conf->{"test"} $file 2>/dev/null`; + next if $?; + } + + my $exec = $conf->{"exec"}; + + # dprint "Kernel config: '$file'\n"; + + open(my $infile, '-|', "$exec $file") or die "Failed to run $exec $file"; + my @config_content = <$infile>; + close $infile; + + return @config_content; + } + + dprint "Unable to find kernel config file, skipping check\n"; + exit 0; +} + +sub check_libs { + my $command = "cd $script_dir && ./kselftest_deps.sh \"$cc\" $test_path"; + my $lib_test = `$command 2>&1`; + my $exit_code = $? >> 8; + + if ($exit_code != 0) { + die "Error: Failed to run kselftest_deps.sh with exit code $exit_code\n"; + } + + return $lib_test; +} + +# Check for missing libraries +my $lib_test = check_libs(); +my $fail_libs; + +if ($lib_test =~ +/(--------------------------------------------------------\s +*Missing libraries system.*? +--------------------------------------------------------)/s) { + $fail_libs = $1; +} + +dprint("$fail_libs\n") if $fail_libs; + +# Read and parse kernel config +my @config_file = read_config(); +my %kern_configs; +foreach my $line (@config_file) { + chomp $line; + next if $line =~ /^\s*$/ || $line =~ /^#/; + + if ($line =~ /^(CONFIG_\w+)=(.+)$/) { + $kern_configs{$1} = $2; + } +} + +# Read and parse test config +my %test_configs; +open(my $fh, '<', "$test_path/config") or exit 0; + +while (my $line = <$fh>) { + chomp $line; + next if $line =~ /^\s*$/ || $line =~ /^#/; + + if ($line =~ /^(CONFIG_\w+)=(.+)$/) { + $test_configs{$1} = $2; + } +} +close $fh; + +# Compare selftest configs with kernel configs +my $all_match = 1; +my @missing_or_mismatched; + +foreach my $key (keys %test_configs) { + if (!exists $kern_configs{$key} || $kern_configs{$key} ne $test_configs{$key}) { + push @missing_or_mismatched, "Required: $key=$test_configs{$key}"; + $all_match = 0; + } +} + +if ($all_match && !$fail_libs) { + exit 0; +} else { + dprint("--------------------------------------------------------\n") unless $fail_libs; + dprint("$_\n") for @missing_or_mismatched; + dprint("--------------------------------------------------------\n") if @missing_or_mismatched; + + exit 1; +} -- 2.39.5

9 months, 1 week

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[PATCH v5 0/4] Migrate PCI Endpoint Subsystem tests to Kselftest

by Manivannan Sadhasivam

Hi, This series carries forward the effort to add Kselftest for PCI Endpoint Subsystem started by Aman Gupta [1] a while ago. I reworked the initial version based on another patch that fixes the return values of IOCTLs in pci_endpoint_test driver and did many cleanups. Since the resulting work modified the initial version substantially, I took over the authorship. This series also incorporates the review comment by Shuah Khan [2] to move the existing tests from 'tools/pci' to 'tools/testing/kselftest/pci_endpoint' before migrating to Kselftest framework. I made sure that the tests are executable in each commit and updated documentation accordingly. - Mani [1] https://lore.kernel.org/linux-pci/20221007053934.5188-1-aman1.gupta@samsung… [2] https://lore.kernel.org/linux-pci/b2a5db97-dc59-33ab-71cd-f591e0b1b34d@linu… Changes in v5: * Incorporated comments from Niklas * Added a patch to fix the DMA MEMCPY check in pci-epf-test driver * Collected tags * Rebased on top of pci/next 0333f56dbbf7ef6bb46d2906766c3e1b2a04a94d Changes in v4: * Dropped the BAR fix patches and submitted them separately: https://lore.kernel.org/linux-pci/20241231130224.38206-1-manivannan.sadhasi… * Rebased on top of pci/next 9e1b45d7a5bc0ad20f6b5267992da422884b916e Changes in v3: * Collected tags. * Added a note about failing testcase 10 and command to skip it in documentation. * Removed Aman Gupta and Padmanabhan Rajanbabu from CC as their addresses are bouncing. Changes in v2: * Added a patch that fixes return values of IOCTL in pci_endpoint_test driver * Moved the existing tests to new location before migrating * Added a fix for BARs on Qcom devices * Updated documentation and also added fixture variants for memcpy & DMA modes Manivannan Sadhasivam (4): PCI: endpoint: pci-epf-test: Fix the check for DMA MEMCPY test misc: pci_endpoint_test: Fix the return value of IOCTL selftests: Move PCI Endpoint tests from tools/pci to Kselftests selftests: pci_endpoint: Migrate to Kselftest framework Documentation/PCI/endpoint/pci-test-howto.rst | 170 +++++------ MAINTAINERS | 2 +- drivers/misc/pci_endpoint_test.c | 255 +++++++++-------- drivers/pci/endpoint/functions/pci-epf-test.c | 4 +- tools/pci/Build | 1 - tools/pci/Makefile | 58 ---- tools/pci/pcitest.c | 264 ------------------ tools/pci/pcitest.sh | 73 ----- tools/testing/selftests/Makefile | 1 + .../testing/selftests/pci_endpoint/.gitignore | 2 + tools/testing/selftests/pci_endpoint/Makefile | 7 + tools/testing/selftests/pci_endpoint/config | 4 + .../pci_endpoint/pci_endpoint_test.c | 221 +++++++++++++++ 13 files changed, 435 insertions(+), 627 deletions(-) delete mode 100644 tools/pci/Build delete mode 100644 tools/pci/Makefile delete mode 100644 tools/pci/pcitest.c delete mode 100644 tools/pci/pcitest.sh create mode 100644 tools/testing/selftests/pci_endpoint/.gitignore create mode 100644 tools/testing/selftests/pci_endpoint/Makefile create mode 100644 tools/testing/selftests/pci_endpoint/config create mode 100644 tools/testing/selftests/pci_endpoint/pci_endpoint_test.c -- 2.25.1

9 months, 1 week

2
11
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selftests: arm64: pac.c:237:pac_instructions_not_nop:Expected 0 (0) != keyia (35747322042253312)

by Naresh Kamboju

The selftests: arm64: pac getting failed on FVP, Graviton-vm and Qemu-arm64 running Linux next-20250113..next-20250116. Started noticing from next-20250113. Bad: next-20250110 Bad: next-20250113 Test failed: pac global.pac_instructions_not_nop global.pac_instructions_not_nop_generic Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> Test regression: kselftest-arm64/arm64_pac Test output log: -------------- # selftests: arm64: pac # TAP version 13 # 1..7 # # Starting 7 tests from 1 test cases. # # RUN global.corrupt_pac ... # # OK global.corrupt_pac # ok 1 global.corrupt_pac # # RUN global.pac_instructions_not_nop ... # # pac.c:237:pac_instructions_not_nop:Expected 0 (0) != keyia (35747322042253312) # # pac.c:237:pac_instructions_not_nop:keyia instructions did nothing # # pac_instructions_not_nop: Test terminated by assertion # # FAIL global.pac_instructions_not_nop # not ok 2 global.pac_instructions_not_nop # # RUN global.pac_instructions_not_nop_generic ... # # pac.c:252:pac_instructions_not_nop_generic:Expected 0 (0) != keyg (35747322042253312) # # pac.c:252:pac_instructions_not_nop_generic:keyg instructions did nothing # # pac_instructions_not_nop_generic: Test terminated by assertion # # FAIL global.pac_instructions_not_nop_generic # not ok 3 global.pac_instructions_not_nop_generic # # RUN global.single_thread_different_keys ... # # OK global.single_thread_different_keys # ok 4 global.single_thread_different_keys # # RUN global.exec_changed_keys ... # # OK global.exec_changed_keys # ok 5 global.exec_changed_keys # # RUN global.context_switch_keep_keys ... # # OK global.context_switch_keep_keys # ok 6 global.context_switch_keep_keys # # RUN global.context_switch_keep_keys_generic ... # # OK global.context_switch_keep_keys_generic # ok 7 global.context_switch_keep_keys_generic # # FAILED: 5 / 7 tests passed. # # Totals: pass:5 fail:2 xfail:0 xpass:0 skip:0 error:0 not ok 37 selftests: arm64: pac # exit=1 Links: - https://qa-reports.linaro.org/lkft/linux-next-master/tests/kselftest-arm64/… - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250116/te… - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250116/te… -- Linaro LKFT https://lkft.linaro.org

9 months, 1 week

2
1
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[PATCH 3/3] selftests/ftrace: Add test that tests event :mod: commands

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> Now that here's a :mod: command that can be sent into set_event, add a test that tests its use. Both setting events for a loaded module, as well as caching what events to set for a module that is not loaded yet. Cc: Shuah Khan <shuah(a)kernel.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- .../ftrace/test.d/event/event-mod.tc | 192 ++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/event/event-mod.tc diff --git a/tools/testing/selftests/ftrace/test.d/event/event-mod.tc b/tools/testing/selftests/ftrace/test.d/event/event-mod.tc new file mode 100644 index 000000000000..6f7601c4b54b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/event/event-mod.tc @@ -0,0 +1,192 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event tracing - enable/disable with module event +# requires: set_event "Can enable module events via: :mod:":README +# flags: instance + +rmmod trace-events-sample ||: +if ! modprobe trace-events-sample ; then + echo "No trace-events sample module - please make CONFIG_SAMPLE_TRACE_EVENTS=m" + exit_unresolved; +fi +trap "rmmod trace-events-sample" EXIT + +# Set events for the module +echo ":mod:trace-events-sample" > set_event + +test_all_enabled() { + + # Check if more than one is enabled + grep -q sample-trace:foo_bar set_event + grep -q sample-trace:foo_bar_with_cond set_event + grep -q sample-trace:foo_bar_with_fn set_event + + # All of them should be enabled. Check via the enable file + val=`cat events/sample-trace/enable` + if [ $val -ne 1 ]; then + exit_fail + fi +} + +clear_events() { + echo > set_event + val=`cat events/enable` + if [ "$val" != "0" ]; then + exit_fail + fi + count=`cat set_event | wc -l` + if [ $count -ne 0 ]; then + exit_fail + fi +} + +test_all_enabled + +echo clear all events +echo 0 > events/enable + +echo Confirm the events are disabled +val=`cat events/sample-trace/enable` +if [ $val -ne 0 ]; then + exit_fail +fi + +echo And the set_event file is empty + +cnt=`wc -l set_event` +if [ $cnt -ne 0 ]; then + exit_fail +fi + +echo now enable all events +echo 1 > events/enable + +echo Confirm the events are enabled again +val=`cat events/sample-trace/enable` +if [ $val -ne 1 ]; then + exit_fail +fi + +echo disable just the module events +echo '!:mod:trace-events-sample' >> set_event + +echo Should have mix of events enabled +val=`cat events/enable` +if [ "$val" != "X" ]; then + exit_fail +fi + +echo Confirm the module events are disabled +val=`cat events/sample-trace/enable` +if [ $val -ne 0 ]; then + exit_fail +fi + +echo 0 > events/enable + +echo now enable the system events +echo 'sample-trace:mod:trace-events-sample' > set_event + +test_all_enabled + +echo clear all events +echo 0 > events/enable + +echo Confirm the events are disabled +val=`cat events/sample-trace/enable` +if [ $val -ne 0 ]; then + exit_fail +fi + +echo Test enabling foo_bar only +echo 'foo_bar:mod:trace-events-sample' > set_event + +grep -q sample-trace:foo_bar set_event + +echo make sure nothing is found besides foo_bar +if grep -q -v sample-trace:foo_bar set_event ; then + exit_fail +fi + +echo Append another using the system and event name +echo 'sample-trace:foo_bar_with_cond:mod:trace-events-sample' >> set_event + +grep -q sample-trace:foo_bar set_event +grep -q sample-trace:foo_bar_with_cond set_event + +count=`cat set_event | wc -l` + +if [ $count -ne 2 ]; then + exit_fail +fi + +clear_events + +rmmod trace-events-sample + +echo ':mod:trace-events-sample' > set_event + +echo make sure that the module shows up, and '-' is converted to '_' +grep -q '\*:\*:mod:trace_events_sample' set_event + +modprobe trace-events-sample + +test_all_enabled + +clear_events + +rmmod trace-events-sample + +echo Enable just the system events +echo 'sample-trace:mod:trace-events-sample' > set_event +grep -q 'sample-trace:mod:trace_events_sample' set_event + +modprobe trace-events-sample + +test_all_enabled + +clear_events + +rmmod trace-events-sample + +echo Enable event with just event name +echo 'foo_bar:mod:trace-events-sample' > set_event +grep -q 'foo_bar:mod:trace_events_sample' set_event + +echo Enable another event with both system and event name +echo 'sample-trace:foo_bar_with_cond:mod:trace-events-sample' >> set_event +grep -q 'sample-trace:foo_bar_with_cond:mod:trace_events_sample' set_event +echo Make sure the other event was still there +grep -q 'foo_bar:mod:trace_events_sample' set_event + +modprobe trace-events-sample + +echo There should be no :mod: cached events +if grep -q ':mod:' set_event; then + exit_fail +fi + +echo two events should be enabled +count=`cat set_event | wc -l` +if [ $count -ne 2 ]; then + exit_fail +fi + +echo only two events should be enabled +val=`cat events/sample-trace/enable` +if [ "$val" != "X" ]; then + exit_fail +fi + +val=`cat events/sample-trace/foo_bar/enable` +if [ "$val" != "1" ]; then + exit_fail +fi + +val=`cat events/sample-trace/foo_bar_with_cond/enable` +if [ "$val" != "1" ]; then + exit_fail +fi + +clear_trace + -- 2.45.2

9 months, 1 week

1
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[PATCH v4 0/3] Migrate PCI Endpoint Subsystem tests to Kselftest

by Manivannan Sadhasivam

Hi, This series carries forward the effort to add Kselftest for PCI Endpoint Subsystem started by Aman Gupta [1] a while ago. I reworked the initial version based on another patch that fixes the return values of IOCTLs in pci_endpoint_test driver and did many cleanups. Since the resulting work modified the initial version substantially, I took over the authorship. This series also incorporates the review comment by Shuah Khan [2] to move the existing tests from 'tools/pci' to 'tools/testing/kselftest/pci_endpoint' before migrating to Kselftest framework. I made sure that the tests are executable in each commit and updated documentation accordingly. - Mani [1] https://lore.kernel.org/linux-pci/20221007053934.5188-1-aman1.gupta@samsung… [2] https://lore.kernel.org/linux-pci/b2a5db97-dc59-33ab-71cd-f591e0b1b34d@linu… Changes in v4: * Dropped the BAR fix patches and submitted them separately: https://lore.kernel.org/linux-pci/20241231130224.38206-1-manivannan.sadhasi… * Rebased on top of pci/next 9e1b45d7a5bc0ad20f6b5267992da422884b916e Changes in v3: * Collected tags. * Added a note about failing testcase 10 and command to skip it in documentation. * Removed Aman Gupta and Padmanabhan Rajanbabu from CC as their addresses are bouncing. Changes in v2: * Added a patch that fixes return values of IOCTL in pci_endpoint_test driver * Moved the existing tests to new location before migrating * Added a fix for BARs on Qcom devices * Updated documentation and also added fixture variants for memcpy & DMA modes Manivannan Sadhasivam (3): misc: pci_endpoint_test: Fix the return value of IOCTL selftests: Move PCI Endpoint tests from tools/pci to Kselftests selftests: pci_endpoint: Migrate to Kselftest framework Documentation/PCI/endpoint/pci-test-howto.rst | 155 ++++------ MAINTAINERS | 2 +- drivers/misc/pci_endpoint_test.c | 250 ++++++++--------- tools/pci/Build | 1 - tools/pci/Makefile | 58 ---- tools/pci/pcitest.c | 264 ------------------ tools/pci/pcitest.sh | 73 ----- tools/testing/selftests/Makefile | 1 + .../testing/selftests/pci_endpoint/.gitignore | 2 + tools/testing/selftests/pci_endpoint/Makefile | 7 + tools/testing/selftests/pci_endpoint/config | 4 + .../pci_endpoint/pci_endpoint_test.c | 194 +++++++++++++ 12 files changed, 386 insertions(+), 625 deletions(-) delete mode 100644 tools/pci/Build delete mode 100644 tools/pci/Makefile delete mode 100644 tools/pci/pcitest.c delete mode 100644 tools/pci/pcitest.sh create mode 100644 tools/testing/selftests/pci_endpoint/.gitignore create mode 100644 tools/testing/selftests/pci_endpoint/Makefile create mode 100644 tools/testing/selftests/pci_endpoint/config create mode 100644 tools/testing/selftests/pci_endpoint/pci_endpoint_test.c -- 2.25.1

9 months, 1 week

2
14
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[PATCH 1/2] selftests/mm: use selftests framework to print test result.

by Zi Yan

Otherwise the number of tests does not match the reality. Fixes: 391e86971161 ("mm: selftest to verify zero-filled pages are mapped to zeropage") Signed-off-by: Zi Yan <ziy(a)nvidia.com> --- .../selftests/mm/split_huge_page_test.c | 34 +++++++------------ 1 file changed, 12 insertions(+), 22 deletions(-) diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c index 84b1251666aa..128004308233 100644 --- a/tools/testing/selftests/mm/split_huge_page_test.c +++ b/tools/testing/selftests/mm/split_huge_page_test.c @@ -108,38 +108,28 @@ static void verify_rss_anon_split_huge_page_all_zeroes(char *one_page, size_t le unsigned long rss_anon_before, rss_anon_after; size_t i; - if (!check_huge_anon(one_page, 4, pmd_pagesize)) { - printf("No THP is allocated\n"); - exit(EXIT_FAILURE); - } + if (!check_huge_anon(one_page, 4, pmd_pagesize)) + ksft_exit_fail_msg("No THP is allocated\n"); rss_anon_before = rss_anon(); - if (!rss_anon_before) { - printf("No RssAnon is allocated before split\n"); - exit(EXIT_FAILURE); - } + if (!rss_anon_before) + ksft_exit_fail_msg("No RssAnon is allocated before split\n"); /* split all THPs */ write_debugfs(PID_FMT, getpid(), (uint64_t)one_page, (uint64_t)one_page + len, 0); for (i = 0; i < len; i++) - if (one_page[i] != (char)0) { - printf("%ld byte corrupted\n", i); - exit(EXIT_FAILURE); - } + if (one_page[i] != (char)0) + ksft_exit_fail_msg("%ld byte corrupted\n", i); - if (!check_huge_anon(one_page, 0, pmd_pagesize)) { - printf("Still AnonHugePages not split\n"); - exit(EXIT_FAILURE); - } + if (!check_huge_anon(one_page, 0, pmd_pagesize)) + ksft_exit_fail_msg("Still AnonHugePages not split\n"); rss_anon_after = rss_anon(); - if (rss_anon_after >= rss_anon_before) { - printf("Incorrect RssAnon value. Before: %ld After: %ld\n", + if (rss_anon_after >= rss_anon_before) + ksft_exit_fail_msg("Incorrect RssAnon value. Before: %ld After: %ld\n", rss_anon_before, rss_anon_after); - exit(EXIT_FAILURE); - } } void split_pmd_zero_pages(void) @@ -150,7 +140,7 @@ void split_pmd_zero_pages(void) one_page = allocate_zero_filled_hugepage(len); verify_rss_anon_split_huge_page_all_zeroes(one_page, len); - printf("Split zero filled huge pages successful\n"); + ksft_test_result_pass("Split zero filled huge pages successful\n"); free(one_page); } @@ -491,7 +481,7 @@ int main(int argc, char **argv) if (argc > 1) optional_xfs_path = argv[1]; - ksft_set_plan(3+9); + ksft_set_plan(4+9); pagesize = getpagesize(); pageshift = ffs(pagesize) - 1; -- 2.45.2

9 months, 1 week

1
3
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[PATCH bpf-next v5 0/4] xsk: TX metadata Launch Time support

by Song Yoong Siang

This series expands the XDP TX metadata framework to allow user applications to pass per packet 64-bit launch time directly to the kernel driver, requesting launch time hardware offload support. The XDP TX metadata framework will not perform any clock conversion or packet reordering. Please note that the role of Tx metadata is just to pass the launch time, not to enable the offload feature. Users will need to enable the launch time hardware offload feature of the device by using the respective command, such as the tc-etf command. Although some devices use the tc-etf command to enable their launch time hardware offload feature, xsk packets will not go through the etf qdisc. Therefore, in my opinion, the launch time should always be based on the PTP Hardware Clock (PHC). Thus, i did not include a clock ID to indicate the clock source. To simplify the test steps, I modified the xdp_hw_metadata bpf self-test tool in such a way that it will set the launch time based on the offset provided by the user and the value of the Receive Hardware Timestamp, which is against the PHC. This will eliminate the need to discipline System Clock with the PHC and then use clock_gettime() to get the time. Please note that AF_XDP lacks a feedback mechanism to inform the application if the requested launch time is invalid. So, users are expected to familiar with the horizon of the launch time of the device they use and not request a launch time that is beyond the horizon. Otherwise, the driver might interpret the launch time incorrectly and react wrongly. For stmmac and igc, where modulo computation is used, a launch time larger than the horizon will cause the device to transmit the packet earlier that the requested launch time. Although there is no feedback mechanism for the launch time request for now, user still can check whether the requested launch time is working or not, by requesting the Transmit Completion Hardware Timestamp. Changes since v1: - renamed to use Earliest TxTime First (Willem) - renamed to use txtime (Willem) Changes since v2: - renamed to use launch time (Jesper & Willem) - changed the default launch time in xdp_hw_metadata apps from 1s to 0.1s because some NICs do not support such a large future time. Changes since v3: - added XDP launch time support to the igc driver (Jesper & Florian) - added per-driver launch time limitation on xsk-tx-metadata.rst (Jesper) - added explanation on FIFO behavior on xsk-tx-metadata.rst (Jakub) - added step to enable launch time in the commit message (Jesper & Willem) - explicitly documented the type of launch_time and which clock source it is against (Willem) Changes since v4: - change netdev feature name from tx-launch-time to tx-launch-time-fifo to explicitly state the FIFO behaviour (Stanislav) - improve the looping of xdp_hw_metadata app to wait for packet tx completion to be more readable by using clock_gettime() (Stanislav) - add launch time setup steps into xdp_hw_metadata app (Stanislav) v1: https://patchwork.kernel.org/project/netdevbpf/cover/20231130162028.852006-… v2: https://patchwork.kernel.org/project/netdevbpf/cover/20231201062421.1074768… v3: https://patchwork.kernel.org/project/netdevbpf/cover/20231203165129.1740512… v4: https://patchwork.kernel.org/project/netdevbpf/cover/20250106135506.9687-1-… Song Yoong Siang (4): xsk: Add launch time hardware offload support to XDP Tx metadata selftests/bpf: Add launch time request to xdp_hw_metadata net: stmmac: Add launch time support to XDP ZC igc: Add launch time support to XDP ZC Documentation/netlink/specs/netdev.yaml | 4 + Documentation/networking/xsk-tx-metadata.rst | 62 +++++++++ drivers/net/ethernet/intel/igc/igc_main.c | 78 +++++++---- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 + .../net/ethernet/stmicro/stmmac/stmmac_main.c | 13 ++ include/net/xdp_sock.h | 10 ++ include/net/xdp_sock_drv.h | 1 + include/uapi/linux/if_xdp.h | 10 ++ include/uapi/linux/netdev.h | 3 + net/core/netdev-genl.c | 2 + net/xdp/xsk.c | 3 + tools/include/uapi/linux/if_xdp.h | 10 ++ tools/include/uapi/linux/netdev.h | 3 + tools/testing/selftests/bpf/xdp_hw_metadata.c | 121 +++++++++++++++++- 14 files changed, 298 insertions(+), 24 deletions(-) -- 2.34.1

9 months, 1 week

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[PATCH v2] selftests/net/forwarding: teamd command not found

by Alessandro Zanni

Running "make kselftest TARGETS=net/forwarding" results in multiple ccurrences of the same error: - ./lib.sh: line 787: teamd: command not found This patch adds the variable $REQUIRE_TEAMD in every test that uses the command teamd and checks the $REQUIRE_TEAMD variable in the file "lib.sh" to skip the test if the command is not installed. Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- Notes: v2: added variable REQUIRED_TEAMD to check if teamd is required tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh | 1 + tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh | 1 + tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh | 1 + tools/testing/selftests/net/forwarding/lib.sh | 4 ++++ .../selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh | 1 + tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh | 1 + .../testing/selftests/net/forwarding/router_bridge_1d_lag.sh | 1 + tools/testing/selftests/net/forwarding/router_bridge_lag.sh | 1 + 8 files changed, 11 insertions(+) diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh index b79542a4dcc7..4a11bf1d514a 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh @@ -12,6 +12,7 @@ ALL_TESTS=" bridge_rif_remaster_port " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh index e28f978104f3..b8bbe94f4736 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh @@ -10,6 +10,7 @@ ALL_TESTS=" lag_rif_nomaster_addr " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh index 6318cfa6434c..d1a9d379eaf3 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh @@ -10,6 +10,7 @@ ALL_TESTS=" lag_rif_nomaster_addr " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 7337f398f9cc..996a866ed6de 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -68,6 +68,7 @@ declare -A NETIFS=( : "${REQUIRE_JQ:=yes}" : "${REQUIRE_MZ:=yes}" : "${REQUIRE_MTOOLS:=no}" +: "${REQUIRE_TEAMD:=no}" # Whether to override MAC addresses on interfaces participating in the test. : "${STABLE_MAC_ADDRS:=no}" @@ -321,6 +322,9 @@ fi if [[ "$REQUIRE_MZ" = "yes" ]]; then require_command $MZ fi +if [[ "$REQUIRE_TEAMD" = "yes" ]]; then + require_command $TEAMD +fi if [[ "$REQUIRE_MTOOLS" = "yes" ]]; then # https://github.com/troglobit/mtools require_command msend diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh index fe4d7c906a70..a20d22d1df36 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh @@ -49,6 +49,7 @@ ALL_TESTS=" test_mirror_gretap_second " +REQUIRE_TEAMD="yes" NUM_NETIFS=6 source lib.sh source mirror_lib.sh diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh index 1261e6f46e34..ff7049582d35 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh @@ -53,6 +53,7 @@ ALL_TESTS=" test_mirror_gretap_second " +REQUIRE_TEAMD="yes" NUM_NETIFS=6 source lib.sh source mirror_lib.sh diff --git a/tools/testing/selftests/net/forwarding/router_bridge_1d_lag.sh b/tools/testing/selftests/net/forwarding/router_bridge_1d_lag.sh index e064b946e821..16583a470ec3 100755 --- a/tools/testing/selftests/net/forwarding/router_bridge_1d_lag.sh +++ b/tools/testing/selftests/net/forwarding/router_bridge_1d_lag.sh @@ -109,6 +109,7 @@ ALL_TESTS=" ping_ipv4 ping_ipv6 " +REQUIRE_TEAMD="yes" NUM_NETIFS=8 source lib.sh diff --git a/tools/testing/selftests/net/forwarding/router_bridge_lag.sh b/tools/testing/selftests/net/forwarding/router_bridge_lag.sh index f05ffe213c46..2a4cd1af1b85 100755 --- a/tools/testing/selftests/net/forwarding/router_bridge_lag.sh +++ b/tools/testing/selftests/net/forwarding/router_bridge_lag.sh @@ -76,6 +76,7 @@ ping_ipv4 ping_ipv6 "} +REQUIRE_TEAMD="yes" NUM_NETIFS=8 : ${lib_dir:=.} source $lib_dir/lib.sh -- 2.43.0

9 months, 1 week

2
1
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[PATCH v6 0/3] riscv/ptrace: add new regset to access original a0 register

by Celeste Liu

The orig_a0 is missing in struct user_regs_struct of riscv, and there is no way to add it without breaking UAPI. (See Link tag below) Like NT_ARM_SYSTEM_CALL do, we add a new regset name NT_RISCV_ORIG_A0 to access original a0 register from userspace via ptrace API. Link: https://lore.kernel.org/all/59505464-c84a-403d-972f-d4b2055eeaac@gmail.com/ Signed-off-by: Celeste Liu <uwu(a)coelacanthus.name> --- Changes in v6: - Fix obsolute comment. - Copy include/linux/stddef.h to tools/include to use offsetofend in selftests. - Link to v5: https://lore.kernel.org/r/20250115-riscv-new-regset-v5-0-d0e6ec031a23@coela… Changes in v5: - Fix wrong usage in selftests. - Link to v4: https://lore.kernel.org/r/20241226-riscv-new-regset-v4-0-4496a29d0436@coela… Changes in v4: - Fix a copy paste error in selftest. (Forget to commit...) - Link to v3: https://lore.kernel.org/r/20241226-riscv-new-regset-v3-0-f5b96465826b@coela… Changes in v3: - Use return 0 directly for readability. - Fix test for modify a0. - Add Fixes: tag - Remove useless Cc: stable. - Selftest will check both a0 and orig_a0, but depends on the correctness of PTRACE_GET_SYSCALL_INFO. - Link to v2: https://lore.kernel.org/r/20241203-riscv-new-regset-v2-0-d37da8c0cba6@coela… Changes in v2: - Fix integer width. - Add selftest. - Link to v1: https://lore.kernel.org/r/20241201-riscv-new-regset-v1-1-c83c58abcc7b@coela… --- Celeste Liu (3): riscv/ptrace: add new regset to access original a0 register tools: copy include/linux/stddef.h to tools/include riscv: selftests: Add a ptrace test to verify a0 and orig_a0 access arch/riscv/kernel/ptrace.c | 32 +++++ include/uapi/linux/elf.h | 1 + tools/include/linux/stddef.h | 85 ++++++++++++ tools/include/uapi/linux/stddef.h | 6 +- tools/testing/selftests/riscv/abi/.gitignore | 1 + tools/testing/selftests/riscv/abi/Makefile | 6 +- tools/testing/selftests/riscv/abi/ptrace.c | 193 +++++++++++++++++++++++++++ 7 files changed, 319 insertions(+), 5 deletions(-) --- base-commit: 0e287d31b62bb53ad81d5e59778384a40f8b6f56 change-id: 20241201-riscv-new-regset-d529b952ad0d Best regards, -- Celeste Liu <uwu(a)coelacanthus.name>

9 months, 1 week

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Linux-kselftest-mirror January 2025