diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/arch/x86/tests/amd-ibs-period.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/tests/amd-ibs-period.c b/tools/perf/arch/x86/tests/amd-ibs-period.c index 7c77d86f369d..223e059e04de 100644 --- a/tools/perf/arch/x86/tests/amd-ibs-period.c +++ b/tools/perf/arch/x86/tests/amd-ibs-period.c @@ -3,6 +3,7 @@ #include <sys/syscall.h> #include <sys/mman.h> #include <sys/ioctl.h> +#include <sys/utsname.h> #include <string.h> #include "arch-tests.h" @@ -912,6 +913,29 @@ out: return max_sample_rate; } +/* + * Bunch of IBS sample period fixes that this test exercise went in v6.15. + * Skip the test on older kernels to distinguish between test failure due + * to a new bug vs known failure due to older kernel. + */ +static bool kernel_v6_15_or_newer(void) +{ + struct utsname utsname; + char *endptr = NULL; + long major, minor; + + if (uname(&utsname) < 0) { + pr_debug("uname() failed. [%m]"); + return false; + } + + major = strtol(utsname.release, &endptr, 10); + endptr++; + minor = strtol(endptr, NULL, 10); + + return major >= 6 && minor >= 15; +} + int test__amd_ibs_period(struct test_suite *test __maybe_unused, int subtest __maybe_unused) { @@ -931,6 +955,11 @@ int test__amd_ibs_period(struct test_suite *test __maybe_unused, if (!x86__is_amd_cpu() || !fetch_pmu || !op_pmu) return TEST_SKIP; + if (!kernel_v6_15_or_newer()) { + pr_debug("Need v6.15 or newer kernel. Skipping.\n"); + return TEST_SKIP; + } + perf_exe(perf, sizeof(perf)); if (sched_affine(0)) |