diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2020-08-03 04:07:19 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-08-03 14:12:41 +0200 |
| commit | 872d11bca9c29ed19595c993b9f552ffe9b63dcb (patch) | |
| tree | 101f33625913e951cad50b2ea693162014d6efb0 /tools/testing/selftests/powerpc/pmu/count_stcx_fail.c | |
| parent | powerpc/40x: Fix assembler warning about r0 (diff) | |
| download | linux-872d11bca9c29ed19595c993b9f552ffe9b63dcb.tar.xz linux-872d11bca9c29ed19595c993b9f552ffe9b63dcb.zip | |
selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs
Some of our tests use VSX or newer VMX instructions, so need to be
skipped on older CPUs to avoid SIGILL'ing.
Similarly TAR was added in v2.07, and the PMU event used in the stcx
fail test only works on Power8 or later.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200803020719.96114-1-mpe@ellerman.id.au
Diffstat (limited to 'tools/testing/selftests/powerpc/pmu/count_stcx_fail.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/count_stcx_fail.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c index 7b4ac4537702..2980abca31e0 100644 --- a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c +++ b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c @@ -9,6 +9,7 @@ #include <stdbool.h> #include <string.h> #include <sys/prctl.h> +#include <asm/cputable.h> #include "event.h" #include "utils.h" @@ -104,6 +105,9 @@ static int test_body(void) struct event events[3]; u64 overhead; + // The STCX_FAIL event we use works on Power8 or later + SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_2_07)); + setup_event(&events[0], PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions"); setup_event(&events[1], PERF_COUNT_HW_CPU_CYCLES, PERF_TYPE_HARDWARE, "cycles"); setup_event(&events[2], PM_STCX_FAIL, PERF_TYPE_RAW, "stcx_fail"); |