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| author | Michael Ellerman <mpe@ellerman.id.au> | 2020-08-13 04:34:43 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-08 15:23:42 +0300 |
| commit | c0176429b7b07893a5c1fd38baff055c919ba9e3 (patch) | |
| tree | 620f668966ad6c1b4a75a918f22f8d509f62757b /tools/testing/selftests/powerpc/tm/tm-trap.c | |
| parent | 10bf59d923c2766ec8d6f0243481c865c7db9979 (diff) | |
| download | linux-c0176429b7b07893a5c1fd38baff055c919ba9e3.tar.xz | |
selftests/powerpc: Fix TM tests when CPU 0 is offline
Several of the TM tests fail spuriously if CPU 0 is offline, because
they blindly try to affinitise to CPU 0.
Fix them by picking any online CPU and using that instead.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200813013445.686464-1-mpe@ellerman.id.au
Diffstat (limited to 'tools/testing/selftests/powerpc/tm/tm-trap.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/tm-trap.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/tools/testing/selftests/powerpc/tm/tm-trap.c b/tools/testing/selftests/powerpc/tm/tm-trap.c index 601f0c1d450d..c75960af8018 100644 --- a/tools/testing/selftests/powerpc/tm/tm-trap.c +++ b/tools/testing/selftests/powerpc/tm/tm-trap.c @@ -247,8 +247,7 @@ void *pong(void *not_used) int tm_trap_test(void) { uint16_t k = 1; - - int rc; + int cpu, rc; pthread_attr_t attr; cpu_set_t cpuset; @@ -267,9 +266,12 @@ int tm_trap_test(void) usr1_sa.sa_sigaction = usr1_signal_handler; sigaction(SIGUSR1, &usr1_sa, NULL); - /* Set only CPU 0 in the mask. Both threads will be bound to cpu 0. */ + cpu = pick_online_cpu(); + FAIL_IF(cpu < 0); + + // Set only one CPU in the mask. Both threads will be bound to that CPU. CPU_ZERO(&cpuset); - CPU_SET(0, &cpuset); + CPU_SET(cpu, &cpuset); /* Init pthread attribute */ rc = pthread_attr_init(&attr); |