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f36a1a133a
If we have the powerpc perf_counter backend compiled in, but the cpu we are running on is one where we don't support the PMU, we currently oops in hw_perf_group_sched_in if we try to use any counters, because ppmu is NULL in that case, and we unconditionally dereference ppmu. This fixes the problem by adding a check if ppmu is NULL at the beginning of hw_perf_group_sched_in, and also at the beginning of the other functions that get called from the perf_counter core, i.e. hw_perf_disable, hw_perf_enable, and hw_perf_counter_setup. Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: benh@kernel.crashing.org Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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| blackfin | ||
| cris | ||
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| h8300 | ||
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| m32r | ||
| m68k | ||
| m68knommu | ||
| microblaze | ||
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| mn10300 | ||
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| powerpc | ||
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| sparc | ||
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| xtensa | ||
| .gitignore | ||
| Kconfig | ||