path: root/kernel/trace
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authorFrederic Weisbecker <fweisbec@gmail.com>2009-11-26 05:35:41 +0100
committerIngo Molnar <mingo@elte.hu>2009-11-26 09:29:21 +0100
commitc6567f642e20bcc79abed030f44be5b0d6da2ded (patch)
treeeff0dee5075d220b46019019f8e0d8e8a7bd30f3 /kernel/trace
parentd99be40aff88722ab03ee295e4f6c13a4cca9a3d (diff)
hw-breakpoints: Improve in-kernel event creation error granularity
In fail case, perf_event_create_kernel_counter() returns NULL instead of an error, which doesn't help us to inform the user about the origin of the problem from the outer most callers. Often we can just return -EINVAL, which doesn't help anyone when it's eventually about a memory allocation failure. Then, this patch makes perf_event_create_kernel_counter() always return a detailed error code. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Prasad <prasad@linux.vnet.ibm.com> LKML-Reference: <1259210142-5714-2-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace')
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