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author | Peter Zijlstra <peterz@infradead.org> | 2016-03-11 15:23:46 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-03-21 09:08:15 +0100 |
commit | 0158b83f7508851cda9e62c4b14678c5bd492cb2 (patch) | |
tree | 9011836bbf1e36c74eeba00b78c4ca52021f0b16 /arch/x86/pci | |
parent | 1e02cd40f15190b78fcc6b3f50c952fb4028e9a5 (diff) | |
download | op-kernel-dev-0158b83f7508851cda9e62c4b14678c5bd492cb2.zip op-kernel-dev-0158b83f7508851cda9e62c4b14678c5bd492cb2.tar.gz |
perf/x86/ibs: Fix IBS throttle
When the IBS IRQ handler get a !0 return from perf_event_overflow;
meaning it should throttle the event, it only disables it, it doesn't
call perf_ibs_stop().
This confuses the state machine, as we'll use pmu::start() ->
perf_ibs_start() to unthrottle.
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vince@deater.net>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: dvyukov@google.com
Cc: oleg@redhat.com
Cc: panand@redhat.com
Cc: sasha.levin@oracle.com
Link: http://lkml.kernel.org/r/20160311142346.GE6344@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/pci')
0 files changed, 0 insertions, 0 deletions