]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
perf/x86/intel/bts: Make it an exclusive PMU
authorAlexander Shishkin <alexander.shishkin@linux.intel.com>
Tue, 20 Sep 2016 15:48:10 +0000 (18:48 +0300)
committerIngo Molnar <mingo@kernel.org>
Thu, 22 Sep 2016 12:56:08 +0000 (14:56 +0200)
commit08b90f0655258411a1b41d856331e20e7ec8d55c
treedae037a0c35cd63216a16f7e75e7149057569115
parentf1e1c9e5e357c05253affb13be29285c5cb56bf0
perf/x86/intel/bts: Make it an exclusive PMU

Just like intel_pt, intel_bts can only handle one event at a time,
which is the reason we introduced PERF_PMU_CAP_EXCLUSIVE in the first
place. However, at the moment one can have as many intel_bts events
within the same context at the same time as one pleases. Only one of
them, however, will get scheduled and receive the actual trace data.

Fix this by making intel_bts an "exclusive" PMU.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160920154811.3255-2-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/events/intel/bts.c