perf: Allow building PMU drivers as modules
authorYan, Zheng <zheng.z.yan@intel.com>
Tue, 18 Mar 2014 08:56:41 +0000 (16:56 +0800)
committerIngo Molnar <mingo@kernel.org>
Fri, 18 Apr 2014 10:54:45 +0000 (12:54 +0200)
commitc464c76eec4be587604ca082e8cded7e6b89f3bf
tree673036d1b0058e3703ef53b69cf7547ae469141d
parent1111b680d34bc19190f02a1b4479c3fcc592c22e
perf: Allow building PMU drivers as modules

This patch adds support for building PMU driver as module. It exports
the functions perf_pmu_{register,unregister}() and adds reference tracking
for the PMU driver module.

When the PMU driver is built as a module, each active event of the PMU
holds a reference to the driver module.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1395133004-23205-1-git-send-email-zheng.z.yan@intel.com
Cc: eranian@google.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
include/linux/perf_event.h
kernel/events/core.c