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linux-next/kernel/events
Sukadev Bhattiprolu 01add3eaf1 perf/core: Split perf_event_read() and perf_event_count()
perf_event_read() does two things:

	- call the PMU to read/update the counter value, and
	- compute the total count of the event and its children

Not all callers need both. perf_event_reset() for instance needs the
first piece but doesn't need the second.  Similarly, when we implement
the ability to read a group of events using the transaction interface,
we would need the two pieces done independently.

Break up perf_event_read() and have it just read/update the counter
and have the callers compute the total count if necessary.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
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>
Link: http://lkml.kernel.org/r/1441336073-22750-4-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-09-13 11:27:25 +02:00
..
callchain.c Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
core.c perf/core: Split perf_event_read() and perf_event_count() 2015-09-13 11:27:25 +02:00
hw_breakpoint.c perf: Remove type specific target pointers 2015-03-23 10:58:04 +01:00
internal.h perf: Fix AUX buffer refcounting 2015-07-06 14:08:30 +02:00
Makefile ftrace: allow architectures to specify ftrace compile options 2015-01-29 09:19:19 +01:00
ring_buffer.c perf/ring-buffer: Clarify the use of page::private for high-order AUX allocations 2015-08-12 11:43:20 +02:00
uprobes.c uprobes: Fix the waitqueue_active() check in xol_free_insn_slot() 2015-07-31 10:38:07 +02:00