Peter Zijlstra 0d3d73aac2 perf/core: Rewrite event timekeeping ... The current even timekeeping, which computes enabled and running times, uses 3 distinct timestamps to reflect the various event states: OFF (stopped), INACTIVE (enabled) and ACTIVE (running). Furthermore, the update rules are such that even INACTIVE events need their timestamps updated. This is undesirable because we'd like to not touch INACTIVE events if at all possible, this makes event scheduling (much) more expensive than needed. Rewrite the timekeeping to directly use event->state, this greatly simplifies the code and results in only having to update things when we change state, or an up-to-date value is requested (read). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-10-27 10:31:59 +02:00
..
callchain.c	perf/callchain: Force USER_DS when invoking perf_callchain_user()	2017-05-10 07:54:00 +02:00
core.c	perf/core: Rewrite event timekeeping	2017-10-27 10:31:59 +02:00
hw_breakpoint.c
internal.h	tracing, perf: Adjust code layout in get_recursion_context()	2017-08-25 11:04:18 +02:00
Makefile
ring_buffer.c	perf/aux: Only update ->aux_wakeup in non-overwrite mode	2017-09-29 10:06:45 +02:00
uprobes.c	mm, uprobes: fix multiple free of ->uprobes_state.xol_area	2017-08-31 16:33:15 -07:00