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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 13:13:57 +08:00
linux-next/include
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
..
acpi ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again 2017-09-19 22:42:31 +02:00
asm-generic percpu: make this_cpu_generic_read() atomic w.r.t. interrupts 2017-09-26 07:37:33 -07:00
clocksource
crypto
drm lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
dt-bindings ARC: reset: remove the misleading v1 suffix all over 2017-09-18 13:02:03 +02:00
keys net: rxrpc: Replace time_t type with time64_t type 2017-08-29 10:16:00 +01:00
kvm
linux perf/core: Rewrite event timekeeping 2017-10-27 10:31:59 +02:00
math-emu
media media updates for v4.14-rc1 2017-09-07 12:53:14 -07:00
memory
misc
net tcp/dccp: fix ireq->opt races 2017-10-21 01:33:19 +01:00
pcmcia
ras
rdma IB: Correct MR length field to be 64-bit 2017-09-25 11:47:23 -04:00
scsi scsi: libiscsi: Remove iscsi_destroy_session 2017-10-02 22:23:21 -04:00
soc ARM: SoC driver updates for v4.14 2017-09-10 20:40:00 -07:00
sound ALSA: hda - Fix incorrect TLV callback check introduced during set_fs() removal 2017-10-18 12:27:00 +02:00
target
trace sched/debug: Add explicit TASK_PARKED printing 2017-09-29 11:02:57 +02:00
uapi membarrier: Provide register expedited private command 2017-10-19 22:13:40 -04:00
video
xen xen, arm64: drop dummy lookup_address() 2017-09-19 09:25:05 -04:00