Lorenzo Pieralisi 81bd205885 UPSTREAM: drivers/perf: arm_pmu: implement CPU_PM notifier ... (cherry picked from commit da4e4f18af) When a CPU is suspended (either through suspend-to-RAM or CPUidle), its PMU registers content can be lost, which means that counters registers values that were initialized on power down entry have to be reprogrammed on power-up to make sure the counters set-up is preserved (ie on power-up registers take the reset values on Cold or Warm reset, which can be architecturally UNKNOWN). To guarantee seamless profiling conditions across a core power down this patch adds a CPU PM notifier to ARM pmus, that upon CPU PM entry/exit from low-power states saves/restores the pmu registers set-up (by using the ARM perf API), so that the power-down/up cycle does not affect the perf behaviour (apart from a black-out period between power-up/down CPU PM notifications that is unavoidable). Change-Id: Ifbd73b82ca9dc172c58e2488cda1af9af975b14f Cc: Will Deacon <will.deacon@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2017-07-10 16:29:26 +05:30
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acpi
asm-generic	UPSTREAM: mm: add PHYS_PFN, use it in __phys_to_pfn()	2017-04-10 13:23:34 +05:30
clocksource	arm64: KVM: Implement timer save/restore	2016-11-09 22:15:41 +08:00
crypto	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2017-04-23 12:02:14 +08:00
drm	drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces	2017-04-12 12:38:33 +02:00
dt-bindings
keys
kvm	KVM: arm/arm64: vgic-v3: Make the LR indexing macro public	2016-11-09 22:15:40 +08:00
linux	UPSTREAM: drivers/perf: arm_pmu: implement CPU_PM notifier	2017-07-10 16:29:26 +05:30
math-emu
media	videobuf2-core: Check user space planes array in dqbuf	2016-05-04 14:48:50 -07:00
memory
misc
net	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2017-06-08 12:11:52 +08:00
pcmcia
ras
rdma	RDMA/core: Fix incorrect structure packing for booleans	2017-03-12 06:37:29 +01:00
rxrpc
scsi	scsi: libiscsi: add lock around task lists to fix list corruption regression	2017-03-26 12:13:19 +02:00
soc	ARM: at91: define LPDDR types	2017-03-12 06:37:24 +01:00
sound	ALSA: rawmidi: Make snd_rawmidi_transmit() race-free	2016-02-17 12:30:58 -08:00
target	target: Convert ACL change queue_depth se_session reference usage	2017-05-20 14:26:58 +02:00
trace	trace:sched: Make util_avg in load_avg trace reflect PELT/WALT as used	2017-06-21 16:37:44 +05:30
uapi	Merge remote-tracking branch 'lts/linux-4.4.y' into linux-linaro-lsk-v4.4	2017-05-15 17:31:58 +08:00
video	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-06-14 17:08:03 +08:00
xen	xen: Fix page <-> pfn conversion on 32 bit systems	2016-05-11 11:21:14 +02:00
Kbuild