Stephane Eranian 65661f96d3 perf/x86: Add RAPL hrtimer support ...

The RAPL PMU counters do not interrupt on overflow.
Therefore, the kernel needs to poll the counters
to avoid missing an overflow. This patch adds
the hrtimer code to do this.

The timer interval is calculated at boot time
based on the power unit used by the HW.

There is one hrtimer per-cpu to handle the case
of multiple simultaneous use across cores on
the same package + hotplug CPU.

Thanks to Maria Dimakopoulou for her contributions
to this patch especially on the math aspects.

Signed-off-by: Stephane Eranian <eranian@google.com>
Reviewed-by: Maria Dimakopoulou <maria.n.dimakopoulou@gmail.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
[ Applied 32-bit build fix. ]
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: acme@redhat.com
Cc: jolsa@redhat.com
Cc: zheng.z.yan@intel.com
Cc: bp@alien8.de
Cc: maria.n.dimakopoulou@gmail.com
Link: http://lkml.kernel.org/r/1384275531-10892-5-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2013-11-27 15:31:23 +01:00

..

alpha

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2013-11-15 14:05:15 -08:00

arc

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

arm

Merge git://www.linux-watchdog.org/linux-watchdog

2013-11-18 15:56:13 -08:00

arm64

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2013-11-15 13:51:36 +09:00

avr32

avr32: handle pgtable_page_ctor() fail

2013-11-15 09:32:17 +09:00

blackfin

Merge tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux

2013-11-15 14:27:22 -08:00

c6x

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2013-11-15 14:05:15 -08:00

cris

cris: handle pgtable_page_ctor() fail

2013-11-15 09:32:17 +09:00

frv

frv: handle pgtable_page_ctor() fail

2013-11-15 09:32:17 +09:00

hexagon

kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS

2013-11-15 09:32:22 +09:00

ia64

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

m32r

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

m68k

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2013-11-15 14:05:15 -08:00

metag

kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS

2013-11-15 09:32:22 +09:00

microblaze

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2013-11-15 14:05:15 -08:00

mips

Merge tag 'mmc-updates-for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

2013-11-18 14:47:30 -08:00

mn10300

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

openrisc

Merge tag 'for-3.13' of git://git.openrisc.net/~jonas/linux

2013-11-15 14:26:38 -08:00

parisc

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

2013-11-15 14:05:15 -08:00

powerpc

Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/core

2013-11-21 09:59:27 +01:00

s390

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

score

score: handle pgtable_page_ctor() fail

2013-11-15 09:32:18 +09:00

sh

Merge tag 'mmc-updates-for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

2013-11-18 14:47:30 -08:00

sparc

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

tile

kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS

2013-11-15 09:32:22 +09:00

um

um: handle pgtable_page_ctor() fail

2013-11-15 09:32:19 +09:00

unicore32

Merge tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

2013-11-16 12:21:40 -08:00

x86

perf/x86: Add RAPL hrtimer support

2013-11-27 15:31:23 +01:00

xtensa

xtensa: use buddy allocator for PTE table

2013-11-15 09:32:19 +09:00

.gitignore

…

Kconfig

kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS

2013-11-15 09:32:22 +09:00