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ae0c3751ab
linux/arch/arm
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Mark Rutland ae0c3751ab ARM: 6975/1: pmu: reject duplicate PMU registrations 
Currently, the PMU reservation framework allows for multiple PMUs of
the same type to register themselves. This can lead to a bug with the
sequence:

register_pmu(pmu1);
reserve_pmu(pmu_type);
register_pmu(pmu2);
release_pmu(pmu1);

Here, pmu1 cannot be released, and pmu2 cannot be reserved.

This patch modifies register_pmu to reject registrations where a PMU is
already present, preventing this problem. PMUs which can have multiple
instances should not use the PMU reservation framework.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-29 10:27:08 +01:00
..
boot ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
common Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable 2011-05-25 21:47:48 +01:00
configs Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-05-27 19:51:32 -07:00
include/asm ARM: 6974/1: pmu: refactor reservation 2011-06-29 10:27:08 +01:00
kernel ARM: 6975/1: pmu: reject duplicate PMU registrations 2011-06-29 10:27:08 +01:00
lib ARM: 6945/1: Add unwinding support for division functions 2011-05-27 22:56:53 +01:00
mach-at91 at91: drop at572d940hf support 2011-05-25 23:04:35 +08:00
mach-bcmring ARM: bcmring: convert to use sp804 clockevents 2011-05-23 18:04:54 +01:00
mach-clps711x
mach-cns3xxx
mach-davinci Merge branch 'davinci-next' of git://gitorious.org/linux-davinci/linux-davinci into devel-stable 2011-05-25 00:11:25 +01:00
mach-dove ARM: dove: Consolidate mpp code with platform mpp. 2011-05-16 15:49:31 -04:00
mach-ebsa110
mach-ep93xx
mach-exynos4 Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6 2011-05-28 10:56:34 -07:00
mach-footbridge clocksource: convert footbridge to generic i8253 clocksource 2011-05-14 10:29:48 +01:00
mach-gemini Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
mach-h720x ARM: Replace platform definition of ISA_DMA_THRESHOLD/MAX_DMA_ADDRESS 2011-05-12 08:36:49 +01:00
mach-imx ARM: imx: move mx3 support to mach-imx 2011-05-19 13:11:38 +02:00
mach-integrator Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-iop13xx
mach-iop32x
mach-iop33x
mach-ixp4xx Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
mach-ixp23xx
mach-ixp2000
mach-kirkwood ARM: orion: Refactor the MPP code common in the orion platform 2011-05-16 15:25:54 -04:00
mach-ks8695
mach-l7200/include/mach
mach-loki ARM: orion: Consolidate ethernet platform data 2011-05-16 15:06:01 -04:00
mach-lpc32xx clocksource: convert ARM 32-bit up counting clocksources 2011-05-23 18:04:51 +01:00
mach-mmp
mach-msm Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-05-23 15:15:27 -07:00
mach-mv78xx0 ARM: orion: Refactor the MPP code common in the orion platform 2011-05-16 15:25:54 -04:00
mach-mx5 ARM: mxc: don't allow to compile together i.MX51 and i.MX53 2011-05-19 13:11:30 +02:00
mach-mxs Merge branch 'devel-stable' into for-linus 2011-05-23 19:28:04 +01:00
mach-netx ARM: 6827/1: mach-netx: delete hardcoded periphid 2011-05-26 10:33:34 +01:00
mach-nomadik gpio: move Nomadik GPIO driver to drivers/gpio 2011-05-26 17:30:03 -06:00
mach-nuc93x
mach-omap1 Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-omap2 Merge git://git.infradead.org/battery-2.6 2011-05-27 10:12:35 -07:00
mach-orion5x ARM: orion5x: Refactor mpp code to use common orion platform mpp. 2011-05-16 15:42:59 -04:00
mach-pnx4008
mach-pxa Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
mach-realview Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-rpc
mach-s3c24a0/include/mach
mach-s3c64xx Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable 2011-05-25 21:47:48 +01:00
mach-s3c2400
mach-s3c2410 Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
mach-s3c2412
mach-s3c2416 Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
mach-s3c2440
mach-s3c2443
mach-s5p64x0
mach-s5pc100 gpio: Move the s5pc100 GPIO to drivers/gpio 2011-05-26 17:33:41 -06:00
mach-s5pv210 gpio: Move the s5pv210 GPIO to drivers/gpio 2011-05-26 17:33:37 -06:00
mach-sa1100 Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-shark ARM: use ARM_DMA_ZONE_SIZE to adjust the zone sizes 2011-05-12 08:36:53 +01:00
mach-shmobile ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
mach-spear3xx ARM: 6931/1: SPEAr3xx: Rework KConfig to allow all boards to be compiled in 2011-05-20 22:34:25 +01:00
mach-spear6xx ARM: 6934/1: SPEAr6xx: Rework Kconfig for single image solution 2011-05-20 22:34:25 +01:00
mach-tcc8k clocksource: convert ARM 32-bit up counting clocksources 2011-05-23 18:04:51 +01:00
mach-tegra Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 2011-05-25 16:55:55 -07:00
mach-u300 gpio: move U300 GPIO driver to drivers/gpio 2011-05-26 17:29:33 -06:00
mach-ux500 Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6 2011-05-28 10:56:34 -07:00
mach-versatile Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-vexpress Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
mach-vt8500
mach-w90x900 Merge branch 'devel-stable' into for-linus 2011-05-23 19:28:04 +01:00
mm Merge branches 'devel', 'devel-stable' and 'fixes' into for-linus 2011-05-27 22:59:57 +01:00
nwfpe
oprofile
plat-iop
plat-mxc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-05-23 15:15:27 -07:00
plat-nomadik gpio/nomadik: add function to read GPIO pull down status 2011-05-26 17:30:18 -06:00
plat-omap Merge branch 'for_2.6.40/gpio-move' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into gpio/next 2011-05-27 23:52:58 -06:00
plat-orion Merge branch 'devel-stable' into for-linus 2011-05-23 19:28:04 +01:00
plat-pxa
plat-s3c24xx Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
plat-s5p Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable 2011-05-25 21:47:48 +01:00
plat-samsung Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6 2011-05-28 10:56:34 -07:00
plat-spear Merge branches 'consolidate', 'ep93xx', 'fixes', 'misc', 'mmci', 'remove' and 'spear' into for-linus 2011-05-23 19:27:40 +01:00
plat-tcc
plat-versatile ARM: consolidate SMP cross call implementation 2011-05-23 16:53:17 +01:00
tools ARM: Update mach-types 2011-05-14 21:36:55 +01:00
vfp
Kconfig ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
Kconfig-nommu
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Makefile Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable 2011-05-25 21:47:48 +01:00