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kernel_optimize_test/arch/arm
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Matt Helsley 38a81da220 perf events: Clean up pid passing 
The kernel perf event creation path shouldn't use find_task_by_vpid()
because a vpid exists in a specific namespace. find_task_by_vpid() uses
current's pid namespace which isn't always the correct namespace to use
for the vpid in all the places perf_event_create_kernel_counter() (and
thus find_get_context()) is called.

The goal is to clean up pid namespace handling and prevent bugs like:

	https://bugzilla.kernel.org/show_bug.cgi?id=17281

Instead of using pids switch find_get_context() to use task struct
pointers directly. The syscall is responsible for resolving the pid to
a task struct. This moves the pid namespace resolution into the syscall
much like every other syscall that takes pid parameters.

Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robin Green <greenrd@greenrd.org>
Cc: Prasad <prasad@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
LKML-Reference: <a134e5e392ab0204961fd1a62c84a222bf5874a9.1284407763.git.matthltc@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-09-15 10:44:00 +02:00
..
boot ARM: Partially revert "Auto calculate ZRELADDR and provide option for exceptions" 2010-09-09 22:39:41 +01:00
common Revert "[ARM] pxa: remove now unnecessary dma_needs_bounce()" 2010-09-08 12:28:39 +01:00
configs omap: Fix omap_4430sdp_defconfig for make oldconfig 2010-08-16 09:22:04 +03:00
include/asm Revert "[ARM] pxa: remove now unnecessary dma_needs_bounce()" 2010-09-08 12:28:39 +01:00
kernel Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core 2010-09-15 10:27:31 +02:00
lib
mach-aaec2000
mach-at91 AT91: at91sam9261ek: remove C99 comments but keep information 2010-09-10 14:36:06 +02:00
mach-bcmring
mach-clps711x ARM: 6283/1: Remove useless PCIO_BASE definitions 2010-08-05 10:35:49 +01:00
mach-cns3xxx
mach-davinci Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci 2010-08-08 10:00:55 -07:00
mach-dove
mach-ebsa110
mach-ep93xx ARM: 6359/1: ep93xx: move clock initialization earlier 2010-09-08 12:28:39 +01:00
mach-footbridge
mach-gemini
mach-h720x ARM: 6283/1: Remove useless PCIO_BASE definitions 2010-08-05 10:35:49 +01:00
mach-imx ARM: imx: fix build failure concerning otg/ulpi 2010-08-23 20:50:17 -07:00
mach-integrator ARM: 6283/1: Remove useless PCIO_BASE definitions 2010-08-05 10:35:49 +01:00
mach-iop13xx
mach-iop32x
mach-iop33x
mach-ixp4xx Merge git://git.infradead.org/mtd-2.6 2010-08-15 17:32:47 -07:00
mach-ixp23xx ARM: 6283/1: Remove useless PCIO_BASE definitions 2010-08-05 10:35:49 +01:00
mach-ixp2000
mach-kirkwood Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-08-07 17:07:31 -07:00
mach-ks8695
mach-lh7a40x
mach-loki
mach-lpc32xx
mach-mmp
mach-msm Merge branch 'msm-core' of git://codeaurora.org/quic/kernel/dwalker/linux-msm 2010-08-12 10:07:32 -07:00
mach-mv78xx0
mach-mx3 Merge branch 'imx-for-2.6.36' of git://git.pengutronix.de/git/imx/linux-2.6 2010-09-01 10:08:50 +01:00
mach-mx5 mx5/clock: fix clear bit fields issue in _clk_ccgr_disable function 2010-08-21 12:22:43 +02:00
mach-mx25 Merge branch 'imx-for-2.6.36' of git://git.pengutronix.de/git/imx/linux-2.6 2010-09-01 10:08:50 +01:00
mach-mxc91231
mach-netx
mach-nomadik
mach-ns9xxx
mach-nuc93x
mach-omap1
mach-omap2 OMAP3: PM: ensure IO wakeups are properly disabled 2010-08-16 09:22:05 +03:00
mach-orion5x ARM: Fix gen_nand probe structures contents 2010-08-12 02:21:18 +01:00
mach-pnx4008
mach-pxa ARM: pxa: fix CI_HSYNC and CI_VSYNC MFP defines for pxa300 2010-08-30 09:59:43 +08:00
mach-realview
mach-rpc
mach-s3c24a0/include/mach
mach-s3c64xx ARM: SAMSUNG: Fix on build warning regarding VMALLOC_END type 2010-08-27 15:28:38 +09:00
mach-s3c2400
mach-s3c2410 ARM: SAMSUNG: Fix on build warning regarding VMALLOC_END type 2010-08-27 15:28:38 +09:00
mach-s3c2412
mach-s3c2416 s3c-fb: add device name initialization 2010-08-11 08:59:10 -07:00
mach-s3c2440 panic: keep blinking in spite of long spin timer mode 2010-08-11 08:59:22 -07:00
mach-s3c2443 s3c-fb: add device name initialization 2010-08-11 08:59:10 -07:00
mach-s5p6440 ARM: SAMSUNG: Fix on build warning regarding VMALLOC_END type 2010-08-27 15:28:38 +09:00
mach-s5p6442 ARM: SAMSUNG: Fix on build warning regarding VMALLOC_END type 2010-08-27 15:28:38 +09:00
mach-s5pc100 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-08-11 09:13:19 -07:00
mach-s5pv210 ARM: S5P: VMALLOC_END should be unsigned long 2010-08-23 10:50:36 +09:00
mach-s5pv310 ARM: S5PV310: Fix on Secondary CPU startup 2010-08-27 18:29:58 +09:00
mach-sa1100 Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable 2010-08-06 18:10:25 +01:00
mach-shark
mach-shmobile ARM: mach-shmobile: ap4evb: fix write protect for SDHI1 2010-08-20 20:41:23 +09:00
mach-spear3xx
mach-spear6xx
mach-stmp37xx
mach-stmp378x
mach-tegra arm: tegra: VMALLOC_END should be unsigned long 2010-08-22 12:54:23 -07:00
mach-u300 ARM: 6297/1: move U300 timer to dynamic clock lookup 2010-08-10 22:10:56 +01:00
mach-ux500 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-08-09 21:00:07 -07:00
mach-versatile ARM: 6282/1: Remove useless definitions from versatile hardware.h 2010-08-05 10:35:49 +01:00
mach-vexpress
mach-w90x900 i2c/nuc900: add i2c driver support for nuc900 2010-08-11 00:34:38 +01:00
mm ARM: Ensure PTE modifications via dma_alloc_coherent are visible 2010-09-08 16:27:56 +01:00
nwfpe
oprofile perf events: Clean up pid passing 2010-09-15 10:44:00 +02:00
plat-iop
plat-mxc ARM: imx: set cache line size to 64 bytes for i.MX5 2010-08-21 12:22:43 +02:00
plat-nomadik Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-08-09 21:00:07 -07:00
plat-omap omap: Fix sev instruction usage for multi-omap 2010-08-16 09:22:04 +03:00
plat-orion Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-08-07 17:07:31 -07:00
plat-pxa ARM: pxa: Make id const in pwm_probe() 2010-08-30 09:59:44 +08:00
plat-s3c24xx
plat-s5p ARM: S5PV310: Fix on Secondary CPU startup 2010-08-27 18:29:58 +09:00
plat-samsung s5pc110: SDHCI-s3c can override host capabilities 2010-08-20 09:34:55 -07:00
plat-spear
plat-stmp3xxx
plat-versatile
tools ARM: Update mach-types 2010-09-09 22:49:26 +01:00
vfp
Kconfig ARM: Partially revert "Auto calculate ZRELADDR and provide option for exceptions" 2010-09-09 22:39:41 +01:00
Kconfig-nommu
Kconfig.debug
Makefile ARM: 6328/1: Build with -fno-dwarf2-cfi-asm 2010-08-14 23:58:43 +01:00