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13ea9cc821
linux/arch/arm
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Santosh Shilimkar 13ea9cc821 ARM: 6066/1: Fix "BUG: scheduling while atomic: swapper/0/0x00000002 
This patch fixes the preempt leak in the cpuidle path invoked from
cpu-hotplug. The fix is suggested by Russell King and is based
on x86 idea of calling init_idle() on the idle task when it's
re-used which also resets the preempt count amongst other things

dump:
BUG: scheduling while atomic: swapper/0/0x00000002
Modules linked in:
Backtrace:
[<c0024f90>] (dump_backtrace+0x0/0x110) from [<c0173bc4>] (dump_stack+0x18/0x1c)
 r7:c02149e4 r6:c033df00 r5:c7836000 r4:00000000
[<c0173bac>] (dump_stack+0x0/0x1c) from [<c003b4f0>] (__schedule_bug+0x60/0x70)
[<c003b490>] (__schedule_bug+0x0/0x70) from [<c0174214>] (schedule+0x98/0x7b8)
 r5:c7836000 r4:c7836000
[<c017417c>] (schedule+0x0/0x7b8) from [<c00228c4>] (cpu_idle+0xb4/0xd4)
# [<c0022810>] (cpu_idle+0x0/0xd4) from [<c0171dd8>] (secondary_start_kernel+0xe0/0xf0)
 r5:c7836000 r4:c0205f40
[<c0171cf8>] (secondary_start_kernel+0x0/0xf0) from [<c002d57c>] (prm_rmw_mod_reg_bits+0x88/0xa4)
 r7:c02149e4 r6:00000001 r5:00000001 r4:c7836000
Backtrace aborted due to bad frame pointer <c7837fbc>

Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-05-01 11:32:57 +01:00
..
boot ARM: 6031/1: fix Thumb-2 decompressor 2010-04-07 21:11:29 +01:00
common include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
configs Merge master.kernel.org:/home/rmk/linux-2.6-arm 2010-04-29 17:17:35 -07:00
include/asm ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
kernel ARM: 6066/1: Fix "BUG: scheduling while atomic: swapper/0/0x00000002 2010-05-01 11:32:57 +01:00
lib ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
mach-aaec2000 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-at91 ARM: 5974/1: arm/mach-at91 Makefile: remove two blanks. 2010-04-14 11:22:44 +01:00
mach-bcmring ARM: 6024/1: bcmring: fix missing down on semaphore in dma.c 2010-04-07 21:11:27 +01:00
mach-clps711x ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
mach-davinci Merge branch 'davinci-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci 2010-04-07 11:03:06 -07:00
mach-dove Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-ebsa110 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
mach-ep93xx ARM: 6029/1: ep93xx: gpio.c: local functions should be static 2010-04-07 21:11:28 +01:00
mach-footbridge Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
mach-gemini Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-03-01 09:15:15 -08:00
mach-h720x include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-integrator include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-iop13xx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-iop32x include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-iop33x include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ixp4xx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ixp23xx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ixp2000 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-kirkwood include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ks8695 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
mach-l7200 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
mach-lh7a40x include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-loki Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
mach-mmp [ARM] mmp: fix for variables in uncompress.h being discarded 2010-03-22 12:03:05 +08:00
mach-msm Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
mach-mv78xx0 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-mx1 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-mx2 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-mx3 Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 2010-04-08 10:47:05 +01:00
mach-mx5 i.MX51: remove NFC AXI static mapping 2010-03-19 11:18:27 +01:00
mach-mx25 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-mxc91231 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-netx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-nomadik include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ns9xxx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-nuc93x ARM: 5859/1: Add nuc93x platform support 2010-01-27 22:03:00 +00:00
mach-omap1 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2010-04-27 08:27:26 -07:00
mach-omap2 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2010-04-27 08:27:26 -07:00
mach-orion5x include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-pnx4008 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-pxa include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-realview ARM: 5957/1: ARM: RealView SD/MMC Card detection and write-protect using GPIOLIB 2010-04-28 22:21:52 +01:00
mach-rpc include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-s3c24a0/include/mach Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-s3c64xx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-s3c2400 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
mach-s3c2410 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-03-12 16:04:50 -08:00
mach-s3c2412 ARM: SAMSUNG: Remove dma-plat.h to allow plat-s3c64xx to be removed 2010-02-21 23:10:35 +00:00
mach-s3c2440 ARM: S3C2440: Fix s3c2440 cpufreq compilation post move. 2010-03-15 22:43:12 +00:00
mach-s3c2443 ARM: Merge next-samsung-s3c2443-clock 2010-03-07 22:56:19 +00:00
mach-s5p6440 ARM: SAMSUNG: Fixup commit 4e6d488af3 2010-03-15 23:11:41 +00:00
mach-s5p6442 ARM: SAMSUNG: Fixup commit 4e6d488af3 2010-03-15 23:11:41 +00:00
mach-s5pc100 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-03-12 16:04:50 -08:00
mach-s5pv210 Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
mach-sa1100 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-shark ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
mach-shmobile ARM: mach-shmobile: ap4evb SDHI0 platform data V2 2010-03-15 12:06:47 +09:00
mach-stmp37xx
mach-stmp378x
mach-u300 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-ux500 Merge branch 'master' into for-linus 2010-03-08 20:24:11 +00:00
mach-versatile include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mach-w90x900 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mm ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
nwfpe ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
oprofile ARM: 5901/2: arm/oprofile: reserve the PMU when starting 2010-02-12 17:23:43 +00:00
plat-iop ARM: Add caller information to ioremap 2010-02-15 21:39:11 +00:00
plat-mxc Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 2010-04-08 10:47:05 +01:00
plat-nomadik Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00
plat-omap musb: fix power field to hold all possible values 2010-04-30 09:25:07 -07:00
plat-orion [ARM] Orion: fix PCIe inbound window programming when RAM size is not a power of two 2009-12-28 23:50:49 -05:00
plat-pxa include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
plat-s3c24xx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
plat-s5p ARM: S5PV210: Update Kconfig and Makefiles 2010-02-24 22:47:23 +00:00
plat-s5pc1xx ARM: SAMSUNG: Remove empty gpio-core.h and use central plat/gpio-core.h 2010-01-19 18:46:02 +09:00
plat-samsung include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
plat-stmp3xxx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tools ARM: Update mach-types 2010-03-20 15:37:39 +00:00
vfp ARM: 6050/1: VFP: fix the SMP versions of vfp_{sync,flush}_hwstate 2010-04-14 11:11:30 +01:00
Kconfig ARM: 5957/1: ARM: RealView SD/MMC Card detection and write-protect using GPIOLIB 2010-04-28 22:21:52 +01:00
Kconfig-nommu
Kconfig.debug ARM: SAMSUNG: Move plat-s3c Kconfig entries to plat-samsung and plat-s3c24xx 2010-02-24 01:52:06 +00:00
Makefile Merge branch 'origin' into devel-stable 2010-03-08 20:21:04 +00:00