android_kernel_samsung_msm8976/arch/ppc/kernel
Nick Piggin 5bfb5d690f [PATCH] sched: disable preempt in idle tasks
Run idle threads with preempt disabled.

Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()).
How did it ever work before?

Might fix the CPU hotplugging hang which Nigel Cunningham noted.

We think the bug hits if the idle thread is preempted after checking
need_resched() and before going to sleep, then the CPU offlined.

After calling stop_machine_run, the CPU eventually returns from preemption and
into the idle thread and goes to sleep.  The CPU will continue executing
previous idle and have no chance to call play_dead.

By disabling preemption until we are ready to explicitly schedule, this bug is
fixed and the idle threads generally become more robust.

From: alexs <ashepard@u.washington.edu>

  PPC build fix

From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>

  MIPS build fix

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:33 -08:00
..
align.c [PATCH] powerpc: Fix handling of fpscr on 64-bit 2005-10-27 20:48:50 +10:00
asm-offsets.c [PATCH] powerpc: Merge thread_info.h 2005-10-21 22:47:23 +10:00
cpu_setup_6xx.S ppc32: use L1_CACHE_SHIFT/L1_CACHE_BYTES 2005-10-17 11:50:32 +10:00
cpu_setup_power4.S ppc32: use L1_CACHE_SHIFT/L1_CACHE_BYTES 2005-10-17 11:50:32 +10:00
dma-mapping.c [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
entry.S [PATCH] powerpc: Merge thread_info.h 2005-10-21 22:47:23 +10:00
head.S ppc32: use L1_CACHE_SHIFT/L1_CACHE_BYTES 2005-10-17 11:50:32 +10:00
head_4xx.S [PATCH] ppc32: replace use of _GLOBAL with .globl for ppc32 2005-10-20 09:43:34 +10:00
head_8xx.S powerpc: merge idle_power4.S and trapc.s 2005-10-01 18:43:42 +10:00
head_44x.S [PATCH] ppc32: Allow ERPN for early serial to depend on CPU type 2005-11-07 07:53:26 -08:00
head_booke.h powerpc: merge idle_power4.S and trapc.s 2005-10-01 18:43:42 +10:00
head_fsl_booke.S [PATCH] ppc32: replace use of _GLOBAL with .globl for ppc32 2005-10-20 09:43:34 +10:00
idle.c [PATCH] sched: disable preempt in idle tasks 2005-11-09 07:56:33 -08:00
idle_6xx.S kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support 2005-09-09 20:57:26 +02:00
idle_power4.S kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support 2005-09-09 20:57:26 +02:00
irq.c powerpc: Merge smp.c and smp.h 2005-11-05 10:33:55 +11:00
l2cr.S ppc32: use L1_CACHE_SHIFT/L1_CACHE_BYTES 2005-10-17 11:50:32 +10:00
machine_kexec.c powerpc: Merge asm-ppc/kexec.h and asm-ppc64/kexec.h 2005-11-03 15:35:45 +11:00
Makefile [PATCH] RapidIO support: ppc32 2005-11-07 07:53:47 -08:00
misc.S [PATCH] ppc32: handle access to non-present IO ports on 8xx 2005-11-07 12:37:12 +11:00
module.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.c [PATCH] ppc: make phys_mem_access_prot() work with pfns instead of addresses 2005-10-29 14:25:49 +10:00
perfmon_fsl_booke.c [PATCH] powerpc: Merge ppc64 pmc.[ch] with ppc32 perfmon.[ch] 2005-10-20 16:22:24 +10:00
ppc-stub.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ppc_htab.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ppc_ksyms.c [PATCH] ppc32 8xx: export symbols required for modular IDE 2005-11-03 16:56:53 +11:00
process.c [PATCH] ppc32: #ifdef out ALTIVEC specific code in __switch_to 2005-10-29 13:55:43 +10:00
relocate_kernel.S [PATCH] ppc32: use correct register names in arch/ppc/kernel/relocate_kernel.S 2005-06-30 08:45:09 -07:00
rio.c [PATCH] RapidIO support: ppc32 2005-11-07 07:53:47 -08:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c ppc: Various minor compile fixes 2005-10-11 22:08:12 +10:00
smp-tbsync.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.c [PATCH] sched: disable preempt in idle tasks 2005-11-09 07:56:33 -08:00
softemu8xx.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
swsusp.S kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support 2005-09-09 20:57:26 +02:00
temp.c [PATCH] ppc32: remove use of asm/segment.h 2005-09-13 08:22:28 -07:00
time.c Merge ../linux-2.6 by hand 2005-10-31 13:37:12 +11:00
traps.c [PATCH] ppc: Fix ARCH=ppc build with xmon 2005-11-08 11:19:48 +11:00
vmlinux.lds.S [PATCH] powerpc: Remove section free() and linker script bits 2005-09-19 09:38:49 +10:00