linux-sg2042/arch/m32r/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
..
Makefile [PATCH] m32r: Support M3A-2170(Mappi-III) platform 2005-06-21 19:07:30 -07:00
align.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asm-offsets.c kbuild: frv,m32r,sparc64 introduce fake asm-offsets.h file 2005-09-09 22:47:53 +02:00
entry.S [PATCH] m32r: remove unused instructions 2005-10-30 17:37:15 -08:00
head.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io_m32700ut.c [PATCH] m32r: SMC91x driver update 2005-10-30 17:37:16 -08:00
io_mappi.c [PATCH] m32r: NONCACHE_OFFSET in _port2addr 2005-10-30 17:37:16 -08:00
io_mappi2.c [PATCH] m32r: SMC91x driver update 2005-10-30 17:37:16 -08:00
io_mappi3.c [PATCH] m32r: SMC91x driver update 2005-10-30 17:37:16 -08:00
io_oaks32r.c [PATCH] m32r: NONCACHE_OFFSET in _port2addr 2005-10-30 17:37:16 -08:00
io_opsput.c [PATCH] m32r: SMC91x driver update 2005-10-30 17:37:16 -08:00
io_usrv.c [PATCH] m32r: NONCACHE_OFFSET in _port2addr 2005-10-30 17:37:16 -08:00
irq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
m32r_ksyms.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
process.c [PATCH] sched: disable preempt in idle tasks 2005-11-09 07:56:33 -08:00
ptrace.c [PATCH] unify sys_ptrace prototype 2005-10-30 17:37:20 -08:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c [PATCH] m32r: fix #if warnings 2005-10-30 17:37:15 -08:00
setup_m32700ut.c Create platform_device.h to contain all the platform device details. 2005-10-29 19:07:23 +01:00
setup_mappi.c Create platform_device.h to contain all the platform device details. 2005-10-29 19:07:23 +01:00
setup_mappi2.c Create platform_device.h to contain all the platform device details. 2005-10-29 19:07:23 +01:00
setup_mappi3.c Create platform_device.h to contain all the platform device details. 2005-10-29 19:07:23 +01:00
setup_oaks32r.c [PATCH] m32r: framebuffer device support 2005-07-07 18:24:11 -07:00
setup_opsput.c Create platform_device.h to contain all the platform device details. 2005-10-29 19:07:23 +01:00
setup_usrv.c [PATCH] m32r: Update setup_xxxxx.c 2005-06-21 19:07:30 -07:00
signal.c [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
smp.c [PATCH] m32r: Fix smp.c for preempt kernel 2005-10-14 17:10:12 -07:00
smpboot.c [PATCH] sched: disable preempt in idle tasks 2005-11-09 07:56:33 -08:00
sys_m32r.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
time.c [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
traps.c [PATCH] m32r: trap handler code for illegal traps 2005-10-11 09:46:54 -07:00
vmlinux.lds.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00