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
..
boards	Create platform_device.h to contain all the platform device details.	2005-10-29 19:07:23 +01:00
boot
cchips	[PATCH] gfp_t: dma-mapping (sh)	2005-10-28 08:16:48 -07:00
configs
drivers	[PATCH] sh: SuperHyway support for SH4-202	2005-11-07 07:53:28 -08:00
kernel	[PATCH] sched: disable preempt in idle tasks	2005-11-09 07:56:33 -08:00
lib
mm	[PATCH] sh: Use pfn_valid() for lazy dcache write-back on SH7705	2005-11-07 07:53:28 -08:00
oprofile
tools
Kconfig	[PATCH] sh: Drop hp690 discontig support	2005-11-07 07:53:28 -08:00
Kconfig.debug
Makefile	[PATCH] sh: Drop deprecated support for custom ramdisk embedding	2005-11-07 07:53:27 -08:00