Konstantin Khlebnikov 98197d3de5 sched/preempt: Fix cond_resched_lock() and cond_resched_softirq() ... commit fe32d3cd5e upstream. These functions check should_resched() before unlocking spinlock/bh-enable: preempt_count always non-zero => should_resched() always returns false. cond_resched_lock() worked iff spin_needbreak is set. This patch adds argument "preempt_offset" to should_resched(). preempt_count offset constants for that: PREEMPT_DISABLE_OFFSET - offset after preempt_disable() PREEMPT_LOCK_OFFSET - offset after spin_lock() SOFTIRQ_DISABLE_OFFSET - offset after local_bh_distable() SOFTIRQ_LOCK_OFFSET - offset after spin_lock_bh() Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Graf <agraf@suse.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: bdb4380658 ("sched: Extract the basic add/sub preempt_count modifiers") Link: http://lkml.kernel.org/r/20150715095204.12246.98268.stgit@buzz Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2015-10-27 09:51:58 +09:00
..
Makefile	ftrace: allow architectures to specify ftrace compile options	2015-01-29 09:19:19 +01:00
auto_group.c	sched/autogroup: Fix failure to set cpu.rt_runtime_us	2015-02-18 16:17:20 +01:00
auto_group.h	Revert "sched/autogroup: Fix crash on reboot when autogroup is disabled"	2012-12-11 10:23:45 +01:00
clock.c	kernel/sched/clock.c: add another clock for use with the soft lockup watchdog	2015-02-12 18:54:13 -08:00
completion.c	sched/completion: Serialize completion_done() with complete()	2015-02-18 14:27:40 +01:00
core.c	sched/preempt: Fix cond_resched_lock() and cond_resched_softirq()	2015-10-27 09:51:58 +09:00
cpuacct.c	cgroup: rename cgroup_subsys->base_cftypes to ->legacy_cftypes	2014-07-15 11:05:09 -04:00
cpuacct.h	sched/cpuacct: Initialize root cpuacct earlier	2013-04-10 13:54:20 +02:00
cpudeadline.c	sched/deadline: Remove cpu_active_mask from cpudl_find()	2015-02-04 07:52:29 +01:00
cpudeadline.h	sched/deadline: Modify cpudl::free_cpus to reflect rd->online	2015-01-30 19:39:16 +01:00
cpupri.c	Merge commit '3cf2f34' into sched/core, to fix build error	2014-06-12 13:46:37 +02:00
cpupri.h	sched/cpupri: Remove unnecessary definitions in cpupri.h	2014-11-16 10:58:59 +01:00
cputime.c	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
deadline.c	sched/deadline: Support DL task migration during CPU hotplug	2015-04-02 17:42:57 +02:00
debug.c	sched: Track group sched_entity usage contributions	2015-03-27 09:35:58 +01:00
fair.c	sched/fair: Prevent throttling in early pick_next_task_fair()	2015-10-22 14:43:20 -07:00
features.h	sched/rt: Use IPI to trigger RT task push migration instead of pulling	2015-03-23 10:55:22 +01:00
idle.c	cpuidle: Run tick_broadcast_exit() with disabled interrupts	2015-04-29 15:19:21 +02:00
idle_task.c	sched: Provide update_curr callbacks for stop/idle scheduling classes	2014-11-23 14:14:40 -08:00
proc.c	cpuidle: menu: Lookup CPU runqueues less	2014-08-06 21:17:45 +02:00
rt.c	sched/core: Remove unused argument from init_[rt|dl]_rq()	2015-04-02 17:42:55 +02:00
sched.h	sched/core: Fix TASK_DEAD race in finish_task_switch()	2015-10-22 14:43:14 -07:00
stats.c	sched: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:37 -08:00
stats.h	sched: Micro-optimize by dropping unnecessary task_rq() calls	2013-09-25 13:51:06 +02:00
stop_task.c	sched: Provide update_curr callbacks for stop/idle scheduling classes	2014-11-23 14:14:40 -08:00
wait.c	sched/wait: Fix a kthread race with wait_woken()	2014-11-04 07:17:44 +01:00