Peter Zijlstra 80ed87c8a9 sched/wait: Introduce TASK_NOLOAD and TASK_IDLE ... Currently people use TASK_INTERRUPTIBLE to idle kthreads and wait for 'work' because TASK_UNINTERRUPTIBLE contributes to the loadavg. Having all idle kthreads contribute to the loadavg is somewhat silly. Now mostly this works OK, because kthreads have all their signals masked. However there's a few sites where this is causing problems and TASK_UNINTERRUPTIBLE should be used, except for that loadavg issue. This patch adds TASK_NOLOAD which, when combined with TASK_UNINTERRUPTIBLE avoids the loadavg accounting. As most of imagined usage sites are loops where a thread wants to idle, waiting for work, a helper TASK_IDLE is introduced. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Julian Anastasov <ja@ssi.bg> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: NeilBrown <neilb@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-05-19 08:39:18 +02:00
..
9p.h	net/9p/tracing: Export enums in tracepoints to userspace	2015-04-08 09:39:59 -04:00
asoc.h	ASoC: Remove snd_soc_cache_sync() implementation	2014-11-09 09:06:30 +00:00
bcache.h	bcache: fix crash in bcache_btree_node_alloc_fail tracepoint	2014-08-04 15:23:03 -07:00
block.h	blktrace: fix accounting of partially completed requests	2014-03-05 16:11:21 -07:00
btrfs.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
clk.h	clk: Add tracepoints for hardware operations	2015-03-12 12:18:51 -07:00
cma.h	mm: cma: add trace events for CMA allocations and freeings	2015-04-15 16:35:19 -07:00
compaction.h	mm/compaction: add tracepoint to observe behaviour of compaction defer	2015-02-11 17:06:04 -08:00
context_tracking.h	context_tracking: User/kernel broundary cross trace events	2013-08-14 17:14:48 +02:00
ext3.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
ext4.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
f2fs.h	Merge tag 'for-f2fs-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs	2015-04-18 11:17:20 -04:00
fence.h	fence: dma-buf cross-device synchronization (v18)	2014-07-08 12:18:56 -07:00
filelock.h	locks: generic_delete_lease doesn't need a file_lock at all	2014-10-07 14:06:12 -04:00
filemap.h	tracing, mm: Record pfn instead of pointer to struct page	2015-04-13 11:44:52 -03:00
gfpflags.h	mm: get rid of __GFP_KMEMCG	2014-06-04 16:53:56 -07:00
gpio.h
host1x.h	gpu: host1x: Use struct host1x_bo pointers in traces	2014-11-13 16:11:32 +01:00
hswadsp.h	Merge remote-tracking branches 'asoc/topic/ml26124', 'asoc/topic/of', 'asoc/topic/omap', 'asoc/topic/pxa' and 'asoc/topic/rcar' into asoc-next	2014-03-12 23:04:35 +00:00
i2c.h	i2c: Add message transfer tracepoints for SMBUS [ver #2]	2014-03-13 22:15:07 +01:00
intel-sst.h	tracing: Add TRACE_SYSTEM_VAR to intel-sst	2015-04-07 12:31:12 -04:00
iommu.h	iommu: Change trace unmap api to report unmapped size	2015-01-19 15:19:31 +01:00
ipi.h	tracepoint: add generic tracepoint definitions for IPI tracing	2014-08-07 20:40:40 -04:00
irq.h	irq/tracing: Export enums in tracepoints to user space	2015-04-08 09:40:00 -04:00
jbd2.h	jbd2: trace when lock_buffer in do_get_write_access takes a long time	2013-04-21 16:47:54 -04:00
jbd.h	jbd: Write journal superblock with WRITE_FUA after checkpointing	2012-05-15 23:34:37 +02:00
kmem.h	tracing, mm: Record pfn instead of pointer to struct page	2015-04-13 11:44:52 -03:00
kvm.h	Fairly small update, but there are some interesting new features.	2015-02-13 09:55:09 -08:00
libata.h	libata: Add tracepoints	2015-03-27 11:59:22 -04:00
lock.h
mce.h
migrate.h	mm: tracing: Export enums in tracepoints to user space	2015-04-08 09:40:01 -04:00
module.h	tracing: %pF is only for function pointers	2015-03-25 08:57:22 -04:00
napi.h
net.h	net: rename vlan_tx_* helpers since "tx" is misleading there	2015-01-13 17:51:08 -05:00
nmi.h	x86: Add NMI duration tracepoints	2013-06-23 11:52:58 +02:00
oom.h	mm, oom: change type of oom_score_adj to short	2012-12-11 17:22:27 -08:00
pagemap.h	mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated	2014-08-06 18:01:20 -07:00
power_cpu_migrate.h	ARM: bL_switcher/trace: Add trace trigger for trace bootstrapping	2013-09-23 18:47:30 -04:00
power.h	PM / sleep: trace events for device PM callbacks	2014-06-11 02:16:48 +02:00
printk.h	printk/tracing: rework console tracing	2013-04-29 18:28:13 -07:00
random.h	tracing: %pF is only for function pointers	2015-03-25 08:57:22 -04:00
rcu.h	rcu: Remove redundant TREE_PREEMPT_RCU config option	2014-10-29 10:20:05 -07:00
regulator.h
rpm.h	device.h: audit and cleanup users in main include dir	2012-03-16 10:38:24 -04:00
sched.h	sched/wait: Introduce TASK_NOLOAD and TASK_IDLE	2015-05-19 08:39:18 +02:00
scsi.h	scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16	2014-11-24 20:01:40 +01:00
signal.h	tracing: let trace_signal_generate() report more info, kill overflow_fail/lose_info	2012-01-13 18:48:50 +01:00
skb.h
sock.h	core: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
spi.h	spi: Provide common spi_message processing loop	2013-10-11 20:09:50 +01:00
sunrpc.h	SUNRPC: Export enums in tracepoints to user space	2015-04-08 09:41:08 -04:00
swiotlb.h	tracing/events: Add bounce tracing to swiotbl	2013-10-02 12:53:26 -04:00
syscalls.h	tracepoint: Fix sparse warnings in tracepoint.c	2014-04-09 10:12:11 -04:00
target.h	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-18 05:56:29 -08:00
task.h	exec: kill bprm->tcomm[], simplify the "basename" logic	2014-04-07 16:36:05 -07:00
thermal.h	thermal: trace: Trace when temperature is above a trip point	2014-07-29 09:28:43 -04:00
thp.h	powerpc/thp: Add tracepoints to track hugepage invalidate	2014-08-13 18:20:42 +10:00
timer.h	Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-05-05 13:23:27 -07:00
tlb.h	x86/tlb/trace: Export enums in used by tlb_flush tracepoint	2015-04-08 09:39:58 -04:00
udp.h	udp: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
v4l2.h	v4l: Export enums used by tracepoints to user space	2015-04-08 10:58:25 -04:00
vmscan.h	tracing, mm: Record pfn instead of pointer to struct page	2015-04-13 11:44:52 -03:00
workqueue.h	workqueue: rename cpu_workqueue to pool_workqueue	2013-02-13 19:29:12 -08:00
writeback.h	writeback: Export enums used by tracepoint to user space	2015-04-08 10:58:35 -04:00
xen.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00