Paul E. McKenney c4f3060843 sched: Add is_idle_task() to handle invalidated uses of idle_cpu() ... Commit 908a3283 (Fix idle_cpu()) invalidated some uses of idle_cpu(), which used to say whether or not the CPU was running the idle task, but now instead says whether or not the CPU is running the idle task in the absence of pending wakeups. Although this new implementation gives a better answer to the question "is this CPU idle?", it also invalidates other uses that were made of idle_cpu(). This commit therefore introduces a new is_idle_task() API member that determines whether or not the specified task is one of the idle tasks, allowing open-coded "->pid == 0" sequences to be replaced by something more meaningful. Suggested-by: Josh Triplett <josh@joshtriplett.org> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>		2011-12-11 10:31:47 -08:00
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acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2011-11-07 10:13:52 -08:00
asm-generic	asm-generic/unistd.h: support new process_vm_{readv,write} syscalls	2011-12-03 15:31:48 -05:00
crypto	…
drm	drm/radeon/kms: add some new pci ids	2011-12-01 16:34:15 +00:00
keys	…
linux	sched: Add is_idle_task() to handle invalidated uses of idle_cpu()	2011-12-11 10:31:47 -08:00
math-emu	…
media	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
misc	…
mtd	…
net	sch_red: fix red_calc_qavg_from_idle_time	2011-11-30 23:27:22 -05:00
pcmcia	…
rdma	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-11-01 10:51:38 -07:00
rxrpc	…
scsi	…
sound	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
target	target: remove the unused se_dev_list	2011-12-06 06:00:57 +00:00
trace	rcu: Deconfuse dynticks entry-exit tracing	2011-12-11 10:31:42 -08:00
video	ARM: OMAP: HWMOD: Unify DSS resets for OMAPs	2011-11-08 03:16:13 -07:00
xen	xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI	2011-11-16 12:13:42 -05:00
Kbuild	…