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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-23 19:36:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-23 19:36:53 -0700
commit7f9dce38378f0a4a298e885553d6bb7121376376 (patch)
tree5bfd688c9f356f7216bbc3cef3b4c10153de334b /include/linux/cpumask.h
parent26dcce0fabbef75ae426461edf21b5030bad60f3 (diff)
parentba42059fbd0aa1ac91b582412b5fedb1258f241f (diff)
Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: hrtick_enabled() should use cpu_active() sched, x86: clean up hrtick implementation sched: fix build error, provide partition_sched_domains() unconditionally sched: fix warning in inc_rt_tasks() to not declare variable 'rq' if it's not needed cpu hotplug: Make cpu_active_map synchronization dependency clear cpu hotplug, sched: Introduce cpu_active_map and redo sched domain managment (take 2) sched: rework of "prioritize non-migratable tasks over migratable ones" sched: reduce stack size in isolated_cpu_setup() Revert parts of "ftrace: do not trace scheduler functions" Fixed up conflicts in include/asm-x86/thread_info.h (due to the TIF_SINGLESTEP unification vs TIF_HRTICK_RESCHED removal) and kernel/sched_fair.c (due to cpu_active_map vs for_each_cpu_mask_nr() introduction).
Diffstat (limited to 'include/linux/cpumask.h')
-rw-r--r--include/linux/cpumask.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 30d59d1d062..1b5c98e7fef 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -458,13 +458,14 @@ int __next_cpu_nr(int n, const cpumask_t *srcp);
/*
* The following particular system cpumasks and operations manage
- * possible, present and online cpus. Each of them is a fixed size
+ * possible, present, active and online cpus. Each of them is a fixed size
* bitmap of size NR_CPUS.
*
* #ifdef CONFIG_HOTPLUG_CPU
* cpu_possible_map - has bit 'cpu' set iff cpu is populatable
* cpu_present_map - has bit 'cpu' set iff cpu is populated
* cpu_online_map - has bit 'cpu' set iff cpu available to scheduler
+ * cpu_active_map - has bit 'cpu' set iff cpu available to migration
* #else
* cpu_possible_map - has bit 'cpu' set iff cpu is populated
* cpu_present_map - copy of cpu_possible_map
@@ -515,6 +516,7 @@ int __next_cpu_nr(int n, const cpumask_t *srcp);
extern cpumask_t cpu_possible_map;
extern cpumask_t cpu_online_map;
extern cpumask_t cpu_present_map;
+extern cpumask_t cpu_active_map;
#if NR_CPUS > 1
#define num_online_cpus() cpus_weight_nr(cpu_online_map)
@@ -523,6 +525,7 @@ extern cpumask_t cpu_present_map;
#define cpu_online(cpu) cpu_isset((cpu), cpu_online_map)
#define cpu_possible(cpu) cpu_isset((cpu), cpu_possible_map)
#define cpu_present(cpu) cpu_isset((cpu), cpu_present_map)
+#define cpu_active(cpu) cpu_isset((cpu), cpu_active_map)
#else
#define num_online_cpus() 1
#define num_possible_cpus() 1
@@ -530,6 +533,7 @@ extern cpumask_t cpu_present_map;
#define cpu_online(cpu) ((cpu) == 0)
#define cpu_possible(cpu) ((cpu) == 0)
#define cpu_present(cpu) ((cpu) == 0)
+#define cpu_active(cpu) ((cpu) == 0)
#endif
#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))