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| author |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-07 11:00:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-07 11:00:46 -0800 |
| commit | fa2dd441df28b9fdfc68f84ae66f1b507cfff0e4 (patch) | |
| tree | ebef1a5e5834c9569b4f913e5c61a91e8ce093a0 | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6 (diff) | |
| parent | sched: enable early use of sched_clock() (diff) | |
| download | linux-dev-fa2dd441df28b9fdfc68f84ae66f1b507cfff0e4.tar.xz linux-dev-fa2dd441df28b9fdfc68f84ae66f1b507cfff0e4.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
sched: enable early use of sched_clock()
lockdep: make cli/sti annotation warnings clearer
| -rw-r--r-- | kernel/lockdep.c | 13 | ||||
| -rw-r--r-- | kernel/sched.c | 7 |
2 files changed, 15 insertions, 5 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 0f389621bb6b..723bd9f92556 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2654,10 +2654,15 @@ static void check_flags(unsigned long flags) if (!debug_locks) return; - if (irqs_disabled_flags(flags)) - DEBUG_LOCKS_WARN_ON(current->hardirqs_enabled); - else - DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled); + if (irqs_disabled_flags(flags)) { + if (DEBUG_LOCKS_WARN_ON(current->hardirqs_enabled)) { + printk("possible reason: unannotated irqs-off.\n"); + } + } else { + if (DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled)) { + printk("possible reason: unannotated irqs-on.\n"); + } + } /* * We dont accurately track softirq state in e.g. diff --git a/kernel/sched.c b/kernel/sched.c index 67d9d1799d86..c6e551de795b 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -488,7 +488,12 @@ unsigned long long cpu_clock(int cpu) local_irq_save(flags); rq = cpu_rq(cpu); - update_rq_clock(rq); + /* + * Only call sched_clock() if the scheduler has already been + * initialized (some code might call cpu_clock() very early): + */ + if (rq->idle) + update_rq_clock(rq); now = rq->clock; local_irq_restore(flags); |