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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-31 13:53:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-31 13:53:43 +0200 |
| commit | 7bee946358c3cb957d4aa648fc5ab3cad0b232d0 (patch) | |
| tree | 693061ebde2abc35ecc846e5084630d7225aaaff /kernel/lockdep.c | |
| parent | locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit] (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 (diff) | |
| download | linux-7bee946358c3cb957d4aa648fc5ab3cad0b232d0.tar.xz linux-7bee946358c3cb957d4aa648fc5ab3cad0b232d0.zip | |
Merge branch 'linus' into locking-for-linus
Conflicts:
lib/Kconfig.debug
Diffstat (limited to 'kernel/lockdep.c')
| -rw-r--r-- | kernel/lockdep.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 9a1e2bcc4b8d..981cd4854281 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2254,7 +2254,7 @@ void trace_softirqs_off(unsigned long ip) debug_atomic_inc(&redundant_softirqs_off); } -void lockdep_trace_alloc(gfp_t gfp_mask) +static void __lockdep_trace_alloc(gfp_t gfp_mask, unsigned long flags) { struct task_struct *curr = current; @@ -2273,12 +2273,29 @@ void lockdep_trace_alloc(gfp_t gfp_mask) if (!(gfp_mask & __GFP_FS)) return; - if (DEBUG_LOCKS_WARN_ON(irqs_disabled())) + if (DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags))) return; mark_held_locks(curr, RECLAIM_FS); } +static void check_flags(unsigned long flags); + +void lockdep_trace_alloc(gfp_t gfp_mask) +{ + unsigned long flags; + + if (unlikely(current->lockdep_recursion)) + return; + + raw_local_irq_save(flags); + check_flags(flags); + current->lockdep_recursion = 1; + __lockdep_trace_alloc(gfp_mask, flags); + current->lockdep_recursion = 0; + raw_local_irq_restore(flags); +} + static int mark_irqflags(struct task_struct *curr, struct held_lock *hlock) { /* |