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| author | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-30 13:35:11 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-30 13:35:11 +0200 |
| commit | 67577927e8d7a1f4b09b4992df640eadc6aacb36 (patch) | |
| tree | 2e9efe6b5745965faf0dcc084d4613d9356263f9 /kernel/rcupdate.c | |
| parent | MTD: Fix wrong check register_blkdev return value (diff) | |
| parent | Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 (diff) | |
| download | linux-67577927e8d7a1f4b09b4992df640eadc6aacb36.tar.xz linux-67577927e8d7a1f4b09b4992df640eadc6aacb36.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Conflicts:
drivers/mtd/mtd_blkdevs.c
Merge Grant's device-tree bits so that we can apply the subsequent fixes.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'kernel/rcupdate.c')
| -rw-r--r-- | kernel/rcupdate.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 4d169835fb36..a23a57a976d1 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -73,12 +73,14 @@ int debug_lockdep_rcu_enabled(void) EXPORT_SYMBOL_GPL(debug_lockdep_rcu_enabled); /** - * rcu_read_lock_bh_held - might we be in RCU-bh read-side critical section? + * rcu_read_lock_bh_held() - might we be in RCU-bh read-side critical section? * * Check for bottom half being disabled, which covers both the * CONFIG_PROVE_RCU and not cases. Note that if someone uses * rcu_read_lock_bh(), but then later enables BH, lockdep (if enabled) - * will show the situation. + * will show the situation. This is useful for debug checks in functions + * that require that they be called within an RCU read-side critical + * section. * * Check debug_lockdep_rcu_enabled() to prevent false positives during boot. */ @@ -86,7 +88,7 @@ int rcu_read_lock_bh_held(void) { if (!debug_lockdep_rcu_enabled()) return 1; - return in_softirq(); + return in_softirq() || irqs_disabled(); } EXPORT_SYMBOL_GPL(rcu_read_lock_bh_held); |