diff options
| author | Tejun Heo <tj@kernel.org> | 2011-05-02 14:16:37 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-05-02 14:16:47 +0200 |
| commit | ba67cf5cf2ce10ad86a212b70f8c7c75d93a5016 (patch) | |
| tree | 70242f5927c6d6454bd352ff78f956cfc5238f59 /include/linux/bit_spinlock.h | |
| parent | aff364860aa105b2deacc6f21ec8ef524460e3fc (diff) | |
| parent | 2be19102b71c1a45d37fec50303791daa1a06869 (diff) | |
Merge branch 'x86/urgent' into x86-mm
Merge reason: Pick up the following two fix commits.
2be19102b7: x86, NUMA: Fix empty memblk detection in numa_cleanup_meminfo()
765af22da8: x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
Scheduled NUMA init 32/64bit unification changes depend on these.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/bit_spinlock.h')
| -rw-r--r-- | include/linux/bit_spinlock.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h index e612575a259..b4326bfa684 100644 --- a/include/linux/bit_spinlock.h +++ b/include/linux/bit_spinlock.h @@ -23,11 +23,11 @@ static inline void bit_spin_lock(int bitnum, unsigned long *addr) preempt_disable(); #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) while (unlikely(test_and_set_bit_lock(bitnum, addr))) { - while (test_bit(bitnum, addr)) { - preempt_enable(); + preempt_enable(); + do { cpu_relax(); - preempt_disable(); - } + } while (test_bit(bitnum, addr)); + preempt_disable(); } #endif __acquire(bitlock); |