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| author | David S. Miller <davem@davemloft.net> | 2016-02-23 00:09:14 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-23 00:09:14 -0500 |
| commit | b633353115e352d3c31c12d4c61978c810f05ea1 (patch) | |
| tree | 055174a1b31a3e10fd2c505788fe6487b0028d00 /lib/dump_stack.c | |
| parent | b1d95ae5c5bd3deba84d00c4f83d7d0836b5936f (diff) | |
| parent | dea08e604408d0303e2332896c5fdd8c1f7d79a2 (diff) | |
| download | linux-b633353115e352d3c31c12d4c61978c810f05ea1.tar.gz linux-b633353115e352d3c31c12d4c61978c810f05ea1.tar.bz2 linux-b633353115e352d3c31c12d4c61978c810f05ea1.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/phy/bcm7xxx.c
drivers/net/phy/marvell.c
drivers/net/vxlan.c
All three conflicts were cases of simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/dump_stack.c')
| -rw-r--r-- | lib/dump_stack.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/dump_stack.c b/lib/dump_stack.c index 6745c6230db3..c30d07e99dba 100644 --- a/lib/dump_stack.c +++ b/lib/dump_stack.c @@ -25,6 +25,7 @@ static atomic_t dump_lock = ATOMIC_INIT(-1); asmlinkage __visible void dump_stack(void) { + unsigned long flags; int was_locked; int old; int cpu; @@ -33,9 +34,8 @@ asmlinkage __visible void dump_stack(void) * Permit this cpu to perform nested stack dumps while serialising * against other CPUs */ - preempt_disable(); - retry: + local_irq_save(flags); cpu = smp_processor_id(); old = atomic_cmpxchg(&dump_lock, -1, cpu); if (old == -1) { @@ -43,6 +43,7 @@ retry: } else if (old == cpu) { was_locked = 1; } else { + local_irq_restore(flags); cpu_relax(); goto retry; } @@ -52,7 +53,7 @@ retry: if (!was_locked) atomic_set(&dump_lock, -1); - preempt_enable(); + local_irq_restore(flags); } #else asmlinkage __visible void dump_stack(void) |