Revision 177c53d943368fc97644ebc0a250dc8e2d124250 authored by Peter Zijlstra on 28 February 2014, 12:39:05 UTC, committed by Ingo Molnar on 11 March 2014, 10:33:47 UTC
We must use smp_call_function_single(.wait=1) for the
irq_cpu_stop_queue_work() to ensure the queueing is actually done under
stop_cpus_lock. Without this we could have dropped the lock by the time
we do the queueing and get the race we tried to fix.
Fixes: 7053ea1a34fa ("stop_machine: Fix race between stop_two_cpus() and stop_cpus()")
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140228123905.GK3104@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent d44753b
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 394 bytes |
| compat.c | -rw-r--r-- | 19.2 KB |
| compat_mq.c | -rw-r--r-- | 4.1 KB |
| ipc_sysctl.c | -rw-r--r-- | 7.0 KB |
| ipcns_notifier.c | -rw-r--r-- | 2.2 KB |
| mq_sysctl.c | -rw-r--r-- | 2.9 KB |
| mqueue.c | -rw-r--r-- | 35.3 KB |
| msg.c | -rw-r--r-- | 24.0 KB |
| msgutil.c | -rw-r--r-- | 3.6 KB |
| namespace.c | -rw-r--r-- | 4.7 KB |
| sem.c | -rw-r--r-- | 54.8 KB |
| shm.c | -rw-r--r-- | 31.9 KB |
| syscall.c | -rw-r--r-- | 2.3 KB |
| util.c | -rw-r--r-- | 22.3 KB |
| util.h | -rw-r--r-- | 6.4 KB |
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