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| author | David S. Miller <davem@davemloft.net> | 2012-09-15 11:43:53 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-09-15 11:43:53 -0400 |
| commit | b48b63a1f6e26b0dec2c9f1690396ed4bcb66903 (patch) | |
| tree | 8d9ad227c3a7d35cd78d40ecaf9bf59375dbd21a /arch/powerpc/kernel/smp.c | |
| parent | 7f2e6a5d8608d0353b017a0fe15502307593734e (diff) | |
| parent | 3f0c3c8fe30c725c1264fb6db8cc4b69db3a658a (diff) | |
| download | talos-op-linux-b48b63a1f6e26b0dec2c9f1690396ed4bcb66903.tar.gz talos-op-linux-b48b63a1f6e26b0dec2c9f1690396ed4bcb66903.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
net/netfilter/nfnetlink_log.c
net/netfilter/xt_LOG.c
Rather easy conflict resolution, the 'net' tree had bug fixes to make
sure we checked if a socket is a time-wait one or not and elide the
logging code if so.
Whereas on the 'net-next' side we are calculating the UID and GID from
the creds using different interfaces due to the user namespace changes
from Eric Biederman.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 0321007086f7..8d4214afc21d 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -198,8 +198,15 @@ void smp_muxed_ipi_message_pass(int cpu, int msg) struct cpu_messages *info = &per_cpu(ipi_message, cpu); char *message = (char *)&info->messages; + /* + * Order previous accesses before accesses in the IPI handler. + */ + smp_mb(); message[msg] = 1; - mb(); + /* + * cause_ipi functions are required to include a full barrier + * before doing whatever causes the IPI. + */ smp_ops->cause_ipi(cpu, info->data); } @@ -211,7 +218,7 @@ irqreturn_t smp_ipi_demux(void) mb(); /* order any irq clear */ do { - all = xchg_local(&info->messages, 0); + all = xchg(&info->messages, 0); #ifdef __BIG_ENDIAN if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNCTION))) |
