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authorSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>2014-02-26 04:07:29 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-03-05 08:53:24 +0400
commit402d9a1e02f7215628f13b7c80ff3e98c3a0cadc (patch)
tree5f140acef1455adec52d9f08ab8bdffb8882a67d /arch/powerpc/platforms/ps3/smp.c
parent849401b66d305f3feb75b6db7459b95ad190552a (diff)
downloadlinux-402d9a1e02f7215628f13b7c80ff3e98c3a0cadc.tar.xz
powerpc: Free up the slot of PPC_MSG_CALL_FUNC_SINGLE IPI message
The IPI handlers for both PPC_MSG_CALL_FUNC and PPC_MSG_CALL_FUNC_SINGLE map to a common implementation - generic_smp_call_function_single_interrupt(). So, we can consolidate them and save one of the IPI message slots, (which are precious on powerpc, since only 4 of those slots are available). So, implement the functionality of PPC_MSG_CALL_FUNC_SINGLE using PPC_MSG_CALL_FUNC itself and release its IPI message slot, so that it can be used for something else in the future, if desired. Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com> Acked-by: Geoff Levand <geoff@infradead.org> [For the PS3 part] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/ps3/smp.c')
-rw-r--r--arch/powerpc/platforms/ps3/smp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/ps3/smp.c b/arch/powerpc/platforms/ps3/smp.c
index 4b35166229fe..00d1a7c2a5a4 100644
--- a/arch/powerpc/platforms/ps3/smp.c
+++ b/arch/powerpc/platforms/ps3/smp.c
@@ -76,7 +76,7 @@ static int __init ps3_smp_probe(void)
BUILD_BUG_ON(PPC_MSG_CALL_FUNCTION != 0);
BUILD_BUG_ON(PPC_MSG_RESCHEDULE != 1);
- BUILD_BUG_ON(PPC_MSG_CALL_FUNC_SINGLE != 2);
+ BUILD_BUG_ON(PPC_MSG_UNUSED != 2);
BUILD_BUG_ON(PPC_MSG_DEBUGGER_BREAK != 3);
for (i = 0; i < MSG_COUNT; i++) {