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authorDavid S. Miller <davem@davemloft.net>2008-11-24 00:55:29 -0500
committerDavid S. Miller <davem@davemloft.net>2008-12-04 12:17:02 -0500
commitb4f4372f96e0573d752d9e45beda02fabf716cc8 (patch)
tree641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc64/kernel/smp.c
parentc6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (diff)
sparc64: Make %pil level 15 a pseudo-NMI.
So that we can profile code even in a local_irq_disable() section, only write 14 (instead of 15) into the %pil register to disable IRQs. This allows PIL level 15 to serve as a pseudo NMI. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/smp.c')
-rw-r--r--arch/sparc64/kernel/smp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index c6d06362728c..b5225c81556c 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1146,8 +1146,8 @@ void smp_release(void)
1146 } 1146 }
1147} 1147}
1148 1148
1149/* Imprisoned penguins run with %pil == 15, but PSTATE_IE set, so they 1149/* Imprisoned penguins run with %pil == PIL_NORMAL_MAX, but PSTATE_IE
1150 * can service tlb flush xcalls... 1150 * set, so they can service tlb flush xcalls...
1151 */ 1151 */
1152extern void prom_world(int); 1152extern void prom_world(int);
1153 1153