diff options
author | David S. Miller <davem@davemloft.net> | 2008-11-24 00:55:29 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-12-04 12:17:02 -0500 |
commit | b4f4372f96e0573d752d9e45beda02fabf716cc8 (patch) | |
tree | 641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc64/kernel/smp.c | |
parent | c6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (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.c | 4 |
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 | */ |
1152 | extern void prom_world(int); | 1152 | extern void prom_world(int); |
1153 | 1153 | ||