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authorDavid S. Miller <davem@davemloft.net>2008-11-23 21:55:29 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-04 09:17:02 -0800
commitb4f4372f96e0573d752d9e45beda02fabf716cc8 (patch)
tree641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc/mm
parentc6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (diff)
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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/sparc/mm')
-rw-r--r--arch/sparc/mm/ultra.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S
index e4c146f7c7e..80c788ec7c3 100644
--- a/arch/sparc/mm/ultra.S
+++ b/arch/sparc/mm/ultra.S
@@ -466,7 +466,7 @@ xcall_sync_tick:
.previous
rdpr %pil, %g2
- wrpr %g0, 15, %pil
+ wrpr %g0, PIL_NORMAL_MAX, %pil
sethi %hi(109f), %g7
b,pt %xcc, etrap_irq
109: or %g7, %lo(109b), %g7
@@ -688,7 +688,7 @@ xcall_kgdb_capture:
.previous
rdpr %pil, %g2
- wrpr %g0, 15, %pil
+ wrpr %g0, PIL_NORMAL_MAX, %pil
sethi %hi(109f), %g7
ba,pt %xcc, etrap_irq
109: or %g7, %lo(109b), %g7