diff options
| author | David S. Miller <davem@davemloft.net> | 2008-11-23 21:55:29 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:02 -0800 |
| commit | b4f4372f96e0573d752d9e45beda02fabf716cc8 (patch) | |
| tree | 641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc64/kernel/sun4v_ivec.S | |
| parent | c6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (diff) | |
| download | lwn-b4f4372f96e0573d752d9e45beda02fabf716cc8.tar.gz lwn-b4f4372f96e0573d752d9e45beda02fabf716cc8.zip | |
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/sun4v_ivec.S')
| -rw-r--r-- | arch/sparc64/kernel/sun4v_ivec.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/sparc64/kernel/sun4v_ivec.S b/arch/sparc64/kernel/sun4v_ivec.S index e2f8e1b4882a..559bc5e9c199 100644 --- a/arch/sparc64/kernel/sun4v_ivec.S +++ b/arch/sparc64/kernel/sun4v_ivec.S @@ -186,7 +186,7 @@ sun4v_res_mondo: * when it's done. */ rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil mov %g1, %g4 ba,pt %xcc, etrap_irq rd %pc, %g7 @@ -216,7 +216,7 @@ sun4v_res_mondo_queue_full: membar #Sync rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -297,7 +297,7 @@ sun4v_nonres_mondo: * when it's done. */ rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil mov %g1, %g4 ba,pt %xcc, etrap_irq rd %pc, %g7 @@ -327,7 +327,7 @@ sun4v_nonres_mondo_queue_full: membar #Sync rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS |