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| 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/traps.c | |
| 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/traps.c')
| -rw-r--r-- | arch/sparc64/kernel/traps.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index 04994fc8700d..4638af2f55a0 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -1832,7 +1832,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, } } -/* We run with %pil set to 15 and PSTATE_IE enabled in %pstate. +/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. * Log the event and clear the first word of the entry. */ void sun4v_resum_error(struct pt_regs *regs, unsigned long offset) @@ -1880,7 +1880,7 @@ void sun4v_resum_overflow(struct pt_regs *regs) atomic_inc(&sun4v_resum_oflow_cnt); } -/* We run with %pil set to 15 and PSTATE_IE enabled in %pstate. +/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. * Log the event, clear the first word of the entry, and die. */ void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset) |