diff options
| author | David S. Miller <davem@davemloft.net> | 2008-11-24 08:55:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 20:17:02 +0300 |
| commit | b4f4372f96e0573d752d9e45beda02fabf716cc8 (patch) | |
| tree | 641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc/include/asm/ttable.h | |
| parent | c6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (diff) | |
| download | linux-b4f4372f96e0573d752d9e45beda02fabf716cc8.tar.xz | |
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/include/asm/ttable.h')
| -rw-r--r-- | arch/sparc/include/asm/ttable.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/ttable.h b/arch/sparc/include/asm/ttable.h index 5708ba2719fb..bb2c0770a6ac 100644 --- a/arch/sparc/include/asm/ttable.h +++ b/arch/sparc/include/asm/ttable.h @@ -2,6 +2,7 @@ #define _SPARC64_TTABLE_H #include <asm/utrap.h> +#include <asm/pil.h> #ifdef __ASSEMBLY__ #include <asm/thread_info.h> @@ -123,7 +124,7 @@ #define TRAP_IRQ(routine, level) \ rdpr %pil, %g2; \ - wrpr %g0, 15, %pil; \ + wrpr %g0, PIL_NORMAL_MAX, %pil; \ sethi %hi(1f-4), %g7; \ ba,pt %xcc, etrap_irq; \ or %g7, %lo(1f-4), %g7; \ @@ -143,7 +144,7 @@ #define TRAP_IRQ(routine, level) \ rdpr %pil, %g2; \ - wrpr %g0, 15, %pil; \ + wrpr %g0, PIL_NORMAL_MAX, %pil; \ ba,pt %xcc, etrap_irq; \ rd %pc, %g7; \ mov level, %o0; \ @@ -153,6 +154,16 @@ #endif +#define TRAP_NMI_IRQ(routine, level) \ + rdpr %pil, %g2; \ + wrpr %g0, PIL_NMI, %pil; \ + ba,pt %xcc, etrap_irq; \ + rd %pc, %g7; \ + mov level, %o0; \ + call routine; \ + add %sp, PTREGS_OFF, %o1; \ + ba,a,pt %xcc, rtrap_irq; + #define TRAP_IVEC TRAP_NOSAVE(do_ivec) #define BTRAP(lvl) TRAP_ARG(bad_trap, lvl) |