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| author | David S. Miller <davem@davemloft.net> | 2010-08-09 09:03:59 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-08-09 09:07:36 +0400 |
| commit | b11287e8c5b2797b86351f6db0fcd9ff99b20bab (patch) | |
| tree | 560985ca36806d4463f71db4eb4ac4dd538a3cca /arch/sparc/include/asm/perf_event.h | |
| parent | c8837434e8bfd08abf3b596dbaeffe4a8b59a284 (diff) | |
| download | linux-b11287e8c5b2797b86351f6db0fcd9ff99b20bab.tar.xz | |
sparc64: Fix perf_arch_get_caller_regs().
After b0f82b81fe6bbcf78d478071f33e44554726bc81 ("perf: Drop the skip
argument from perf_arch_fetch_regs_caller") the build broke on sparc64
due to the lack of a module symbol export of __perf_arch_fetch_caller_regs.
But that assembler helper can actually be complete eliminated now that
the semantics of this interface have been greatly simplified.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/perf_event.h')
| -rw-r--r-- | arch/sparc/include/asm/perf_event.h | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/arch/sparc/include/asm/perf_event.h b/arch/sparc/include/asm/perf_event.h index 74c4e0cd889c..727af70646cb 100644 --- a/arch/sparc/include/asm/perf_event.h +++ b/arch/sparc/include/asm/perf_event.h @@ -10,11 +10,26 @@ extern void set_perf_event_pending(void); extern void init_hw_perf_events(void); -extern void -__perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip); - -#define perf_arch_fetch_caller_regs(pt_regs, ip) \ - __perf_arch_fetch_caller_regs(pt_regs, ip, 1); +#define perf_arch_fetch_caller_regs(regs, ip) \ +do { \ + unsigned long _pstate, _asi, _pil, _i7, _fp; \ + __asm__ __volatile__("rdpr %%pstate, %0\n\t" \ + "rd %%asi, %1\n\t" \ + "rdpr %%pil, %2\n\t" \ + "mov %%i7, %3\n\t" \ + "mov %%i6, %4\n\t" \ + : "=r" (_pstate), \ + "=r" (_asi), \ + "=r" (_pil), \ + "=r" (_i7), \ + "=r" (_fp)); \ + (regs)->tstate = (_pstate << 8) | \ + (_asi << 24) | (_pil << 20); \ + (regs)->tpc = (ip); \ + (regs)->tnpc = (regs)->tpc + 4; \ + (regs)->u_regs[UREG_I6] = _fp; \ + (regs)->u_regs[UREG_I7] = _i7; \ +} while (0) #else static inline void init_hw_perf_events(void) { } #endif |