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powerpc/perf: Convert mmcra_sipr/sihv() to regs_sipr/sihv()

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On power8 the SIPR and SIHV are not in MMCRA, so convert the routines
to take regs and change the names accordingly.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2013-04-25 19:28:24 +00:00 committed by Benjamin Herrenschmidt
parent 7a7868326d
commit 5682c46026
1 changed files with 11 additions and 9 deletions
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20
arch/powerpc/perf/core-book3s.c
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@ -131,24 +131,24 @@ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp)
*addrp = mfspr(SPRN_SDAR);
}
static bool mmcra_sihv(unsigned long mmcra)
static bool regs_sihv(struct pt_regs *regs)
{
unsigned long sihv = MMCRA_SIHV;
if (ppmu->flags & PPMU_ALT_SIPR)
sihv = POWER6_MMCRA_SIHV;
return !!(mmcra & sihv);
return !!(regs->dsisr & sihv);
}
static bool mmcra_sipr(unsigned long mmcra)
static bool regs_sipr(struct pt_regs *regs)
{
unsigned long sipr = MMCRA_SIPR;
if (ppmu->flags & PPMU_ALT_SIPR)
sipr = POWER6_MMCRA_SIPR;
return !!(mmcra & sipr);
return !!(regs->dsisr & sipr);
}
static inline u32 perf_flags_from_msr(struct pt_regs *regs)
@ -162,7 +162,6 @@ static inline u32 perf_flags_from_msr(struct pt_regs *regs)
static inline u32 perf_get_misc_flags(struct pt_regs *regs)
{
unsigned long mmcra = regs->dsisr;
unsigned long use_siar = regs->result;
if (!use_siar)
@ -182,10 +181,12 @@ static inline u32 perf_get_misc_flags(struct pt_regs *regs)
}
/* PR has priority over HV, so order below is important */
if (mmcra_sipr(mmcra))
if (regs_sipr(regs))
return PERF_RECORD_MISC_USER;
if (mmcra_sihv(mmcra) && (freeze_events_kernel != MMCR0_FCHV))
if (regs_sihv(regs) && (freeze_events_kernel != MMCR0_FCHV))
return PERF_RECORD_MISC_HYPERVISOR;
return PERF_RECORD_MISC_KERNEL;
}
@ -201,6 +202,8 @@ static inline void perf_read_regs(struct pt_regs *regs)
int marked = mmcra & MMCRA_SAMPLE_ENABLE;
int use_siar;
regs->dsisr = mmcra;
/*
* If this isn't a PMU exception (eg a software event) the SIAR is
* not valid. Use pt_regs.
@ -224,12 +227,11 @@ static inline void perf_read_regs(struct pt_regs *regs)
use_siar = 1;
else if ((ppmu->flags & PPMU_NO_CONT_SAMPLING))
use_siar = 0;
else if (!(ppmu->flags & PPMU_NO_SIPR) && mmcra_sipr(mmcra))
else if (!(ppmu->flags & PPMU_NO_SIPR) && regs_sipr(regs))
use_siar = 0;
else
use_siar = 1;
regs->dsisr = mmcra;
regs->result = use_siar;
}