powerpc/perf: Create mmcra_sihv/mmcra_sipv helpers

We want to access the MMCRA_SIHV and MMCRA_SIPR bits elsewhere so
create mmcra_sihv and mmcra_sipr which hide the differences between
the old and new layout of the bits.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 8f84bcba18da12f1ee9b1f1f5727075777febb8c..1818f636b9aef1434f1e7481eda023da0572c146 100644 (file)
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -116,6 +116,26 @@ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp)
                *addrp = mfspr(SPRN_SDAR);
 }
 
+static bool mmcra_sihv(unsigned long mmcra)
+{
+       unsigned long sihv = MMCRA_SIHV;
+
+       if (ppmu->flags & PPMU_ALT_SIPR)
+               sihv = POWER6_MMCRA_SIHV;
+
+       return !!(mmcra & sihv);
+}
+
+static bool mmcra_sipr(unsigned long mmcra)
+{
+       unsigned long sipr = MMCRA_SIPR;
+
+       if (ppmu->flags & PPMU_ALT_SIPR)
+               sipr = POWER6_MMCRA_SIPR;
+
+       return !!(mmcra & sipr);
+}
+
 static inline u32 perf_flags_from_msr(struct pt_regs *regs)
 {
        if (regs->msr & MSR_PR)
@@ -128,8 +148,6 @@ 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 sihv = MMCRA_SIHV;
-       unsigned long sipr = MMCRA_SIPR;
 
        /* Not a PMU interrupt: Make up flags from regs->msr */
        if (TRAP(regs) != 0xf00)
@@ -156,15 +174,10 @@ static inline u32 perf_get_misc_flags(struct pt_regs *regs)
                return PERF_RECORD_MISC_USER;
        }
 
-       if (ppmu->flags & PPMU_ALT_SIPR) {
-               sihv = POWER6_MMCRA_SIHV;
-               sipr = POWER6_MMCRA_SIPR;
-       }
-
        /* PR has priority over HV, so order below is important */
-       if (mmcra & sipr)
+       if (mmcra_sipr(mmcra))
                return PERF_RECORD_MISC_USER;
-       if ((mmcra & sihv) && (freeze_events_kernel != MMCR0_FCHV))
+       if (mmcra_sihv(mmcra) && (freeze_events_kernel != MMCR0_FCHV))
                return PERF_RECORD_MISC_HYPERVISOR;
        return PERF_RECORD_MISC_KERNEL;
 }