powerpc/perf_events: Fix priority of MSR HV vs PR bits
[linux-2.6.git] / arch / powerpc / kernel / perf_event.c
index bbcbae1..87f1663 100644 (file)
@@ -116,20 +116,23 @@ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp)
 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;
 
        if (TRAP(regs) != 0xf00)
                return 0;       /* not a PMU interrupt */
 
        if (ppmu->flags & PPMU_ALT_SIPR) {
-               if (mmcra & POWER6_MMCRA_SIHV)
-                       return PERF_RECORD_MISC_HYPERVISOR;
-               return (mmcra & POWER6_MMCRA_SIPR) ?
-                       PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL;
+               sihv = POWER6_MMCRA_SIHV;
+               sipr = POWER6_MMCRA_SIPR;
        }
-       if (mmcra & MMCRA_SIHV)
+
+       /* PR has priority over HV, so order below is important */
+       if (mmcra & sipr)
+               return PERF_RECORD_MISC_USER;
+       if ((mmcra & sihv) && (freeze_events_kernel != MMCR0_FCHV))
                return PERF_RECORD_MISC_HYPERVISOR;
-       return (mmcra & MMCRA_SIPR) ? PERF_RECORD_MISC_USER :
-               PERF_RECORD_MISC_KERNEL;
+       return PERF_RECORD_MISC_KERNEL;
 }
 
 /*