diff options
| -rw-r--r-- | arch/powerpc/perf/isa207-common.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c index 6143c99f3ec5..7592a6491a9a 100644 --- a/arch/powerpc/perf/isa207-common.c +++ b/arch/powerpc/perf/isa207-common.c @@ -51,6 +51,15 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp) mask |= CNST_PMC_MASK(pmc); value |= CNST_PMC_VAL(pmc); + + /* + * PMC5 and PMC6 are used to count cycles and instructions and + * they do not support most of the constraint bits. Add a check + * to exclude PMC5/6 from most of the constraints except for + * EBB/BHRB. + */ + if (pmc >= 5) + goto ebb_bhrb; } if (pmc <= 4) { @@ -111,6 +120,7 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp) value |= CNST_THRESH_VAL(event >> EVENT_THRESH_SHIFT); } +ebb_bhrb: if (!pmc && ebb) /* EBB events must specify the PMC */ return -1; |