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authorAndi Kleen <ak@linux.intel.com>2017-10-20 13:27:54 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-11-16 14:49:51 -0300
commitd0565132605f454179699a1b8a3276fc0f8cc87b (patch)
tree589c4a7c13975a40b66d91604dd39cf796fa68d9 /tools
parentc2f1cead19b628d7a23d2cfc43e444af669f9eab (diff)
perf evsel: Enable type checking for perf_evsel_config_term types
Use a typed enum for the perf_evsel_config_term type enum. This allows gcc to do much stronger type checks, and also check for missing case statements. I removed the unused _MAX member from the number. It found one missing case. I'm not sure it's a real problem, so I just turned it into a BUG_ON for now. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20171020202755.21410-1-andi@firstfloor.org [ Renamed the enum name to term_type as per jolsa's request ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/evsel.c2
-rw-r--r--tools/perf/util/evsel.h5
2 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index bfde6a7a80f2..4376cdfaea49 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -779,6 +779,8 @@ static void apply_config_terms(struct perf_evsel *evsel,
case PERF_EVSEL__CONFIG_TERM_OVERWRITE:
attr->write_backward = term->val.overwrite ? 1 : 0;
break;
+ case PERF_EVSEL__CONFIG_TERM_DRV_CFG:
+ BUG_ON(1);
default:
break;
}
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 157f49e8a772..0688880227e1 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -38,7 +38,7 @@ struct cgroup_sel;
* It is allocated within event parsing and attached to
* perf_evsel::config_terms list head.
*/
-enum {
+enum term_type {
PERF_EVSEL__CONFIG_TERM_PERIOD,
PERF_EVSEL__CONFIG_TERM_FREQ,
PERF_EVSEL__CONFIG_TERM_TIME,
@@ -49,12 +49,11 @@ enum {
PERF_EVSEL__CONFIG_TERM_OVERWRITE,
PERF_EVSEL__CONFIG_TERM_DRV_CFG,
PERF_EVSEL__CONFIG_TERM_BRANCH,
- PERF_EVSEL__CONFIG_TERM_MAX,
};
struct perf_evsel_config_term {
struct list_head list;
- int type;
+ enum term_type type;
union {
u64 period;
u64 freq;