perf pmu: Support MetricExpr header in JSON event list
Add support for parsing the MetricExpr header in the JSON event lists
and storing them in the alias structure.
Used in the next patch.
v2: Change DividedBy to MetricExpr
v3: Really catch all uses of DividedBy
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-10-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 12f84dd..c0d487b 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -231,7 +231,8 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
char *desc, char *val,
char *long_desc, char *topic,
- char *unit, char *perpkg)
+ char *unit, char *perpkg,
+ char *metric_expr)
{
struct perf_pmu_alias *alias;
int ret;
@@ -265,6 +266,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
perf_pmu__parse_snapshot(alias, dir, name);
}
+ alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
alias->desc = desc ? strdup(desc) : NULL;
alias->long_desc = long_desc ? strdup(long_desc) :
desc ? strdup(desc) : NULL;
@@ -294,7 +296,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
buf[ret] = 0;
return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
- NULL);
+ NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
@@ -564,7 +566,8 @@ static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
__perf_pmu__new_alias(head, NULL, (char *)pe->name,
(char *)pe->desc, (char *)pe->event,
(char *)pe->long_desc, (char *)pe->topic,
- (char *)pe->unit, (char *)pe->perpkg);
+ (char *)pe->unit, (char *)pe->perpkg,
+ (char *)pe->metric_expr);
}
out: