Re: [RFC PATCH 3/3] perf tool: Allow wildcard in PMU name

From: Jiri Olsa
Date: Tue Sep 11 2012 - 10:06:09 EST


On Mon, Sep 10, 2012 at 03:53:51PM +0800, Yan, Zheng wrote:
> From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
>

SNIP

> +int parse_events_add_pmu(struct list_head **_list, int *idx,
> char *name, struct list_head *head_config)
> {
> struct perf_event_attr attr;
> - struct perf_pmu *pmu;
> + struct list_head *list;
> + struct perf_pmu *pmu = NULL;
> + struct perf_evsel *evsel, *first = NULL;
> + int orig_idx = *idx;
>
> - pmu = perf_pmu__find(name);
> - if (!pmu)
> - return -EINVAL;
> + list = malloc(sizeof(*list));
> + if (!list)
> + return -ENOMEM;
> + INIT_LIST_HEAD(list);

list should be allocated only if (!*_list)) same as in add_event function

I haven't test, but I think you'll leak/loose events if there's another pmu
event defined after ','

jirka
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