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SubjectRe: [PATCH 8/8] perf tools: Get current comm instead of last one
On Thu, Sep 26, 2013 at 05:58:10PM +0900, Namhyung Kim wrote:
> From: Namhyung Kim <namhyung.kim@lge.com>
>
> At insert time, a hist entry should reference comm at the time
> otherwise it'll get the last comm anyway.
>
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> Cc: Frederic Weisbecker <fweisbec@gmail.com>
> Link: http://lkml.kernel.org/n/tip-n6pykiiymtgmcjs834go2t8x@git.kernel.org
> [ Fixed up const pointer issues ]
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> ---
> tools/perf/util/comm.c | 15 +++++++++++++++
> tools/perf/util/comm.h | 1 +
> tools/perf/util/hist.c | 3 +++
> tools/perf/util/sort.c | 14 +++++---------
> tools/perf/util/sort.h | 1 +
> tools/perf/util/thread.c | 6 +++---
> tools/perf/util/thread.h | 2 ++
> 7 files changed, 30 insertions(+), 12 deletions(-)
>
> diff --git a/tools/perf/util/comm.c b/tools/perf/util/comm.c
> index 0cfb55202537..ecd3c9938d3e 100644
> --- a/tools/perf/util/comm.c
> +++ b/tools/perf/util/comm.c
> @@ -94,6 +94,21 @@ struct comm *comm__new(const char *str, u64 timestamp)
> return comm;
> }
>
> +void comm__override(struct comm *comm, const char *str, u64 timestamp)
> +{
> + struct comm_str *old = comm->comm_str;
> +
> + comm->comm_str = comm_str_findnew(str, &comm_str_root);
> + if (!comm->comm_str) {
> + comm->comm_str = old;
> + return;
> + }
> +
> + comm->start = timestamp;
> + comm_str_get(comm->comm_str);
> + comm_str_put(old);
> +}
> +
> void comm__free(struct comm *comm)
> {
> comm_str_put(comm->comm_str);
> diff --git a/tools/perf/util/comm.h b/tools/perf/util/comm.h
> index f62d215bede2..b2c364b37468 100644
> --- a/tools/perf/util/comm.h
> +++ b/tools/perf/util/comm.h
> @@ -16,5 +16,6 @@ struct comm {
> void comm__free(struct comm *comm);
> struct comm *comm__new(const char *str, u64 timestamp);
> const char *comm__str(const struct comm *comm);
> +void comm__override(struct comm *self, const char *str, u64 timestamp);
>
> #endif /* __PERF_COMM_H */
> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
> index a2d58e7abdcf..1aa97b012a09 100644
> --- a/tools/perf/util/hist.c
> +++ b/tools/perf/util/hist.c
> @@ -412,6 +412,7 @@ struct hist_entry *__hists__add_mem_entry(struct hists *self,
> {
> struct hist_entry entry = {
> .thread = al->thread,
> + .comm = curr_comm(al->thread),

So now that we have an accessor for that, it clashes a bit with existing names.

I suggest we rename thread__comm_curr() -> thread__comm_str()
And rename curr_comm() -> thread__comm()

Hmm?


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