Messages in this thread Patch in this message | | | From | Hitoshi Mitake <> | Subject | [PATCH 12/12] Revert "perf record: Intercept all events" | Date | Fri, 22 Jan 2010 22:39:13 +0900 |
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This reverts commit f5a2c3dce03621b55f84496f58adc2d1a87ca16f.
This patch is required for making "perf lock rec" work. The commit f5a2c3dce0 changes write_event() of builtin-record.c . And changed write_event() sometimes doesn't stop with perf lock rec.
I'm researching what makes write_event() loop infinity, and noticed that there are some events with event_t->header.size == 0. But the detail of the problem, like kind of these events, isn't clear...
If you know something related to this problem, could you tell me, Arnaldo?
Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> --- tools/perf/builtin-record.c | 28 ++++++++++------------------ 1 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 7bb9ca1..614fa9a 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -113,24 +113,16 @@ static void write_output(void *buf, size_t size) static void write_event(event_t *buf, size_t size) { - size_t processed_size = buf->header.size; - event_t *ev = buf; - - do { - /* - * Add it to the list of DSOs, so that when we finish this - * record session we can pick the available build-ids. - */ - if (ev->header.type == PERF_RECORD_MMAP) { - struct list_head *head = &dsos__user; - if (ev->header.misc == 1) - head = &dsos__kernel; - __dsos__findnew(head, ev->mmap.filename); - } - - ev = ((void *)ev) + ev->header.size; - processed_size += ev->header.size; - } while (processed_size < size); + /* + * Add it to the list of DSOs, so that when we finish this + * record session we can pick the available build-ids. + */ + if (buf->header.type == PERF_RECORD_MMAP) { + struct list_head *head = &dsos__user; + if (buf->mmap.header.misc == 1) + head = &dsos__kernel; + __dsos__findnew(head, buf->mmap.filename); + } write_output(buf, size); } -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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