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perf tools: Fix type for evsel->ids and add size check for ids

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Use same type for ids everywhere.

In case of writing to perf.data the size is u32. In pipe mode it is
limited to header.size (less than u16). Adding a size check here.

Size overflow due to casting shouldn't actually happen in practice, but
during development this may cause type missmatch warninngs/errors,
unifying types avoids this.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1345144224-27280-2-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Robert Richter 2012-08-16 21:10:17 +02:00 committed by Arnaldo Carvalho de Melo
parent 0985a94891
commit f4d834367c
3 changed files with 9 additions and 6 deletions
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2
tools/perf/util/evsel.h
View File

@ -53,7 +53,7 @@ struct perf_evsel {
u64 *id;
struct perf_counts *counts;
int idx;
int ids;
u32 ids;
struct hists hists;
char *name;
struct event_format *tp_format;

11
tools/perf/util/header.c
View File

@ -2240,7 +2240,7 @@ out_delete_evlist:
}
int perf_event__synthesize_attr(struct perf_tool *tool,
struct perf_event_attr *attr, u16 ids, u64 *id,
struct perf_event_attr *attr, u32 ids, u64 *id,
perf_event__handler_t process)
{
union perf_event *ev;
@ -2261,9 +2261,12 @@ int perf_event__synthesize_attr(struct perf_tool *tool,
memcpy(ev->attr.id, id, ids * sizeof(u64));
ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
ev->attr.header.size = size;
ev->attr.header.size = (u16)size;
err = process(tool, ev, NULL, NULL);
if (ev->attr.header.size == size)
err = process(tool, ev, NULL, NULL);
else
err = -E2BIG;
free(ev);
@ -2292,7 +2295,7 @@ int perf_event__synthesize_attrs(struct perf_tool *tool,
int perf_event__process_attr(union perf_event *event,
struct perf_evlist **pevlist)
{
unsigned int i, ids, n_ids;
u32 i, ids, n_ids;
struct perf_evsel *evsel;
struct perf_evlist *evlist = *pevlist;

2
tools/perf/util/header.h
View File

@ -99,7 +99,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
int perf_event__synthesize_attr(struct perf_tool *tool,
struct perf_event_attr *attr, u16 ids, u64 *id,
struct perf_event_attr *attr, u32 ids, u64 *id,
perf_event__handler_t process);
int perf_event__synthesize_attrs(struct perf_tool *tool,
struct perf_session *session,