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| author | Namhyung Kim <namhyung@kernel.org> | 2013-12-12 16:36:08 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-12-13 10:30:22 -0300 |
| commit | 605b8fda958a578e0a50ed1df3cac5a12f1fe8dc (patch) | |
| tree | a28e668c0c22484a355b5707c8a9dd308c53d496 /tools/lib/traceevent | |
| parent | 91dfa49bdd8ef9600d850ef68ec892eb70824e3d (diff) | |
| download | op-kernel-dev-605b8fda958a578e0a50ed1df3cac5a12f1fe8dc.zip op-kernel-dev-605b8fda958a578e0a50ed1df3cac5a12f1fe8dc.tar.gz | |
tools lib traceevent: Get rid of malloc_or_die() in find_event()
Make it return pevent_errno to distinguish malloc allocation failure.
Since it'll be returned to user later, add more error code.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386833777-3790-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/traceevent')
| -rw-r--r-- | tools/lib/traceevent/event-parse.h | 4 | ||||
| -rw-r--r-- | tools/lib/traceevent/parse-filter.c | 27 |
2 files changed, 22 insertions, 9 deletions
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index 6e23f19..abdfd3c 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -356,7 +356,9 @@ enum pevent_flag { _PE(READ_FORMAT_FAILED, "failed to read event format"), \ _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ - _PE(INVALID_ARG_TYPE, "invalid argument type") + _PE(INVALID_ARG_TYPE, "invalid argument type"), \ + _PE(INVALID_EVENT_NAME, "invalid event name"), \ + _PE(EVENT_NOT_FOUND, "No event found") #undef _PE #define _PE(__code, __str) PEVENT_ERRNO__ ## __code diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c index 246ee81..a0ab040 100644 --- a/tools/lib/traceevent/parse-filter.c +++ b/tools/lib/traceevent/parse-filter.c @@ -287,7 +287,7 @@ static int event_match(struct event_format *event, !regexec(ereg, event->name, 0, NULL, 0); } -static int +static enum pevent_errno find_event(struct pevent *pevent, struct event_list **events, char *sys_name, char *event_name) { @@ -306,23 +306,31 @@ find_event(struct pevent *pevent, struct event_list **events, sys_name = NULL; } - reg = malloc_or_die(strlen(event_name) + 3); + reg = malloc(strlen(event_name) + 3); + if (reg == NULL) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + sprintf(reg, "^%s$", event_name); ret = regcomp(&ereg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) - return -1; + return PEVENT_ERRNO__INVALID_EVENT_NAME; if (sys_name) { - reg = malloc_or_die(strlen(sys_name) + 3); + reg = malloc(strlen(sys_name) + 3); + if (reg == NULL) { + regfree(&ereg); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } + sprintf(reg, "^%s$", sys_name); ret = regcomp(&sreg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) { regfree(&ereg); - return -1; + return PEVENT_ERRNO__INVALID_EVENT_NAME; } } @@ -342,9 +350,9 @@ find_event(struct pevent *pevent, struct event_list **events, regfree(&sreg); if (!match) - return -1; + return PEVENT_ERRNO__EVENT_NOT_FOUND; if (fail) - return -2; + return PEVENT_ERRNO__MEM_ALLOC_FAILED; return 0; } @@ -1312,7 +1320,10 @@ int pevent_filter_add_filter_str(struct event_filter *filter, /* Find this event */ ret = find_event(pevent, &events, strim(sys_name), strim(event_name)); if (ret < 0) { - if (event_name) + if (ret == PEVENT_ERRNO__MEM_ALLOC_FAILED) + show_error(error_str, + "Memory allocation failure"); + else if (event_name) show_error(error_str, "No event found under '%s.%s'", sys_name, event_name); |
