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perf evsel: Propagate error info from tp_format

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Propagate error info from tp_format via ERR_PTR to get it all the way
down to the parse-event.c tracepoint adding routines. Following
functions now return pointer with encoded error:

  - tp_format
  - trace_event__tp_format
  - perf_evsel__newtp_idx
  - perf_evsel__newtp

This affects several other places in perf, that cannot use pointer check
anymore, but must utilize the err.h interface, when getting error
information from above functions list.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Link: http://lkml.kernel.org/r/1441615087-13886-5-git-send-email-jolsa@kernel.org
[ Add two missing ERR_PTR() and one IS_ERR() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-09-07 10:38:06 +02:00 • committed by Arnaldo Carvalho de Melo
parent e2f9f8ea6a
commit 8dd2a1317e
11 changed files with 60 additions and 24 deletions
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3
tools/perf/tests/mmap-basic.c
View file

@ -3,6 +3,7 @@
#include "thread_map.h"
#include "cpumap.h"
#include "tests.h"
#include <linux/err.h>
/*
* This test will generate random numbers of calls to some getpid syscalls,
@ -65,7 +66,7 @@ int test__basic_mmap(void)
snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]);
evsels[i] = perf_evsel__newtp("syscalls", name);
if (evsels[i] == NULL) {
if (IS_ERR(evsels[i])) {
pr_debug("perf_evsel__new\n");
goto out_delete_evlist;
}