perf target: Introduce perf_target_errno
The perf_target_errno enumerations are used to indicate specific error
cases on perf target operations. It'd help libperf being a more generic
library.
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Reviewed-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1336367344-28071-4-git-send-email-namhyung.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h
index 218291f..eb0d210 100644
--- a/tools/perf/util/target.h
+++ b/tools/perf/util/target.h
@@ -13,6 +13,29 @@
bool system_wide;
};
-void perf_target__validate(struct perf_target *target);
+enum perf_target_errno {
+ PERF_ERRNO_TARGET__SUCCESS = 0,
+
+ /*
+ * Choose an arbitrary negative big number not to clash with standard
+ * errno since SUS requires the errno has distinct positive values.
+ * See 'Issue 6' in the link below.
+ *
+ * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+ */
+ __PERF_ERRNO_TARGET__START = -10000,
+
+
+ /* for perf_target__validate() */
+ PERF_ERRNO_TARGET__PID_OVERRIDE_CPU = __PERF_ERRNO_TARGET__START,
+ PERF_ERRNO_TARGET__PID_OVERRIDE_UID,
+ PERF_ERRNO_TARGET__UID_OVERRIDE_CPU,
+ PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM,
+ PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM,
+
+ __PERF_ERRNO_TARGET__END,
+};
+
+enum perf_target_errno perf_target__validate(struct perf_target *target);
#endif /* _PERF_TARGET_H */