From 1d037ca1648b775277fc96401ec2aa233724906c Mon Sep 17 00:00:00 2001 From: Irina Tirdea Date: Tue, 11 Sep 2012 01:15:03 +0300 Subject: perf tools: Use __maybe_used for unused variables perf defines both __used and __unused variables to use for marking unused variables. The variable __used is defined to __attribute__((__unused__)), which contradicts the kernel definition to __attribute__((__used__)) for new gcc versions. On Android, __used is also defined in system headers and this leads to warnings like: warning: '__used__' attribute ignored __unused is not defined in the kernel and is not a standard definition. If __unused is included everywhere instead of __used, this leads to conflicts with glibc headers, since glibc has a variables with this name in its headers. The best approach is to use __maybe_unused, the definition used in the kernel for __attribute__((unused)). In this way there is only one definition in perf sources (instead of 2 definitions that point to the same thing: __used and __unused) and it works on both Linux and Android. This patch simply replaces all instances of __used and __unused with __maybe_unused. Signed-off-by: Irina Tirdea Acked-by: Pekka Enberg Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com [ committer note: fixed up conflict with a116e05 in builtin-sched.c ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/scripting-engines/trace-event-perl.c | 8 ++++---- tools/perf/util/scripting-engines/trace-event-python.c | 10 ++++++---- 2 files changed, 10 insertions(+), 8 deletions(-) (limited to 'tools/perf/util/scripting-engines') diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index 94e673643bc..ffde3e4e34a 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -257,10 +257,10 @@ static inline struct event_format *find_cache_event(struct perf_evsel *evsel) return event; } -static void perl_process_tracepoint(union perf_event *perf_event __unused, +static void perl_process_tracepoint(union perf_event *perf_event __maybe_unused, struct perf_sample *sample, struct perf_evsel *evsel, - struct machine *machine __unused, + struct machine *machine __maybe_unused, struct addr_location *al) { struct format_field *field; @@ -349,8 +349,8 @@ static void perl_process_tracepoint(union perf_event *perf_event __unused, static void perl_process_event_generic(union perf_event *event, struct perf_sample *sample, struct perf_evsel *evsel, - struct machine *machine __unused, - struct addr_location *al __unused) + struct machine *machine __maybe_unused, + struct addr_location *al __maybe_unused) { dSP; diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index afba0972918..730c6630cba 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -221,10 +221,11 @@ static inline struct event_format *find_cache_event(struct perf_evsel *evsel) return event; } -static void python_process_tracepoint(union perf_event *perf_event __unused, +static void python_process_tracepoint(union perf_event *perf_event + __maybe_unused, struct perf_sample *sample, struct perf_evsel *evsel, - struct machine *machine __unused, + struct machine *machine __maybe_unused, struct addr_location *al) { PyObject *handler, *retval, *context, *t, *obj, *dict = NULL; @@ -339,10 +340,11 @@ static void python_process_tracepoint(union perf_event *perf_event __unused, Py_DECREF(t); } -static void python_process_general_event(union perf_event *perf_event __unused, +static void python_process_general_event(union perf_event *perf_event + __maybe_unused, struct perf_sample *sample, struct perf_evsel *evsel, - struct machine *machine __unused, + struct machine *machine __maybe_unused, struct addr_location *al) { PyObject *handler, *retval, *t, *dict; -- cgit v1.2.3-70-g09d2