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authorKyle McMartin <kyle@mcmartin.ca>2011-01-24 11:13:04 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2011-04-21 14:32:59 -0700
commit2226d5bb341cae0c736aad18ec24e1dfb625272d (patch)
treee49b71c3a998a92a62da427c2a5a94e383deb4db /tools
parent2951119b25479349af6ebf1bfa3111bee3c29896 (diff)
downloadlinux-2.6.38-lt-ux500-2226d5bb341cae0c736aad18ec24e1dfb625272d.tar.gz
perf tool: Fix gcc 4.6.0 issues
commit fb7d0b3cefb80a105f7fd26bbc62e0cbf9192822 upstream. GCC 4.6.0 in Fedora rawhide turned up some compile errors in tools/perf due to the -Werror=unused-but-set-variable flag. I've gone through and annotated some of the assignments that had side effects (ie: return value from a function) with the __used annotation, and in some cases, just removed unused code. In a few cases, we were assigning something useful, but not using it in later parts of the function. kyle@dreadnought:~/src% gcc --version gcc (GCC) 4.6.0 20110122 (Red Hat 4.6.0-0.3) Cc: Ingo Molnar <mingo@redhat.com> LKML-Reference: <20110124161304.GK27353@bombadil.infradead.org> Signed-off-by: Kyle McMartin <kyle@redhat.com> [ committer note: Fixed up the annotation fixes, as that code moved recently ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> [Backported to 2.6.38.2 by deleting unused but set variables] Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/bench/sched-pipe.c2
-rw-r--r--tools/perf/builtin-sched.c12
-rw-r--r--tools/perf/builtin-top.c5
-rw-r--r--tools/perf/util/header.c2
-rw-r--r--tools/perf/util/hist.c3
-rw-r--r--tools/perf/util/scripting-engines/trace-event-python.c3
-rw-r--r--tools/perf/util/symbol.c4
-rw-r--r--tools/perf/util/trace-event-parse.c2
-rw-r--r--tools/perf/util/ui/browsers/map.c2
9 files changed, 11 insertions, 24 deletions
diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
index d9ab3ce446a..0c7454f8b8a 100644
--- a/tools/perf/bench/sched-pipe.c
+++ b/tools/perf/bench/sched-pipe.c
@@ -55,7 +55,7 @@ int bench_sched_pipe(int argc, const char **argv,
* discarding returned value of read(), write()
* causes error in building environment for perf
*/
- int ret, wait_stat;
+ int __used ret, wait_stat;
pid_t pid, retpid;
argc = parse_options(argc, argv, options,
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 29acb894e03..ae7225c53c2 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -369,11 +369,6 @@ static void
process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom)
{
int ret = 0;
- u64 now;
- long long delta;
-
- now = get_nsecs();
- delta = start_time + atom->timestamp - now;
switch (atom->type) {
case SCHED_EVENT_RUN:
@@ -562,7 +557,7 @@ static void wait_for_tasks(void)
static void run_one_test(void)
{
- u64 T0, T1, delta, avg_delta, fluct, std_dev;
+ u64 T0, T1, delta, avg_delta, fluct;
T0 = get_nsecs();
wait_for_tasks();
@@ -578,7 +573,6 @@ static void run_one_test(void)
else
fluct = delta - avg_delta;
sum_fluct += fluct;
- std_dev = sum_fluct / nr_runs / sqrt(nr_runs);
if (!run_avg)
run_avg = delta;
run_avg = (run_avg*9 + delta)/10;
@@ -799,7 +793,7 @@ replay_switch_event(struct trace_switch_event *switch_event,
u64 timestamp,
struct thread *thread __used)
{
- struct task_desc *prev, *next;
+ struct task_desc *prev, __used *next;
u64 timestamp0;
s64 delta;
@@ -1404,7 +1398,7 @@ map_switch_event(struct trace_switch_event *switch_event,
u64 timestamp,
struct thread *thread __used)
{
- struct thread *sched_out, *sched_in;
+ struct thread *sched_out __used, *sched_in;
int new_shortname;
u64 timestamp0;
s64 delta;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5a29d9cd948..b0f6925b127 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -183,7 +183,6 @@ static int parse_source(struct sym_entry *syme)
FILE *file;
char command[PATH_MAX*2];
const char *path;
- u64 len;
if (!syme)
return -1;
@@ -212,8 +211,6 @@ static int parse_source(struct sym_entry *syme)
}
path = map->dso->long_name;
- len = sym->end - sym->start;
-
sprintf(command,
"objdump --start-address=%#0*" PRIx64 " --stop-address=%#0*" PRIx64 " -dS %s",
BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start),
@@ -1296,7 +1293,7 @@ static int __cmd_top(void)
{
pthread_t thread;
struct perf_evsel *counter;
- int i, ret;
+ int i, ret __used;
/*
* FIXME: perf_session__new should allow passing a O_MMAP, so that all this
* mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 0866bcdb5e8..9721e2fa9ec 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1144,7 +1144,7 @@ int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
{
event_t ev;
ssize_t size = 0, aligned_size = 0, padding;
- int err = 0;
+ int err __used = 0;
memset(&ev, 0, sizeof(ev));
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index df51560f16f..5214b703250 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1095,7 +1095,6 @@ int hist_entry__annotate(struct hist_entry *self, struct list_head *head,
char command[PATH_MAX * 2];
FILE *file;
int err = 0;
- u64 len;
char symfs_filename[PATH_MAX];
if (filename) {
@@ -1140,8 +1139,6 @@ fallback:
filename, sym->name, map->unmap_ip(map, sym->start),
map->unmap_ip(map, sym->end));
- len = sym->end - sym->start;
-
pr_debug("annotating [%p] %30s : [%p] %30s\n",
dso, dso->long_name, sym, sym->name);
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index c6d99334bdf..2040b853852 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -248,8 +248,7 @@ static void python_process_event(int cpu, void *data,
context = PyCObject_FromVoidPtr(scripting_context, NULL);
PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
- PyTuple_SetItem(t, n++,
- PyCObject_FromVoidPtr(scripting_context, NULL));
+ PyTuple_SetItem(t, n++, context);
if (handler) {
PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b1bf490aff8..ba6d4894909 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1525,8 +1525,8 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
symbol_conf.symfs, self->long_name);
break;
case DSO__ORIG_GUEST_KMODULE:
- if (map->groups && map->groups->machine)
- root_dir = map->groups->machine->root_dir;
+ if (map->groups && machine)
+ root_dir = machine->root_dir;
else
root_dir = "";
snprintf(name, size, "%s%s%s", symbol_conf.symfs,
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 73a02223c62..d8e622dd738 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -153,7 +153,7 @@ void parse_proc_kallsyms(char *file, unsigned int size __unused)
char *next = NULL;
char *addr_str;
char ch;
- int ret;
+ int ret __used;
int i;
line = strtok_r(file, "\n", &next);
diff --git a/tools/perf/util/ui/browsers/map.c b/tools/perf/util/ui/browsers/map.c
index e5158369106..8462bffe20b 100644
--- a/tools/perf/util/ui/browsers/map.c
+++ b/tools/perf/util/ui/browsers/map.c
@@ -41,7 +41,7 @@ static int ui_entry__read(const char *title, char *bf, size_t size, int width)
out_free_form:
newtPopWindow();
newtFormDestroy(form);
- return 0;
+ return err;
}
struct map_browser {