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perf_counter tools: Add more warnings and fix/annotate them

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Enable -Wextra. This found a few real bugs plus a number
of signed/unsigned type mismatches/uncleanlinesses. It
also required a few annotations

All things considered it was still worth it so lets try with
this enabled for now.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2009-07-01 12:37:06 +02:00
parent 88a69dfbc6
commit f37a291c52
27 changed files with 152 additions and 129 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
tools/perf/builtin-stat.c
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@@ -64,7 +64,7 @@ static struct perf_counter_attr default_attrs[] = {
static int system_wide = 0;
static int verbose = 0;
static int nr_cpus = 0;
static unsigned int nr_cpus = 0;
static int run_idx = 0;
static int run_count = 1;
@@ -108,7 +108,8 @@ static void create_perf_stat_counter(int counter, int pid)
PERF_FORMAT_TOTAL_TIME_RUNNING;
if (system_wide) {
int cpu;
unsigned int cpu;
for (cpu = 0; cpu < nr_cpus; cpu++) {
fd[cpu][counter] = sys_perf_counter_open(attr, -1, cpu, -1, 0);
if (fd[cpu][counter] < 0 && verbose)
@@ -150,8 +151,8 @@ static inline int nsec_counter(int counter)
static void read_counter(int counter)
{
u64 *count, single_count[3];
ssize_t res;
int cpu, nv;
unsigned int cpu;
size_t res, nv;
int scaled;
count = event_res[run_idx][counter];
@@ -165,6 +166,7 @@ static void read_counter(int counter)
res = read(fd[cpu][counter], single_count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
close(fd[cpu][counter]);
fd[cpu][counter] = -1;
@@ -200,7 +202,7 @@ static void read_counter(int counter)
runtime_cycles[run_idx] = count[0];
}
static int run_perf_stat(int argc, const char **argv)
static int run_perf_stat(int argc __used, const char **argv)
{
unsigned long long t0, t1;
int status = 0;
@@ -390,7 +392,7 @@ static void calc_avg(void)
event_res_avg[j]+1, event_res[i][j]+1);
update_avg("counter/2", j,
event_res_avg[j]+2, event_res[i][j]+2);
if (event_scaled[i][j] != -1)
if (event_scaled[i][j] != (u64)-1)
update_avg("scaled", j,
event_scaled_avg + j, event_scaled[i]+j);
else
@@ -510,7 +512,7 @@ static const struct option options[] = {
OPT_END()
};
int cmd_stat(int argc, const char **argv, const char *prefix)
int cmd_stat(int argc, const char **argv, const char *prefix __used)
{
int status;
@@ -528,7 +530,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
assert(nr_cpus <= MAX_NR_CPUS);
assert(nr_cpus >= 0);
assert((int)nr_cpus >= 0);
/*
* We dont want to block the signals - that would cause