| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 8 Mar 2017 00:08:48 +0900
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Jiri Olsa <jolsa@...nel.org>,
LKML <linux-kernel@...r.kernel.org>, kernel-team@....com
Subject: [PATCH 20/23] perf stat: Use pr_err() for error messages
There are many open calls to fprintf() for error logging. use pr_err()
instead so that they can be treated at once (e.g. with -q option).
Also convert perror() to pr_err() + str_error_r().
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/builtin-stat.c | 52 ++++++++++++++++++++++++++++-------------------
1 file changed, 31 insertions(+), 21 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index f53f449d864d..ee7190da9b6e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -555,7 +555,8 @@ static int __run_perf_stat(int argc, const char **argv)
if (forks) {
if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
workload_exec_failed_signal) < 0) {
- perror("failed to prepare workload");
+ pr_err("failed to prepare workload: %s\n",
+ str_error_r(errno, msg, sizeof(msg)));
return -1;
}
child_pid = evsel_list->workload.pid;
@@ -608,14 +609,14 @@ static int __run_perf_stat(int argc, const char **argv)
}
if (perf_evlist__apply_filters(evsel_list, &counter)) {
- error("failed to set filter \"%s\" on event %s with %d (%s)\n",
+ pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
counter->filter, perf_evsel__name(counter), errno,
str_error_r(errno, msg, sizeof(msg)));
return -1;
}
if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
- error("failed to set config \"%s\" on event %s with %d (%s)\n",
+ pr_err("failed to set config \"%s\" on event %s with %d (%s)\n",
err_term->val.drv_cfg, perf_evsel__name(counter), errno,
str_error_r(errno, msg, sizeof(msg)));
return -1;
@@ -1725,18 +1726,21 @@ static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
static int perf_stat_init_aggr_mode(void)
{
int nr;
+ char errbuf[STRERR_BUFSIZE];
switch (stat_config.aggr_mode) {
case AGGR_SOCKET:
if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
- perror("cannot build socket map");
+ pr_err("cannot build socket map: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -1;
}
aggr_get_id = perf_stat__get_socket_cached;
break;
case AGGR_CORE:
if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
- perror("cannot build core map");
+ pr_err("cannot build core map: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -1;
}
aggr_get_id = perf_stat__get_core_cached;
@@ -1835,18 +1839,21 @@ static int perf_stat__get_core_file(struct cpu_map *map, int idx)
static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
{
struct perf_env *env = &st->session->header.env;
+ char errbuf[STRERR_BUFSIZE];
switch (stat_config.aggr_mode) {
case AGGR_SOCKET:
if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
- perror("cannot build socket map");
+ pr_err("cannot build socket map: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -1;
}
aggr_get_id = perf_stat__get_socket_file;
break;
case AGGR_CORE:
if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
- perror("cannot build core map");
+ pr_err("cannot build core map: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -1;
}
aggr_get_id = perf_stat__get_core_file;
@@ -2042,7 +2049,7 @@ static int add_default_attributes(void)
else
err = parse_events(evsel_list, transaction_limited_attrs, NULL);
if (err) {
- fprintf(stderr, "Cannot set up transaction events\n");
+ pr_err("Cannot set up transaction events\n");
return -1;
}
return 0;
@@ -2075,14 +2082,13 @@ static int add_default_attributes(void)
arch_topdown_group_warn();
err = parse_events(evsel_list, str, NULL);
if (err) {
- fprintf(stderr,
- "Cannot set up top down events %s: %d\n",
+ pr_err("Cannot set up top down events %s: %d\n",
str, err);
free(str);
return -1;
}
} else {
- fprintf(stderr, "System does not support topdown\n");
+ pr_err("System does not support topdown\n");
return -1;
}
free(str);
@@ -2390,6 +2396,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
FILE *output = stderr;
unsigned int interval;
const char * const stat_subcommands[] = { "record", "report" };
+ char errbuf[STRERR_BUFSIZE];
setlocale(LC_ALL, "");
@@ -2426,24 +2433,24 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
output = NULL;
if (output_name && output_fd) {
- fprintf(stderr, "cannot use both --output and --log-fd\n");
+ pr_err("cannot use both --output and --log-fd\n");
parse_options_usage(stat_usage, stat_options, "o", 1);
parse_options_usage(NULL, stat_options, "log-fd", 0);
goto out;
}
if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
- fprintf(stderr, "--metric-only is not supported with --per-thread\n");
+ pr_err("--metric-only is not supported with --per-thread\n");
goto out;
}
if (metric_only && run_count > 1) {
- fprintf(stderr, "--metric-only is not supported with -r\n");
+ pr_err("--metric-only is not supported with -r\n");
goto out;
}
if (output_fd < 0) {
- fprintf(stderr, "argument to --log-fd must be a > 0\n");
+ pr_err("argument to --log-fd must be a > 0\n");
parse_options_usage(stat_usage, stat_options, "log-fd", 0);
goto out;
}
@@ -2454,7 +2461,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
output = fopen(output_name, mode);
if (!output) {
- perror("failed to create output file");
+ pr_err("failed to create output file: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -1;
}
clock_gettime(CLOCK_REALTIME, &tm);
@@ -2463,7 +2471,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
mode = append_file ? "a" : "w";
output = fdopen(output_fd, mode);
if (!output) {
- perror("Failed opening logfd");
+ pr_err("Failed opening logfd: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
return -errno;
}
}
@@ -2476,7 +2485,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
if (csv_output) {
/* User explicitly passed -B? */
if (big_num_opt == 1) {
- fprintf(stderr, "-B option not supported with -x\n");
+ pr_err("-B option not supported with -x\n");
parse_options_usage(stat_usage, stat_options, "B", 1);
parse_options_usage(NULL, stat_options, "x", 1);
goto out;
@@ -2497,7 +2506,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
}
if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
- fprintf(stderr, "The --per-thread option is only available "
+ pr_err("The --per-thread option is only available "
"when monitoring via -p -t options.\n");
parse_options_usage(NULL, stat_options, "p", 1);
parse_options_usage(NULL, stat_options, "t", 1);
@@ -2511,7 +2520,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
if (((stat_config.aggr_mode != AGGR_GLOBAL &&
stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
!target__has_cpu(&target)) {
- fprintf(stderr, "both cgroup and no-aggregation "
+ pr_err("both cgroup and no-aggregation "
"modes only available in system-wide mode\n");
parse_options_usage(stat_usage, stat_options, "G", 1);
@@ -2531,7 +2540,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
parse_options_usage(stat_usage, stat_options, "p", 1);
parse_options_usage(NULL, stat_options, "t", 1);
} else if (target__has_cpu(&target)) {
- perror("failed to parse CPUs map");
+ pr_err("failed to parse CPUs map: %s\n",
+ str_error_r(errno, errbuf, sizeof(errbuf)));
parse_options_usage(stat_usage, stat_options, "C", 1);
parse_options_usage(NULL, stat_options, "a", 1);
}
--
2.11.0
Powered by blists - more mailing lists