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perf llvm: Use strerror_r instead of the thread unsafe strerror one 

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5njrq9dltckgm624omw9ljgu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2016-03-23 17:42:21 -03:00
parent 78478269d2
commit 76267147f2
1 changed files with 4 additions and 3 deletions
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7
tools/perf/util/llvm-utils.c
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@ -98,11 +98,12 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz)
void *buf = NULL; void *buf = NULL;
FILE *file = NULL; FILE *file = NULL;
size_t read_sz = 0, buf_sz = 0; size_t read_sz = 0, buf_sz = 0;
char serr[STRERR_BUFSIZE];
file = popen(cmd, "r"); file = popen(cmd, "r");
if (!file) { if (!file) {
pr_err("ERROR: unable to popen cmd: %s\n", pr_err("ERROR: unable to popen cmd: %s\n",
strerror(errno)); strerror_r(errno, serr, sizeof(serr)));
return -EINVAL; return -EINVAL;
} }
@ -136,7 +137,7 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz)
if (ferror(file)) { if (ferror(file)) {
pr_err("ERROR: error occurred when reading from pipe: %s\n", pr_err("ERROR: error occurred when reading from pipe: %s\n",
strerror(errno)); strerror_r(errno, serr, sizeof(serr)));
err = -EIO; err = -EIO;
goto errout; goto errout;
} }
@ -370,7 +371,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf,
if (nr_cpus_avail <= 0) { if (nr_cpus_avail <= 0) {
pr_err( pr_err(
"WARNING:\tunable to get available CPUs in this system: %s\n" "WARNING:\tunable to get available CPUs in this system: %s\n"
" \tUse 128 instead.\n", strerror(errno)); " \tUse 128 instead.\n", strerror_r(errno, serr, sizeof(serr)));
nr_cpus_avail = 128; nr_cpus_avail = 128;
} }
snprintf(nr_cpus_avail_str, sizeof(nr_cpus_avail_str), "%d", snprintf(nr_cpus_avail_str, sizeof(nr_cpus_avail_str), "%d",