From: John Garry john.garry@huawei.com
stable inclusion from stable-5.10.73 commit 40a84fcae2bf3003cc4f84ea8d6040838031f7ff bugzilla: 182983 https://gitee.com/openeuler/kernel/issues/I4I3M0
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit fa1b41a74d1136cbdd6960f36d7b9c7aa35c8139 ]
There is much duplication in the error handling for directory transvering for prcessing JSONs.
Factor out the common code to tidy a bit.
Signed-off-by: John Garry john.garry@huawei.com Reviewed-By: Kajol Jainkjain@linux.ibm.com Link: https://lore.kernel.org/r/1603364547-197086-2-git-send-email-john.garry@huaw... Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- tools/perf/pmu-events/jevents.c | 83 ++++++++++++++------------------- 1 file changed, 35 insertions(+), 48 deletions(-)
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index dcfdf6a322dc..c679a79aef51 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -1100,12 +1100,13 @@ static int process_one_file(const char *fpath, const struct stat *sb, */ int main(int argc, char *argv[]) { - int rc, ret = 0; + int rc, ret = 0, empty_map = 0; int maxfds; char ldirname[PATH_MAX]; const char *arch; const char *output_file; const char *start_dirname; + char *err_string_ext = ""; struct stat stbuf;
prog = basename(argv[0]); @@ -1133,7 +1134,8 @@ int main(int argc, char *argv[]) /* If architecture does not have any event lists, bail out */ if (stat(ldirname, &stbuf) < 0) { pr_info("%s: Arch %s has no PMU event lists\n", prog, arch); - goto empty_map; + empty_map = 1; + goto err_close_eventsfp; }
/* Include pmu-events.h first */ @@ -1150,75 +1152,60 @@ int main(int argc, char *argv[]) */
maxfds = get_maxfds(); - mapfile = NULL; rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0); - if (rc && verbose) { - pr_info("%s: Error preprocessing arch standard files %s\n", - prog, ldirname); - goto empty_map; - } else if (rc < 0) { - /* Make build fail */ - fclose(eventsfp); - free_arch_std_events(); - return 1; - } else if (rc) { - goto empty_map; - } + if (rc) + goto err_processing_std_arch_event_dir;
rc = nftw(ldirname, process_one_file, maxfds, 0); - if (rc && verbose) { - pr_info("%s: Error walking file tree %s\n", prog, ldirname); - goto empty_map; - } else if (rc < 0) { - /* Make build fail */ - fclose(eventsfp); - free_arch_std_events(); - ret = 1; - goto out_free_mapfile; - } else if (rc) { - goto empty_map; - } + if (rc) + goto err_processing_dir;
sprintf(ldirname, "%s/test", start_dirname);
rc = nftw(ldirname, process_one_file, maxfds, 0); - if (rc && verbose) { - pr_info("%s: Error walking file tree %s rc=%d for test\n", - prog, ldirname, rc); - goto empty_map; - } else if (rc < 0) { - /* Make build fail */ - free_arch_std_events(); - ret = 1; - goto out_free_mapfile; - } else if (rc) { - goto empty_map; - } + if (rc) + goto err_processing_dir;
if (close_table) print_events_table_suffix(eventsfp);
if (!mapfile) { pr_info("%s: No CPU->JSON mapping?\n", prog); - goto empty_map; + empty_map = 1; + goto err_close_eventsfp; }
- if (process_mapfile(eventsfp, mapfile)) { + rc = process_mapfile(eventsfp, mapfile); + fclose(eventsfp); + if (rc) { pr_info("%s: Error processing mapfile %s\n", prog, mapfile); /* Make build fail */ - fclose(eventsfp); - free_arch_std_events(); ret = 1; + goto err_out; }
+ free_arch_std_events(); + free(mapfile); + return 0;
- goto out_free_mapfile; - -empty_map: +err_processing_std_arch_event_dir: + err_string_ext = " for std arch event"; +err_processing_dir: + if (verbose) { + pr_info("%s: Error walking file tree %s%s\n", prog, ldirname, + err_string_ext); + empty_map = 1; + } else if (rc < 0) { + ret = 1; + } else { + empty_map = 1; + } +err_close_eventsfp: fclose(eventsfp); - create_empty_mapping(output_file); + if (empty_map) + create_empty_mapping(output_file); +err_out: free_arch_std_events(); -out_free_mapfile: free(mapfile); return ret; }