From 4bd0f2d2c0cf14de9c84c2fe689120c6b0f667c8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 26 Apr 2012 14:15:18 +0900 Subject: [PATCH] perf tools: Introduce perf_target__validate() helper The perf_target__validate function is used to check given PID/TID/UID/CPU target options and warn if some combination is impossible. Also this can make some arguments of parse_target_uid() function useless as it is checked before the call via our new helper. Signed-off-by: Namhyung Kim Reviewed-by: David Ahern Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1335417327-11796-5-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 9 +++------ tools/perf/builtin-stat.c | 3 +-- tools/perf/builtin-top.c | 15 +++------------ tools/perf/util/usage.c | 29 +++++++++++++++++++++-------- tools/perf/util/util.h | 4 +++- 5 files changed, 31 insertions(+), 29 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 4dcf27057bd2..3596ccab6d3b 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -884,16 +884,13 @@ int cmd_record(int argc, const char **argv, const char *prefix __used) goto out_symbol_exit; } - rec->opts.target.uid = parse_target_uid(rec->opts.target.uid_str, - rec->opts.target.tid, - rec->opts.target.pid); + perf_target__validate(&rec->opts.target); + + rec->opts.target.uid = parse_target_uid(rec->opts.target.uid_str); if (rec->opts.target.uid_str != NULL && rec->opts.target.uid == UINT_MAX - 1) goto out_free_fd; - if (rec->opts.target.pid) - rec->opts.target.tid = rec->opts.target.pid; - if (perf_evlist__create_maps(evsel_list, rec->opts.target.pid, rec->opts.target.tid, rec->opts.target.uid, rec->opts.target.cpu_list) < 0) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 1ca767d906ef..bb7723221c0d 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1203,8 +1203,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used) if (add_default_attributes()) goto out; - if (target.pid) - target.tid = target.pid; + perf_target__validate(&target); evsel_list->threads = thread_map__new_str(target.pid, target.tid, UINT_MAX); diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 2c1c207627b4..4f47952eddbd 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1252,21 +1252,12 @@ int cmd_top(int argc, const char **argv, const char *prefix __used) setup_browser(false); - top.target.uid = parse_target_uid(top.target.uid_str, top.target.tid, - top.target.pid); + perf_target__validate(&top.target); + + top.target.uid = parse_target_uid(top.target.uid_str); if (top.target.uid_str != NULL && top.target.uid == UINT_MAX - 1) goto out_delete_evlist; - /* CPU and PID are mutually exclusive */ - if (top.target.tid && top.target.cpu_list) { - printf("WARNING: PID switch overriding CPU\n"); - sleep(1); - top.target.cpu_list = NULL; - } - - if (top.target.pid) - top.target.tid = top.target.pid; - if (perf_evlist__create_maps(top.evlist, top.target.pid, top.target.tid, top.target.uid, top.target.cpu_list) < 0) diff --git a/tools/perf/util/usage.c b/tools/perf/util/usage.c index 52bb07c6442a..0a1a885a5914 100644 --- a/tools/perf/util/usage.c +++ b/tools/perf/util/usage.c @@ -83,7 +83,7 @@ void warning(const char *warn, ...) va_end(params); } -uid_t parse_target_uid(const char *str, const char *tid, const char *pid) +uid_t parse_target_uid(const char *str) { struct passwd pwd, *result; char buf[1024]; @@ -91,13 +91,6 @@ uid_t parse_target_uid(const char *str, const char *tid, const char *pid) if (str == NULL) return UINT_MAX; - /* UID and PID are mutually exclusive */ - if (tid || pid) { - ui__warning("PID/TID switch overriding UID\n"); - sleep(1); - return UINT_MAX; - } - getpwnam_r(str, &pwd, buf, sizeof(buf), &result); if (result == NULL) { @@ -120,3 +113,23 @@ uid_t parse_target_uid(const char *str, const char *tid, const char *pid) return result->pw_uid; } + +void perf_target__validate(struct perf_target *target) +{ + if (target->pid) + target->tid = target->pid; + + /* CPU and PID are mutually exclusive */ + if (target->tid && target->cpu_list) { + ui__warning("WARNING: PID switch overriding CPU\n"); + sleep(1); + target->cpu_list = NULL; + } + + /* UID and PID are mutually exclusive */ + if (target->tid && target->uid_str) { + ui__warning("PID/TID switch overriding UID\n"); + sleep(1); + target->uid_str = NULL; + } +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 0f99f394d8e0..3f05d6264dab 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -246,10 +246,12 @@ unsigned long convert_unit(unsigned long value, char *unit); int readn(int fd, void *buf, size_t size); struct perf_event_attr; +struct perf_target; void event_attr_init(struct perf_event_attr *attr); -uid_t parse_target_uid(const char *str, const char *tid, const char *pid); +uid_t parse_target_uid(const char *str); +void perf_target__validate(struct perf_target *target); #define _STR(x) #x #define STR(x) _STR(x)