From 4bd0f2d2c0cf14de9c84c2fe689120c6b0f667c8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 26 Apr 2012 14:15:18 +0900 Subject: 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/util/util.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools/perf/util/util.h') 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) -- cgit v1.2.3 From 12864b31583bcbd26789ebe68c612688f9ee2e30 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 26 Apr 2012 14:15:22 +0900 Subject: perf target: Split out perf_target handling code For further work on perf_target, it'd be better off splitting the code into a separate file. 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/1335417327-11796-9-git-send-email-namhyung.kim@lge.com [ committer note: Fixed perl build by using stdbool and types.h in target.h ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile | 2 ++ tools/perf/perf.h | 9 +-------- tools/perf/util/evlist.c | 1 + tools/perf/util/evsel.c | 1 + tools/perf/util/target.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/target.h | 18 ++++++++++++++++++ tools/perf/util/usage.c | 34 ---------------------------------- tools/perf/util/util.h | 2 -- 8 files changed, 68 insertions(+), 44 deletions(-) create mode 100644 tools/perf/util/target.c create mode 100644 tools/perf/util/target.h (limited to 'tools/perf/util/util.h') diff --git a/tools/perf/Makefile b/tools/perf/Makefile index e98e14c88532..4122a668952e 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -300,6 +300,7 @@ LIB_H += util/cpumap.h LIB_H += util/top.h LIB_H += $(ARCH_INCLUDE) LIB_H += util/cgroup.h +LIB_H += util/target.h LIB_OBJS += $(OUTPUT)util/abspath.o LIB_OBJS += $(OUTPUT)util/alias.o @@ -361,6 +362,7 @@ LIB_OBJS += $(OUTPUT)util/util.o LIB_OBJS += $(OUTPUT)util/xyarray.o LIB_OBJS += $(OUTPUT)util/cpumap.o LIB_OBJS += $(OUTPUT)util/cgroup.o +LIB_OBJS += $(OUTPUT)util/target.o BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 7e226c0e0e31..14f1034f14f9 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -207,14 +207,7 @@ extern const char perf_version_string[]; void pthread__unblock_sigwinch(void); -struct perf_target { - const char *pid; - const char *tid; - const char *cpu_list; - const char *uid_str; - uid_t uid; - bool system_wide; -}; +#include "util/target.h" struct perf_record_opts { struct perf_target target; diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a43e2c56d1c6..30328623cae6 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -11,6 +11,7 @@ #include #include "cpumap.h" #include "thread_map.h" +#include "target.h" #include "evlist.h" #include "evsel.h" #include diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index d90598edcf1d..bb785a098ced 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -14,6 +14,7 @@ #include "util.h" #include "cpumap.h" #include "thread_map.h" +#include "target.h" #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) #define GROUP_FD(group_fd, cpu) (*(int *)xyarray__entry(group_fd, cpu, 0)) diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c new file mode 100644 index 000000000000..3fadf85dd7e3 --- /dev/null +++ b/tools/perf/util/target.c @@ -0,0 +1,45 @@ +/* + * Helper functions for handling target threads/cpus + * + * Copyright (C) 2012, LG Electronics, Namhyung Kim + * + * Released under the GPL v2. + */ + +#include "target.h" +#include "debug.h" + + +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; + } + + /* UID and CPU are mutually exclusive */ + if (target->uid_str && target->cpu_list) { + ui__warning("UID switch overriding CPU\n"); + sleep(1); + target->cpu_list = NULL; + } + + /* PID/UID and SYSTEM are mutually exclusive */ + if ((target->tid || target->uid_str) && target->system_wide) { + ui__warning("PID/TID/UID switch overriding CPU\n"); + sleep(1); + target->system_wide = false; + } +} diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h new file mode 100644 index 000000000000..218291f921ed --- /dev/null +++ b/tools/perf/util/target.h @@ -0,0 +1,18 @@ +#ifndef _PERF_TARGET_H +#define _PERF_TARGET_H + +#include +#include + +struct perf_target { + const char *pid; + const char *tid; + const char *cpu_list; + const char *uid_str; + uid_t uid; + bool system_wide; +}; + +void perf_target__validate(struct perf_target *target); + +#endif /* _PERF_TARGET_H */ diff --git a/tools/perf/util/usage.c b/tools/perf/util/usage.c index 228f0a558872..e851abc22ccc 100644 --- a/tools/perf/util/usage.c +++ b/tools/perf/util/usage.c @@ -113,37 +113,3 @@ uid_t parse_target_uid(const char *str) 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; - } - - /* UID and CPU are mutually exclusive */ - if (target->uid_str && target->cpu_list) { - ui__warning("UID switch overriding CPU\n"); - sleep(1); - target->cpu_list = NULL; - } - - /* PID/UID and SYSTEM are mutually exclusive */ - if ((target->tid || target->uid_str) && target->system_wide) { - ui__warning("PID/TID/UID switch overriding CPU\n"); - sleep(1); - target->system_wide = false; - } -} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 3f05d6264dab..52be74c359d3 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -246,12 +246,10 @@ 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); -void perf_target__validate(struct perf_target *target); #define _STR(x) #x #define STR(x) _STR(x) -- cgit v1.2.3 From dfe78adaaca90417ece98edbd3eb1c9661334406 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 7 May 2012 14:09:01 +0900 Subject: perf target: Introduce perf_target__parse_uid() Add and use the modern perf_target__parse_uid() and get rid of the old parse_target_uid(). 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/1336367344-28071-5-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 4 +--- tools/perf/builtin-top.c | 3 +-- tools/perf/util/target.c | 35 +++++++++++++++++++++++++++++++++++ tools/perf/util/target.h | 5 +++++ tools/perf/util/usage.c | 31 ------------------------------- tools/perf/util/util.h | 3 --- 6 files changed, 42 insertions(+), 39 deletions(-) (limited to 'tools/perf/util/util.h') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index d16590942cec..d26a279796d9 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -886,9 +886,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used) 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) + if (perf_target__parse_uid(&rec->opts.target) < 0) goto out_free_fd; if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index e40f86ea3641..c9137ba580d9 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1254,8 +1254,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used) 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) + if (perf_target__parse_uid(&top.target) < 0) goto out_delete_evlist; if (top.target.tid == 0 && top.target.pid == 0 && diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c index 5c59dcfc8f8d..02a6bedb69a3 100644 --- a/tools/perf/util/target.c +++ b/tools/perf/util/target.c @@ -9,6 +9,8 @@ #include "target.h" #include "debug.h" +#include + enum perf_target_errno perf_target__validate(struct perf_target *target) { @@ -54,3 +56,36 @@ enum perf_target_errno perf_target__validate(struct perf_target *target) return ret; } + +enum perf_target_errno perf_target__parse_uid(struct perf_target *target) +{ + struct passwd pwd, *result; + char buf[1024]; + const char *str = target->uid_str; + + target->uid = UINT_MAX; + if (str == NULL) + return PERF_ERRNO_TARGET__SUCCESS; + + /* Try user name first */ + getpwnam_r(str, &pwd, buf, sizeof(buf), &result); + + if (result == NULL) { + /* + * The user name not found. Maybe it's a UID number. + */ + char *endptr; + int uid = strtol(str, &endptr, 10); + + if (*endptr != '\0') + return PERF_ERRNO_TARGET__INVALID_UID; + + getpwuid_r(uid, &pwd, buf, sizeof(buf), &result); + + if (result == NULL) + return PERF_ERRNO_TARGET__USER_NOT_FOUND; + } + + target->uid = result->pw_uid; + return PERF_ERRNO_TARGET__SUCCESS; +} diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h index eb0d2101154a..d4aabdaba42a 100644 --- a/tools/perf/util/target.h +++ b/tools/perf/util/target.h @@ -33,9 +33,14 @@ enum perf_target_errno { PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM, PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM, + /* for perf_target__parse_uid() */ + PERF_ERRNO_TARGET__INVALID_UID, + PERF_ERRNO_TARGET__USER_NOT_FOUND, + __PERF_ERRNO_TARGET__END, }; enum perf_target_errno perf_target__validate(struct perf_target *target); +enum perf_target_errno perf_target__parse_uid(struct perf_target *target); #endif /* _PERF_TARGET_H */ diff --git a/tools/perf/util/usage.c b/tools/perf/util/usage.c index e851abc22ccc..4007aca8e0ca 100644 --- a/tools/perf/util/usage.c +++ b/tools/perf/util/usage.c @@ -82,34 +82,3 @@ void warning(const char *warn, ...) warn_routine(warn, params); va_end(params); } - -uid_t parse_target_uid(const char *str) -{ - struct passwd pwd, *result; - char buf[1024]; - - if (str == NULL) - return UINT_MAX; - - getpwnam_r(str, &pwd, buf, sizeof(buf), &result); - - if (result == NULL) { - char *endptr; - int uid = strtol(str, &endptr, 10); - - if (*endptr != '\0') { - ui__error("Invalid user %s\n", str); - return UINT_MAX - 1; - } - - getpwuid_r(uid, &pwd, buf, sizeof(buf), &result); - - if (result == NULL) { - ui__error("Problems obtaining information for user %s\n", - str); - return UINT_MAX - 1; - } - } - - return result->pw_uid; -} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 52be74c359d3..27a11a78ad39 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -74,7 +74,6 @@ #include #include #include -#include #include #include "../../../include/linux/magic.h" #include "types.h" @@ -249,8 +248,6 @@ struct perf_event_attr; void event_attr_init(struct perf_event_attr *attr); -uid_t parse_target_uid(const char *str); - #define _STR(x) #x #define STR(x) _STR(x) -- cgit v1.2.3