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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1d9f8d1b82
Currently, if we execute 'perf stat --per-thread' without specifying
pid/tid, perf will return error.
root@skl:/tmp# perf stat --per-thread
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
This patch removes this limitation. If no pid/tid specified, it returns
all threads (get threads from /proc).
Note that it doesn't support cpu_list yet so if it's a cpu_list case,
then skip.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-11-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_TARGET_H
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#define _PERF_TARGET_H
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#include <stdbool.h>
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#include <sys/types.h>
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struct target {
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const char *pid;
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const char *tid;
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const char *cpu_list;
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const char *uid_str;
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uid_t uid;
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bool system_wide;
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bool uses_mmap;
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bool default_per_cpu;
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bool per_thread;
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};
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enum target_errno {
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TARGET_ERRNO__SUCCESS = 0,
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/*
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* Choose an arbitrary negative big number not to clash with standard
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* errno since SUS requires the errno has distinct positive values.
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* See 'Issue 6' in the link below.
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*
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* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
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*/
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__TARGET_ERRNO__START = -10000,
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/* for target__validate() */
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TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,
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TARGET_ERRNO__PID_OVERRIDE_UID,
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TARGET_ERRNO__UID_OVERRIDE_CPU,
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TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
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TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
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TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
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/* for target__parse_uid() */
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TARGET_ERRNO__INVALID_UID,
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TARGET_ERRNO__USER_NOT_FOUND,
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__TARGET_ERRNO__END,
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};
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enum target_errno target__validate(struct target *target);
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enum target_errno target__parse_uid(struct target *target);
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int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
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static inline bool target__has_task(struct target *target)
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{
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return target->tid || target->pid || target->uid_str;
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}
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static inline bool target__has_cpu(struct target *target)
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{
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return target->system_wide || target->cpu_list;
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}
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static inline bool target__none(struct target *target)
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{
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return !target__has_task(target) && !target__has_cpu(target);
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}
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static inline bool target__has_per_thread(struct target *target)
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{
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return target->system_wide && target->per_thread;
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}
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static inline bool target__uses_dummy_map(struct target *target)
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{
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bool use_dummy = false;
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if (target->default_per_cpu)
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use_dummy = target->per_thread ? true : false;
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else if (target__has_task(target) ||
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(!target__has_cpu(target) && !target->uses_mmap))
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use_dummy = true;
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else if (target__has_per_thread(target))
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use_dummy = true;
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return use_dummy;
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}
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#endif /* _PERF_TARGET_H */
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