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-rw-r--r--tools/perf/util/target.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h
new file mode 100644
index 000000000..6ef01a83b
--- /dev/null
+++ b/tools/perf/util/target.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PERF_TARGET_H
+#define _PERF_TARGET_H
+
+#include <stdbool.h>
+#include <sys/types.h>
+
+struct target {
+ const char *pid;
+ const char *tid;
+ const char *cpu_list;
+ const char *uid_str;
+ uid_t uid;
+ bool system_wide;
+ bool uses_mmap;
+ bool default_per_cpu;
+ bool per_thread;
+};
+
+enum target_errno {
+ TARGET_ERRNO__SUCCESS = 0,
+
+ /*
+ * Choose an arbitrary negative big number not to clash with standard
+ * errno since SUS requires the errno has distinct positive values.
+ * See 'Issue 6' in the link below.
+ *
+ * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+ */
+ __TARGET_ERRNO__START = -10000,
+
+ /* for target__validate() */
+ TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,
+ TARGET_ERRNO__PID_OVERRIDE_UID,
+ TARGET_ERRNO__UID_OVERRIDE_CPU,
+ TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
+ TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
+ TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
+
+ /* for target__parse_uid() */
+ TARGET_ERRNO__INVALID_UID,
+ TARGET_ERRNO__USER_NOT_FOUND,
+
+ __TARGET_ERRNO__END,
+};
+
+enum target_errno target__validate(struct target *target);
+enum target_errno target__parse_uid(struct target *target);
+
+int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
+
+static inline bool target__has_task(struct target *target)
+{
+ return target->tid || target->pid || target->uid_str;
+}
+
+static inline bool target__has_cpu(struct target *target)
+{
+ return target->system_wide || target->cpu_list;
+}
+
+static inline bool target__none(struct target *target)
+{
+ return !target__has_task(target) && !target__has_cpu(target);
+}
+
+static inline bool target__has_per_thread(struct target *target)
+{
+ return target->system_wide && target->per_thread;
+}
+
+static inline bool target__uses_dummy_map(struct target *target)
+{
+ bool use_dummy = false;
+
+ if (target->default_per_cpu)
+ use_dummy = target->per_thread ? true : false;
+ else if (target__has_task(target) ||
+ (!target__has_cpu(target) && !target->uses_mmap))
+ use_dummy = true;
+ else if (target__has_per_thread(target))
+ use_dummy = true;
+
+ return use_dummy;
+}
+
+#endif /* _PERF_TARGET_H */