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Diffstat (limited to 'tools/perf/util/machine.h')
-rw-r--r--tools/perf/util/machine.h34
1 files changed, 26 insertions, 8 deletions
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 3cdb1340f917..5ce860b64c74 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_MACHINE_H
#define __PERF_MACHINE_H
@@ -6,6 +7,7 @@
#include "map.h"
#include "dso.h"
#include "event.h"
+#include "rwsem.h"
struct addr_location;
struct branch_stack;
@@ -23,6 +25,17 @@ extern const char *ref_reloc_sym_names[];
struct vdso_info;
+#define THREADS__TABLE_BITS 8
+#define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
+
+struct threads {
+ struct rb_root entries;
+ struct rw_semaphore lock;
+ unsigned int nr;
+ struct list_head dead;
+ struct thread *last_match;
+};
+
struct machine {
struct rb_node rb_node;
pid_t pid;
@@ -30,11 +43,7 @@ struct machine {
bool comm_exec;
bool kptr_restrict_warned;
char *root_dir;
- struct rb_root threads;
- pthread_rwlock_t threads_lock;
- unsigned int nr_threads;
- struct list_head dead_threads;
- struct thread *last_match;
+ struct threads threads[THREADS__TABLE_SIZE];
struct vdso_info *vdso_info;
struct perf_env *env;
struct dsos dsos;
@@ -48,6 +57,12 @@ struct machine {
};
};
+static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
+{
+ /* Cast it to handle tid == -1 */
+ return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
+}
+
static inline
struct map *__machine__kernel_map(struct machine *machine, enum map_type type)
{
@@ -243,15 +258,18 @@ int machines__for_each_thread(struct machines *machines,
int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
struct target *target, struct thread_map *threads,
perf_event__handler_t process, bool data_mmap,
- unsigned int proc_map_timeout);
+ unsigned int proc_map_timeout,
+ unsigned int nr_threads_synthesize);
static inline
int machine__synthesize_threads(struct machine *machine, struct target *target,
struct thread_map *threads, bool data_mmap,
- unsigned int proc_map_timeout)
+ unsigned int proc_map_timeout,
+ unsigned int nr_threads_synthesize)
{
return __machine__synthesize_threads(machine, NULL, target, threads,
perf_event__process, data_mmap,
- proc_map_timeout);
+ proc_map_timeout,
+ nr_threads_synthesize);
}
pid_t machine__get_current_tid(struct machine *machine, int cpu);