Messages in this thread Patch in this message | | | From | gpavithrasha@gmail ... | Subject | [PATCH v1 1/4] perf mutex: Wrapped usage of pthread_mutex_t | Date | Wed, 27 Jul 2022 16:49:51 +0530 |
| |
From: pavithra <gpavithrasha@gmail.com>
Added a new header file mutex.h that wraps the usage of pthread_mutex_t and updated lock in dso.h.
Signed-off-by: pavithra <gpavithrasha@gmail.com> --- tools/perf/util/Build | 1 + tools/perf/util/dso.c | 33 ++++++++++++++++----------------- tools/perf/util/dso.h | 3 ++- tools/perf/util/mutex.c | 32 ++++++++++++++++++++++++++++++++ tools/perf/util/mutex.h | 15 +++++++++++++++ tools/perf/util/symbol.c | 4 ++-- 6 files changed, 68 insertions(+), 20 deletions(-) create mode 100644 tools/perf/util/mutex.c create mode 100644 tools/perf/util/mutex.h
diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 8dcfca1a882f..559c20d94c36 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -120,6 +120,7 @@ perf-y += time-utils.o perf-y += expr-bison.o perf-y += branch.o perf-y += mem2node.o +perf-y += mutex.o perf-$(CONFIG_LIBBPF) += bpf-loader.o perf-$(CONFIG_LIBBPF) += bpf_map.o diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index e11ddf86f2b3..605c31585d48 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -426,7 +426,7 @@ void dso__set_module_info(struct dso *dso, struct kmod_path *m, */ static LIST_HEAD(dso__data_open); static long dso__data_open_cnt; -static pthread_mutex_t dso__data_open_lock = PTHREAD_MUTEX_INITIALIZER; +static struct mutex dso__data_open_lock = PTHREAD_MUTEX_INITIALIZER; static void dso__list_add(struct dso *dso) { @@ -633,9 +633,9 @@ static void check_data_close(void) */ void dso__data_close(struct dso *dso) { - pthread_mutex_lock(&dso__data_open_lock); + mutex_lock(&dso__data_open_lock); close_dso(dso); - pthread_mutex_unlock(&dso__data_open_lock); + mutex_unlock(&dso__data_open_lock); } static void try_to_open_dso(struct dso *dso, struct machine *machine) @@ -684,20 +684,19 @@ int dso__data_get_fd(struct dso *dso, struct machine *machine) if (dso->data.status == DSO_DATA_STATUS_ERROR) return -1; - if (pthread_mutex_lock(&dso__data_open_lock) < 0) - return -1; + mutex_lock(&dso__data_open_lock); try_to_open_dso(dso, machine); if (dso->data.fd < 0) - pthread_mutex_unlock(&dso__data_open_lock); + mutex_unlock(&dso__data_open_lock); return dso->data.fd; } void dso__data_put_fd(struct dso *dso __maybe_unused) { - pthread_mutex_unlock(&dso__data_open_lock); + mutex_unlock(&dso__data_open_lock); } bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by) @@ -756,7 +755,7 @@ dso_cache__free(struct dso *dso) struct rb_root *root = &dso->data.cache; struct rb_node *next = rb_first(root); - pthread_mutex_lock(&dso->lock); + mutex_lock(&dso->lock); while (next) { struct dso_cache *cache; @@ -765,7 +764,7 @@ dso_cache__free(struct dso *dso) rb_erase(&cache->rb_node, root); free(cache); } - pthread_mutex_unlock(&dso->lock); + mutex_unlock(&dso->lock); } static struct dso_cache *dso_cache__find(struct dso *dso, u64 offset) @@ -802,7 +801,7 @@ dso_cache__insert(struct dso *dso, struct dso_cache *new) struct dso_cache *cache; u64 offset = new->offset; - pthread_mutex_lock(&dso->lock); + mutex_lock(&dso->lock); while (*p != NULL) { u64 end; @@ -823,7 +822,7 @@ dso_cache__insert(struct dso *dso, struct dso_cache *new) cache = NULL; out: - pthread_mutex_unlock(&dso->lock); + mutex_unlock(&dso->lock); return cache; } @@ -843,7 +842,7 @@ static ssize_t file_read(struct dso *dso, struct machine *machine, { ssize_t ret; - pthread_mutex_lock(&dso__data_open_lock); + mutex_lock(&dso__data_open_lock); /* * dso->data.fd might be closed if other thread opened another @@ -859,7 +858,7 @@ static ssize_t file_read(struct dso *dso, struct machine *machine, ret = pread(dso->data.fd, data, DSO__DATA_CACHE_SIZE, offset); out: - pthread_mutex_unlock(&dso__data_open_lock); + mutex_unlock(&dso__data_open_lock); return ret; } @@ -953,7 +952,7 @@ static int file_size(struct dso *dso, struct machine *machine) struct stat st; char sbuf[STRERR_BUFSIZE]; - pthread_mutex_lock(&dso__data_open_lock); + mutex_lock(&dso__data_open_lock); /* * dso->data.fd might be closed if other thread opened another @@ -977,7 +976,7 @@ static int file_size(struct dso *dso, struct machine *machine) dso->data.file_size = st.st_size; out: - pthread_mutex_unlock(&dso__data_open_lock); + mutex_unlock(&dso__data_open_lock); return ret; } @@ -1192,7 +1191,7 @@ struct dso *dso__new(const char *name) dso->root = NULL; INIT_LIST_HEAD(&dso->node); INIT_LIST_HEAD(&dso->data.open_entry); - pthread_mutex_init(&dso->lock, NULL); + mutex_init(&dso->lock); refcount_set(&dso->refcnt, 1); } @@ -1226,7 +1225,7 @@ void dso__delete(struct dso *dso) dso__free_a2l(dso); zfree(&dso->symsrc_filename); nsinfo__zput(dso->nsinfo); - pthread_mutex_destroy(&dso->lock); + mutex_destroy(&dso->lock); free(dso); } diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index e4dddb76770d..e08b2ab48314 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -11,6 +11,7 @@ #include <stdio.h> #include <linux/bitops.h> #include "build-id.h" +#include "mutex.h" struct machine; struct map; @@ -132,7 +133,7 @@ struct dso_cache { struct auxtrace_cache; struct dso { - pthread_mutex_t lock; + struct mutex lock; struct list_head node; struct rb_node rb_node; /* rbtree node sorted by long name */ struct rb_root *root; /* root of rbtree that rb_node is in */ diff --git a/tools/perf/util/mutex.c b/tools/perf/util/mutex.c new file mode 100644 index 000000000000..b7264a1438c4 --- /dev/null +++ b/tools/perf/util/mutex.c @@ -0,0 +1,32 @@ +#include <mutex.h> +#include <pthread.h> + +//to avoid the warning : implicit declaration of BUG_ON, +//we add the following 2 headers. +#include <linux/compiler.h> +#include <linux/kernel.h> + +void mutex_init(struct mutex *mtx) +{ +pthread_mutexattr_t lock_attr; +pthread_mutexattr_init(&lock_attr); +pthread_mutexattr_settype(&lock_attr, PTHREAD_MUTEX_ERRORCHECK); +BUG_ON(pthread_mutex_init(&mtx->lock, &lock_attr)); +//on success, returns 0. +pthread_mutexattr_destroy(&lock_attr); +} + +void mutex_destroy(struct mutex *mtx) +{ +BUG_ON(pthread_mutex_destroy(&mtx->lock)); //on success, returns 0. +} + +void mutex_lock(struct mutex *mtx) +{ +BUG_ON(pthread_mutex_lock(&mtx->lock) != 0); +} + +void mutex_unlock(struct mutex *mtx) +{ +BUG_ON(pthread_mutex_unlock(&mtx->lock) != 0); +} diff --git a/tools/perf/util/mutex.h b/tools/perf/util/mutex.h new file mode 100644 index 000000000000..ab2ebb98b24a --- /dev/null +++ b/tools/perf/util/mutex.h @@ -0,0 +1,15 @@ +#ifndef __PERF_MUTEX_H +#define _PERF_MUTEX_H + +#include <pthread.h> + +struct mutex { +pthread_mutex_t lock; +}; + +void mutex_lock(struct mutex *mtx); +void mutex_unlock(struct mutex *mtx); +void mutex_init(struct mutex *mtx); +void mutex_destroy(struct mutex *mtx); + +#endif /* _PERF_MUTEX_H */ diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a8f80e427674..342be12cfa1e 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1629,7 +1629,7 @@ int dso__load(struct dso *dso, struct map *map) } nsinfo__mountns_enter(dso->nsinfo, &nsc); - pthread_mutex_lock(&dso->lock); + mutex_lock(&dso->lock); /* check again under the dso->lock */ if (dso__loaded(dso)) { @@ -1778,7 +1778,7 @@ int dso__load(struct dso *dso, struct map *map) ret = 0; out: dso__set_loaded(dso); - pthread_mutex_unlock(&dso->lock); + mutex_unlock(&dso->lock); nsinfo__mountns_exit(&nsc); return ret; -- 2.25.1
| |