From 364794845cbc49e638b83d7ef739524291e1e961 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 24 Nov 2009 12:05:16 -0200 Subject: [PATCH] perf tools: Introduce zalloc() for the common calloc(1, N) case MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This way we type less characters and it looks more like the kzalloc kernel counterpart. Signed-off-by: Arnaldo Carvalho de Melo Cc: Frédéric Weisbecker Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras LKML-Reference: <1259071517-3242-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar --- tools/perf/bench/mem-memcpy.c | 4 ++-- tools/perf/builtin-help.c | 4 ++-- tools/perf/builtin-probe.c | 4 ++-- tools/perf/builtin-sched.c | 14 +++++--------- tools/perf/builtin-top.c | 2 +- tools/perf/util/header.c | 2 +- tools/perf/util/parse-events.c | 2 +- tools/perf/util/symbol.c | 11 +++++------ tools/perf/util/thread.c | 2 +- tools/perf/util/util.h | 5 +++++ 10 files changed, 25 insertions(+), 25 deletions(-) diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c index 5165fd1d8d2..89773178e89 100644 --- a/tools/perf/bench/mem-memcpy.c +++ b/tools/perf/bench/mem-memcpy.c @@ -127,11 +127,11 @@ int bench_mem_memcpy(int argc, const char **argv, return 1; } - dst = calloc(length, sizeof(char)); + dst = zalloc(length); if (!dst) die("memory allocation failed - maybe length is too large?\n"); - src = calloc(length, sizeof(char)); + src = zalloc(length); if (!src) die("memory allocation failed - maybe length is too large?\n"); diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c index 768f9c82631..9f810b17c25 100644 --- a/tools/perf/builtin-help.c +++ b/tools/perf/builtin-help.c @@ -179,7 +179,7 @@ static void add_man_viewer(const char *name) while (*p) p = &((*p)->next); - *p = calloc(1, (sizeof(**p) + len + 1)); + *p = zalloc(sizeof(**p) + len + 1); strncpy((*p)->name, name, len); } @@ -194,7 +194,7 @@ static void do_add_man_viewer_info(const char *name, size_t len, const char *value) { - struct man_viewer_info_list *new = calloc(1, sizeof(*new) + len + 1); + struct man_viewer_info_list *new = zalloc(sizeof(*new) + len + 1); strncpy(new->name, name, len); new->info = strdup(value); diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index d78a3d94549..a2f6daf01ec 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -309,9 +309,9 @@ static int synthesize_probe_event(struct probe_point *pp) { char *buf; int i, len, ret; - pp->probes[0] = buf = (char *)calloc(MAX_CMDLEN, sizeof(char)); + pp->probes[0] = buf = zalloc(MAX_CMDLEN); if (!buf) - die("Failed to allocate memory by calloc."); + die("Failed to allocate memory by zalloc."); ret = snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset); if (ret <= 0 || ret >= MAX_CMDLEN) goto error; diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index dbf089b12de..19eb708a706 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -225,7 +225,7 @@ static void calibrate_sleep_measurement_overhead(void) static struct sched_atom * get_new_event(struct task_desc *task, u64 timestamp) { - struct sched_atom *event = calloc(1, sizeof(*event)); + struct sched_atom *event = zalloc(sizeof(*event)); unsigned long idx = task->nr_events; size_t size; @@ -293,7 +293,7 @@ add_sched_event_wakeup(struct task_desc *task, u64 timestamp, return; } - wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem)); + wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); sem_init(wakee_event->wait_sem, 0, 0); wakee_event->specific_wait = 1; event->wait_sem = wakee_event->wait_sem; @@ -323,7 +323,7 @@ static struct task_desc *register_pid(unsigned long pid, const char *comm) if (task) return task; - task = calloc(1, sizeof(*task)); + task = zalloc(sizeof(*task)); task->pid = pid; task->nr = nr_tasks; strcpy(task->comm, comm); @@ -962,9 +962,7 @@ __thread_latency_insert(struct rb_root *root, struct work_atoms *data, static void thread_atoms_insert(struct thread *thread) { - struct work_atoms *atoms; - - atoms = calloc(sizeof(*atoms), 1); + struct work_atoms *atoms = zalloc(sizeof(*atoms)); if (!atoms) die("No memory"); @@ -996,9 +994,7 @@ add_sched_out_event(struct work_atoms *atoms, char run_state, u64 timestamp) { - struct work_atom *atom; - - atom = calloc(sizeof(*atom), 1); + struct work_atom *atom = zalloc(sizeof(*atom)); if (!atom) die("Non memory"); diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index a21247543fc..4c8653a86aa 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -181,7 +181,7 @@ static void parse_source(struct sym_entry *syme) return; if (syme->src == NULL) { - syme->src = calloc(1, sizeof(*source)); + syme->src = zalloc(sizeof(*source)); if (syme->src == NULL) return; pthread_mutex_init(&syme->src->lock, NULL); diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 271a1600e6f..4b586569bb0 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -63,7 +63,7 @@ int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) */ struct perf_header *perf_header__new(void) { - struct perf_header *self = calloc(sizeof(*self), 1); + struct perf_header *self = zalloc(sizeof(*self)); if (self != NULL) { self->size = 1; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 07002746927..9e5dbd66d34 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -197,7 +197,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config) if (id == config) { closedir(evt_dir); closedir(sys_dir); - path = calloc(1, sizeof(path)); + path = zalloc(sizeof(path)); path->system = malloc(MAX_EVENT_LENGTH); if (!path->system) { free(path); diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index c4ca974b36e..8db85b4f553 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -94,15 +94,14 @@ static void kernel_maps__fixup_end(void) static struct symbol *symbol__new(u64 start, u64 len, const char *name) { size_t namelen = strlen(name) + 1; - struct symbol *self = calloc(1, (symbol__priv_size + - sizeof(*self) + namelen)); - if (!self) + struct symbol *self = zalloc(symbol__priv_size + + sizeof(*self) + namelen); + if (self == NULL) return NULL; - if (symbol__priv_size) { - memset(self, 0, symbol__priv_size); + if (symbol__priv_size) self = ((void *)self) + symbol__priv_size; - } + self->start = start; self->end = len ? start + len - 1 : start; diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 0f6d78c9863..1796625f778 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -11,7 +11,7 @@ static struct thread *last_match; static struct thread *thread__new(pid_t pid) { - struct thread *self = calloc(1, sizeof(*self)); + struct thread *self = zalloc(sizeof(*self)); if (self != NULL) { self->pid = pid; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index e1c623e0c99..30c5517f2f9 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -302,6 +302,11 @@ extern int xdup(int fd); extern FILE *xfdopen(int fd, const char *mode); extern int xmkstemp(char *template); +static inline void *zalloc(size_t size) +{ + return calloc(1, size); +} + static inline size_t xsize_t(off_t len) { return (size_t)len;