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-rw-r--r--tools/perf/Makefile3
-rw-r--r--tools/perf/builtin-annotate.c15
-rw-r--r--tools/perf/builtin-buildid-list.c55
-rw-r--r--tools/perf/builtin-kmem.c13
-rw-r--r--tools/perf/builtin-record.c25
-rw-r--r--tools/perf/builtin-report.c20
-rw-r--r--tools/perf/builtin-sched.c13
-rw-r--r--tools/perf/builtin-timechart.c15
-rw-r--r--tools/perf/builtin-trace.c20
-rw-r--r--tools/perf/util/data_map.c71
-rw-r--r--tools/perf/util/data_map.h9
-rw-r--r--tools/perf/util/header.c28
-rw-r--r--tools/perf/util/header.h4
-rw-r--r--tools/perf/util/session.c80
-rw-r--r--tools/perf/util/session.h16
15 files changed, 206 insertions, 181 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index e2ee3b5..4069996 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -356,7 +356,9 @@ LIB_H += util/parse-options.h
LIB_H += util/parse-events.h
LIB_H += util/quote.h
LIB_H += util/util.h
+LIB_H += util/header.h
LIB_H += util/help.h
+LIB_H += util/session.h
LIB_H += util/strbuf.h
LIB_H += util/string.h
LIB_H += util/strlist.h
@@ -405,6 +407,7 @@ LIB_OBJS += util/callchain.o
LIB_OBJS += util/values.o
LIB_OBJS += util/debug.o
LIB_OBJS += util/map.o
+LIB_OBJS += util/session.o
LIB_OBJS += util/thread.o
LIB_OBJS += util/trace-event-parse.o
LIB_OBJS += util/trace-event-read.o
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 0bf2e8f9..21a78d3 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -25,6 +25,7 @@
#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"
+#include "util/session.h"
#include "util/data_map.h"
static char const *input_name = "perf.data";
@@ -462,21 +463,23 @@ static struct perf_file_handler file_handler = {
static int __cmd_annotate(void)
{
- struct perf_header *header;
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
struct thread *idle;
int ret;
+ if (session == NULL)
+ return -ENOMEM;
+
idle = register_idle_thread();
register_perf_file_handler(&file_handler);
- ret = mmap_dispatch_perf_file(&header, input_name, 0, 0,
- &event__cwdlen, &event__cwd);
+ ret = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
if (ret)
- return ret;
+ goto out_delete;
if (dump_trace) {
event__print_totals();
- return 0;
+ goto out_delete;
}
if (verbose > 3)
@@ -489,6 +492,8 @@ static int __cmd_annotate(void)
output__resort(event__total[0]);
find_annotations();
+out_delete:
+ perf_session__delete(session);
return ret;
}
diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index dcb6143..bfd16a1 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -11,8 +11,8 @@
#include "util/cache.h"
#include "util/data_map.h"
#include "util/debug.h"
-#include "util/header.h"
#include "util/parse-options.h"
+#include "util/session.h"
#include "util/symbol.h"
static char const *input_name = "perf.data";
@@ -55,56 +55,17 @@ static int perf_file_section__process_buildids(struct perf_file_section *self,
static int __cmd_buildid_list(void)
{
int err = -1;
- struct perf_header *header;
- struct perf_file_header f_header;
- struct stat input_stat;
- int input = open(input_name, O_RDONLY);
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
- if (input < 0) {
- pr_err("failed to open file: %s", input_name);
- if (!strcmp(input_name, "perf.data"))
- pr_err(" (try 'perf record' first)");
- pr_err("\n");
- goto out;
- }
-
- err = fstat(input, &input_stat);
- if (err < 0) {
- perror("failed to stat file");
- goto out_close;
- }
-
- if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
- pr_err("file %s not owned by current user or root\n",
- input_name);
- goto out_close;
- }
-
- if (!input_stat.st_size) {
- pr_info("zero-sized file, nothing to do!\n");
- goto out_close;
- }
-
- err = -1;
- header = perf_header__new();
- if (header == NULL)
- goto out_close;
-
- if (perf_file_header__read(&f_header, header, input) < 0) {
- pr_warning("incompatible file format");
- goto out_close;
- }
+ if (session == NULL)
+ return -1;
- err = perf_header__process_sections(header, input,
+ err = perf_header__process_sections(&session->header, session->fd,
perf_file_section__process_buildids);
+ if (err >= 0)
+ dsos__fprintf_buildid(stdout);
- if (err < 0)
- goto out_close;
-
- dsos__fprintf_buildid(stdout);
-out_close:
- close(input);
-out:
+ perf_session__delete(session);
return err;
}
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index fe73435..2071d24 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -6,6 +6,7 @@
#include "util/symbol.h"
#include "util/thread.h"
#include "util/header.h"
+#include "util/session.h"
#include "util/parse-options.h"
#include "util/trace-event.h"
@@ -20,7 +21,6 @@ typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
static char const *input_name = "perf.data";
-static struct perf_header *header;
static u64 sample_type;
static int alloc_flag;
@@ -367,11 +367,18 @@ static struct perf_file_handler file_handler = {
static int read_events(void)
{
+ int err;
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
+
+ if (session == NULL)
+ return -ENOMEM;
+
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, 0, 0,
- &event__cwdlen, &event__cwd);
+ err = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+ perf_session__delete(session);
+ return err;
}
static double fragmentation(unsigned long n_req, unsigned long n_alloc)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 0e519c6..4decbd1 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -17,6 +17,7 @@
#include "util/header.h"
#include "util/event.h"
#include "util/debug.h"
+#include "util/session.h"
#include "util/symbol.h"
#include <unistd.h>
@@ -62,7 +63,7 @@ static int nr_cpu = 0;
static int file_new = 1;
-struct perf_header *header = NULL;
+static struct perf_session *session;
struct mmap_data {
int counter;
@@ -216,12 +217,12 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
{
struct perf_header_attr *h_attr;
- if (nr < header->attrs) {
- h_attr = header->attr[nr];
+ if (nr < session->header.attrs) {
+ h_attr = session->header.attr[nr];
} else {
h_attr = perf_header_attr__new(a);
if (h_attr != NULL)
- if (perf_header__add_attr(header, h_attr) < 0) {
+ if (perf_header__add_attr(&session->header, h_attr) < 0) {
perf_header_attr__delete(h_attr);
h_attr = NULL;
}
@@ -395,9 +396,9 @@ static void open_counters(int cpu, pid_t pid)
static void atexit_header(void)
{
- header->data_size += bytes_written;
+ session->header.data_size += bytes_written;
- perf_header__write(header, output, true);
+ perf_header__write(&session->header, output, true);
}
static int __cmd_record(int argc, const char **argv)
@@ -440,24 +441,24 @@ static int __cmd_record(int argc, const char **argv)
exit(-1);
}
- header = perf_header__new();
- if (header == NULL) {
+ session = perf_session__new(output_name, O_WRONLY, force);
+ if (session == NULL) {
pr_err("Not enough memory for reading perf file header\n");
return -1;
}
if (!file_new) {
- err = perf_header__read(header, output);
+ err = perf_header__read(&session->header, output);
if (err < 0)
return err;
}
if (raw_samples) {
- perf_header__set_feat(header, HEADER_TRACE_INFO);
+ perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
} else {
for (i = 0; i < nr_counters; i++) {
if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
- perf_header__set_feat(header, HEADER_TRACE_INFO);
+ perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
break;
}
}
@@ -481,7 +482,7 @@ static int __cmd_record(int argc, const char **argv)
}
if (file_new) {
- err = perf_header__write(header, output, false);
+ err = perf_header__write(&session->header, output, false);
if (err < 0)
return err;
}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2b9eb3a..e2ec49a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -22,6 +22,7 @@
#include "perf.h"
#include "util/debug.h"
#include "util/header.h"
+#include "util/session.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
@@ -52,7 +53,7 @@ static int exclude_other = 1;
static char callchain_default_opt[] = "fractal,0.5";
-static struct perf_header *header;
+static struct perf_session *session;
static u64 sample_type;
@@ -701,7 +702,7 @@ static int process_read_event(event_t *event)
{
struct perf_event_attr *attr;
- attr = perf_header__find_attr(event->read.id, header);
+ attr = perf_header__find_attr(event->read.id, &session->header);
if (show_threads) {
const char *name = attr ? __event_name(attr->type, attr->config)
@@ -766,6 +767,10 @@ static int __cmd_report(void)
struct thread *idle;
int ret;
+ session = perf_session__new(input_name, O_RDONLY, force);
+ if (session == NULL)
+ return -ENOMEM;
+
idle = register_idle_thread();
thread__comm_adjust(idle);
@@ -774,14 +779,14 @@ static int __cmd_report(void)
register_perf_file_handler(&file_handler);
- ret = mmap_dispatch_perf_file(&header, input_name, force,
- full_paths, &event__cwdlen, &event__cwd);
+ ret = perf_session__process_events(session, full_paths,
+ &event__cwdlen, &event__cwd);
if (ret)
- return ret;
+ goto out_delete;
if (dump_trace) {
event__print_totals();
- return 0;
+ goto out_delete;
}
if (verbose > 3)
@@ -796,7 +801,8 @@ static int __cmd_report(void)
if (show_threads)
perf_read_values_destroy(&show_threads_values);
-
+out_delete:
+ perf_session__delete(session);
return ret;
}
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 7cca7c1..65021fe 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -6,6 +6,7 @@
#include "util/symbol.h"
#include "util/thread.h"
#include "util/header.h"
+#include "util/session.h"
#include "util/parse-options.h"
#include "util/trace-event.h"
@@ -21,7 +22,6 @@
static char const *input_name = "perf.data";
-static struct perf_header *header;
static u64 sample_type;
static char default_sort_order[] = "avg, max, switch, runtime";
@@ -1663,11 +1663,18 @@ static struct perf_file_handler file_handler = {
static int read_events(void)
{
+ int err;
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
+
+ if (session == NULL)
+ return -ENOMEM;
+
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, 0, 0,
- &event__cwdlen, &event__cwd);
+ err = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+ perf_session__delete(session);
+ return err;
}
static void print_bad_events(void)
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index f472df9..759dd2b 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1059,15 +1059,17 @@ static struct perf_file_handler file_handler = {
static int __cmd_timechart(void)
{
- struct perf_header *header;
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
int ret;
+ if (session == NULL)
+ return -ENOMEM;
+
register_perf_file_handler(&file_handler);
- ret = mmap_dispatch_perf_file(&header, input_name, 0, 0,
- &event__cwdlen, &event__cwd);
+ ret = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
if (ret)
- return EXIT_FAILURE;
+ goto out_delete;
process_samples();
@@ -1079,8 +1081,9 @@ static int __cmd_timechart(void)
pr_info("Written %2.1f seconds of trace to %s.\n",
(last_time - first_time) / 1000000000.0, output_name);
-
- return EXIT_SUCCESS;
+out_delete:
+ perf_session__delete(session);
+ return ret;
}
static const char * const timechart_usage[] = {
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c2fcc34..0756664 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -7,6 +7,7 @@
#include "util/header.h"
#include "util/exec_cmd.h"
#include "util/trace-event.h"
+#include "util/session.h"
static char const *script_name;
static char const *generate_script_lang;
@@ -61,7 +62,7 @@ static int cleanup_scripting(void)
static char const *input_name = "perf.data";
-static struct perf_header *header;
+static struct perf_session *session;
static u64 sample_type;
static int process_sample_event(event_t *event)
@@ -126,11 +127,18 @@ static struct perf_file_handler file_handler = {
static int __cmd_trace(void)
{
+ int err;
+
+ session = perf_session__new(input_name, O_RDONLY, 0);
+ if (session == NULL)
+ return -ENOMEM;
+
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name,
- 0, 0, &event__cwdlen, &event__cwd);
+ err = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+ perf_session__delete(session);
+ return err;
}
struct script_spec {
@@ -348,11 +356,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
return -1;
}
- header = perf_header__new();
- if (header == NULL)
- return -1;
-
- perf_header__read(header, input);
+ perf_header__read(&session->header, input);
err = scripting_ops->generate_script("perf-trace");
goto out;
}
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index 59b65d0..6d46dda 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -129,23 +129,16 @@ out:
return err;
}
-int mmap_dispatch_perf_file(struct perf_header **pheader,
- const char *input_name,
- int force,
- int full_paths,
- int *cwdlen,
- char **cwd)
+int perf_session__process_events(struct perf_session *self,
+ int full_paths, int *cwdlen, char **cwd)
{
int err;
- struct perf_header *header;
unsigned long head, shift;
unsigned long offset = 0;
- struct stat input_stat;
size_t page_size;
u64 sample_type;
event_t *event;
uint32_t size;
- int input;
char *buf;
if (curr_handler == NULL) {
@@ -155,56 +148,19 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
page_size = getpagesize();
- input = open(input_name, O_RDONLY);
- if (input < 0) {
- pr_err("Failed to open file: %s", input_name);
- if (!strcmp(input_name, "perf.data"))
- pr_err(" (try 'perf record' first)");
- pr_err("\n");
- return -errno;
- }
-
- if (fstat(input, &input_stat) < 0) {
- pr_err("failed to stat file");
- err = -errno;
- goto out_close;
- }
-
- err = -EACCES;
- if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
- pr_err("file: %s not owned by current user or root\n",
- input_name);
- goto out_close;
- }
-
- if (input_stat.st_size == 0) {
- pr_info("zero-sized file, nothing to do!\n");
- goto done;
- }
-
- err = -ENOMEM;
- header = perf_header__new();
- if (header == NULL)
- goto out_close;
-
- err = perf_header__read(header, input);
- if (err < 0)
- goto out_delete;
- *pheader = header;
- head = header->data_offset;
-
- sample_type = perf_header__sample_type(header);
+ head = self->header.data_offset;
+ sample_type = perf_header__sample_type(&self->header);
err = -EINVAL;
if (curr_handler->sample_type_check &&
curr_handler->sample_type_check(sample_type) < 0)
- goto out_delete;
+ goto out_err;
if (!full_paths) {
if (getcwd(__cwd, sizeof(__cwd)) == NULL) {
pr_err("failed to get the current directory\n");
err = -errno;
- goto out_delete;
+ goto out_err;
}
*cwd = __cwd;
*cwdlen = strlen(*cwd);
@@ -219,11 +175,11 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
remap:
buf = mmap(NULL, page_size * mmap_window, PROT_READ,
- MAP_SHARED, input, offset);
+ MAP_SHARED, self->fd, offset);
if (buf == MAP_FAILED) {
pr_err("failed to mmap file\n");
err = -errno;
- goto out_delete;
+ goto out_err;
}
more:
@@ -273,19 +229,14 @@ more:
head += size;
- if (offset + head >= header->data_offset + header->data_size)
+ if (offset + head >= self->header.data_offset + self->header.data_size)
goto done;
- if (offset + head < (unsigned long)input_stat.st_size)
+ if (offset + head < self->size)
goto more;
done:
err = 0;
-out_close:
- close(input);
-
+out_err:
return err;
-out_delete:
- perf_header__delete(header);
- goto out_close;
}
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index 258a87b..98c5b82 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -3,6 +3,7 @@
#include "event.h"
#include "header.h"
+#include "session.h"
typedef int (*event_type_handler_t)(event_t *);
@@ -21,12 +22,8 @@ struct perf_file_handler {
};
void register_perf_file_handler(struct perf_file_handler *handler);
-int mmap_dispatch_perf_file(struct perf_header **pheader,
- const char *input_name,
- int force,
- int full_paths,
- int *cwdlen,
- char **cwd);
+int perf_session__process_events(struct perf_session *self,
+ int full_paths, int *cwdlen, char **cwd);
int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
#endif
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 59a9c0b..f2e8d87 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -58,35 +58,19 @@ int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
return 0;
}
-/*
- * Create new perf.data header:
- */
-struct perf_header *perf_header__new(void)
+int perf_header__init(struct perf_header *self)
{
- struct perf_header *self = zalloc(sizeof(*self));
-
- if (self != NULL) {
- self->size = 1;
- self->attr = malloc(sizeof(void *));
-
- if (self->attr == NULL) {
- free(self);
- self = NULL;
- }
- }
-
- return self;
+ self->size = 1;
+ self->attr = malloc(sizeof(void *));
+ return self->attr == NULL ? -ENOMEM : 0;
}
-void perf_header__delete(struct perf_header *self)
+void perf_header__exit(struct perf_header *self)
{
int i;
-
for (i = 0; i < self->attrs; ++i)
- perf_header_attr__delete(self->attr[i]);
-
+ perf_header_attr__delete(self->attr[i]);
free(self->attr);
- free(self);
}
int perf_header__add_attr(struct perf_header *self,
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index d1dbe2b..d118d05 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -55,8 +55,8 @@ struct perf_header {
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
-struct perf_header *perf_header__new(void);
-void perf_header__delete(struct perf_header *self);
+int perf_header__init(struct perf_header *self);
+void perf_header__exit(struct perf_header *self);
int perf_header__read(struct perf_header *self, int fd);
int perf_header__write(struct perf_header *self, int fd, bool at_exit);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
new file mode 100644
index 0000000..707ce1c
--- /dev/null
+++ b/tools/perf/util/session.c
@@ -0,0 +1,80 @@
+#include <linux/kernel.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "session.h"
+#include "util.h"
+
+static int perf_session__open(struct perf_session *self, bool force)
+{
+ struct stat input_stat;
+
+ self->fd = open(self->filename, O_RDONLY);
+ if (self->fd < 0) {
+ pr_err("failed to open file: %s", self->filename);
+ if (!strcmp(self->filename, "perf.data"))
+ pr_err(" (try 'perf record' first)");
+ pr_err("\n");
+ return -errno;
+ }
+
+ if (fstat(self->fd, &input_stat) < 0)
+ goto out_close;
+
+ if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
+ pr_err("file %s not owned by current user or root\n",
+ self->filename);
+ goto out_close;
+ }
+
+ if (!input_stat.st_size) {
+ pr_info("zero-sized file (%s), nothing to do!\n",
+ self->filename);
+ goto out_close;
+ }
+
+ if (perf_header__read(&self->header, self->fd) < 0) {
+ pr_err("incompatible file format");
+ goto out_close;
+ }
+
+ self->size = input_stat.st_size;
+ return 0;
+
+out_close:
+ close(self->fd);
+ self->fd = -1;
+ return -1;
+}
+
+struct perf_session *perf_session__new(const char *filename, int mode, bool force)
+{
+ size_t len = strlen(filename) + 1;
+ struct perf_session *self = zalloc(sizeof(*self) + len);
+
+ if (self == NULL)
+ goto out;
+
+ if (perf_header__init(&self->header) < 0)
+ goto out_delete;
+
+ memcpy(self->filename, filename, len);
+
+ if (mode == O_RDONLY && perf_session__open(self, force) < 0) {
+ perf_session__delete(self);
+ self = NULL;
+ }
+out:
+ return self;
+out_delete:
+ free(self);
+ return NULL;
+}
+
+void perf_session__delete(struct perf_session *self)
+{
+ perf_header__exit(&self->header);
+ close(self->fd);
+ free(self);
+}
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
new file mode 100644
index 0000000..f3699c8
--- /dev/null
+++ b/tools/perf/util/session.h
@@ -0,0 +1,16 @@
+#ifndef __PERF_SESSION_H
+#define __PERF_SESSION_H
+
+#include "header.h"
+
+struct perf_session {
+ struct perf_header header;
+ unsigned long size;
+ int fd;
+ char filename[0];
+};
+
+struct perf_session *perf_session__new(const char *filename, int mode, bool force);
+void perf_session__delete(struct perf_session *self);
+
+#endif /* __PERF_SESSION_H */
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