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-rw-r--r--tools/perf/Documentation/perf-record.txt4
-rw-r--r--tools/perf/builtin-record.c82
-rw-r--r--tools/perf/util/header.c13
3 files changed, 11 insertions, 88 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index d4da111ef53d..7e3258066bc9 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -65,12 +65,10 @@ OPTIONS
-r::
--realtime=::
Collect data with this RT SCHED_FIFO priority.
+
-D::
--no-delay::
Collect data without buffering.
--A::
---append::
- Append to the output file to do incremental profiling.
-f::
--force::
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index fff985cf3852..2990570b5c6d 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -61,11 +61,6 @@ static void __handle_on_exit_funcs(void)
}
#endif
-enum write_mode_t {
- WRITE_FORCE,
- WRITE_APPEND
-};
-
struct perf_record {
struct perf_tool tool;
struct perf_record_opts opts;
@@ -77,12 +72,9 @@ struct perf_record {
int output;
unsigned int page_size;
int realtime_prio;
- enum write_mode_t write_mode;
bool no_buildid;
bool no_buildid_cache;
bool force;
- bool file_new;
- bool append_file;
long samples;
off_t post_processing_offset;
};
@@ -200,25 +192,6 @@ static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg)
signal(signr, SIG_DFL);
}
-static bool perf_evlist__equal(struct perf_evlist *evlist,
- struct perf_evlist *other)
-{
- struct perf_evsel *pos, *pair;
-
- if (evlist->nr_entries != other->nr_entries)
- return false;
-
- pair = perf_evlist__first(other);
-
- list_for_each_entry(pos, &evlist->entries, node) {
- if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0))
- return false;
- pair = perf_evsel__next(pair);
- }
-
- return true;
-}
-
static int perf_record__open(struct perf_record *rec)
{
char msg[512];
@@ -273,16 +246,7 @@ try_again:
goto out;
}
- if (rec->file_new)
- session->evlist = evlist;
- else {
- if (!perf_evlist__equal(session->evlist, evlist)) {
- fprintf(stderr, "incompatible append\n");
- rc = -1;
- goto out;
- }
- }
-
+ session->evlist = evlist;
perf_session__set_id_hdr_size(session);
out:
return rc;
@@ -415,23 +379,15 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
if (!strcmp(output_name, "-"))
opts->pipe_output = true;
else if (!stat(output_name, &st) && st.st_size) {
- if (rec->write_mode == WRITE_FORCE) {
- char oldname[PATH_MAX];
- snprintf(oldname, sizeof(oldname), "%s.old",
- output_name);
- unlink(oldname);
- rename(output_name, oldname);
- }
- } else if (rec->write_mode == WRITE_APPEND) {
- rec->write_mode = WRITE_FORCE;
+ char oldname[PATH_MAX];
+ snprintf(oldname, sizeof(oldname), "%s.old",
+ output_name);
+ unlink(oldname);
+ rename(output_name, oldname);
}
}
- flags = O_CREAT|O_RDWR;
- if (rec->write_mode == WRITE_APPEND)
- rec->file_new = 0;
- else
- flags |= O_TRUNC;
+ flags = O_CREAT|O_RDWR|O_TRUNC;
if (opts->pipe_output)
output = STDOUT_FILENO;
@@ -445,7 +401,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
rec->output = output;
session = perf_session__new(output_name, O_WRONLY,
- rec->write_mode == WRITE_FORCE, false, NULL);
+ true, false, NULL);
if (session == NULL) {
pr_err("Not enough memory for reading perf file header\n");
return -1;
@@ -465,12 +421,6 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
if (!rec->opts.branch_stack)
perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
- if (!rec->file_new) {
- err = perf_session__read_header(session, output);
- if (err < 0)
- goto out_delete_session;
- }
-
if (forks) {
err = perf_evlist__prepare_workload(evsel_list, &opts->target,
argv, opts->pipe_output,
@@ -498,7 +448,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
err = perf_header__write_pipe(output);
if (err < 0)
goto out_delete_session;
- } else if (rec->file_new) {
+ } else {
err = perf_session__write_header(session, evsel_list,
output, false);
if (err < 0)
@@ -869,8 +819,6 @@ static struct perf_record record = {
.uses_mmap = true,
},
},
- .write_mode = WRITE_FORCE,
- .file_new = true,
};
#define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: "
@@ -906,8 +854,6 @@ const struct option record_options[] = {
"collect raw sample records from all opened counters"),
OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide,
"system-wide collection from all CPUs"),
- OPT_BOOLEAN('A', "append", &record.append_file,
- "append to the output file to do incremental profiling"),
OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu",
"list of cpus to monitor"),
OPT_BOOLEAN('f', "force", &record.force,
@@ -977,16 +923,6 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
if (!argc && perf_target__none(&rec->opts.target))
usage_with_options(record_usage, record_options);
- if (rec->force && rec->append_file) {
- ui__error("Can't overwrite and append at the same time."
- " You need to choose between -f and -A");
- usage_with_options(record_usage, record_options);
- } else if (rec->append_file) {
- rec->write_mode = WRITE_APPEND;
- } else {
- rec->write_mode = WRITE_FORCE;
- }
-
if (nr_cgroups && !rec->opts.target.system_wide) {
ui__error("cgroup monitoring only available in"
" system-wide mode\n");
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 738d3b8d9745..93dd31573fb5 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2303,29 +2303,18 @@ int perf_session__write_header(struct perf_session *session,
struct perf_file_header f_header;
struct perf_file_attr f_attr;
struct perf_header *header = &session->header;
- struct perf_evsel *evsel, *pair = NULL;
+ struct perf_evsel *evsel;
int err;
lseek(fd, sizeof(f_header), SEEK_SET);
- if (session->evlist != evlist)
- pair = perf_evlist__first(session->evlist);
-
list_for_each_entry(evsel, &evlist->entries, node) {
evsel->id_offset = lseek(fd, 0, SEEK_CUR);
err = do_write(fd, evsel->id, evsel->ids * sizeof(u64));
if (err < 0) {
-out_err_write:
pr_debug("failed to write perf header\n");
return err;
}
- if (session->evlist != evlist) {
- err = do_write(fd, pair->id, pair->ids * sizeof(u64));
- if (err < 0)
- goto out_err_write;
- evsel->ids += pair->ids;
- pair = perf_evsel__next(pair);
- }
}
header->attr_offset = lseek(fd, 0, SEEK_CUR);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 06:04:20 +0000