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perf ftrace: Reuse target::initial_delay

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Replace perf_ftrace::initial_delay with target::initial_delay.
Specifying a negative initial_delay is meaningless for ftrace in
practice but allowed here.

Signed-off-by: Changbin Du <changbin.du@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hui Wang <hw.huiwang@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230302031146.2801588-4-changbin.du@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Changbin Du 2023-03-02 11:11:46 +08:00 committed by Arnaldo Carvalho de Melo
parent cb4b9e6813
commit f9f60efbfc
2 changed files with 5 additions and 6 deletions
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10
tools/perf/builtin-ftrace.c
View File

@ -623,7 +623,7 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace)
/* display column headers */
read_tracing_file_to_stdout("trace");
if (!ftrace->initial_delay) {
if (!ftrace->target.initial_delay) {
if (write_tracing_file("tracing_on", "1") < 0) {
pr_err("can't enable tracing\n");
goto out_close_fd;
@ -632,8 +632,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace)
evlist__start_workload(ftrace->evlist);
if (ftrace->initial_delay) {
usleep(ftrace->initial_delay * 1000);
if (ftrace->target.initial_delay > 0) {
usleep(ftrace->target.initial_delay * 1000);
if (write_tracing_file("tracing_on", "1") < 0) {
pr_err("can't enable tracing\n");
goto out_close_fd;
@ -1164,8 +1164,8 @@ int cmd_ftrace(int argc, const char **argv)
"Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size),
OPT_BOOLEAN(0, "inherit", &ftrace.inherit,
"Trace children processes"),
OPT_UINTEGER('D', "delay", &ftrace.initial_delay,
"Number of milliseconds to wait before starting tracing after program start"),
OPT_INTEGER('D', "delay", &ftrace.target.initial_delay,
"Number of milliseconds to wait before starting tracing after program start"),
OPT_PARENT(common_options),
};
const struct option latency_options[] = {

1
tools/perf/util/ftrace.h
View File

@ -25,7 +25,6 @@ struct perf_ftrace {
int graph_noirqs;
int graph_verbose;
int graph_thresh;
unsigned int initial_delay;
};
struct filter_entry {