Messages in this thread | | | Date | Mon, 15 May 2023 18:30:17 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf: ftrace: flush output after each writing |
| |
Em Sat, May 13, 2023 at 03:40:00PM +0800, Changbin Du escreveu: > The pager will result stdout in full buffering mode instead of line > buffering. We need to make the trace visible timely.
Thanks, applied.
- Arnaldo
> Signed-off-by: Changbin Du <changbin.du@huawei.com> > --- > tools/perf/builtin-ftrace.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c > index 810e3376c7d6..ad2a9ae041f6 100644 > --- a/tools/perf/builtin-ftrace.c > +++ b/tools/perf/builtin-ftrace.c > @@ -650,6 +650,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace) > break; > if (fwrite(buf, n, 1, stdout) != 1) > break; > + /* flush output since stdout is in full buffering mode due to pager */ > + fflush(stdout); > } > } > > -- > 2.25.1 >
--
- Arnaldo
| |