diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2025-07-15 18:34:10 +0300 |
|---|---|---|
| committer | Chen-Yu Tsai <wens@csie.org> | 2025-07-15 18:34:10 +0300 |
| commit | ca5ad734d30f30a577f705926d6e16a87513a2a7 (patch) | |
| tree | b5fb169a86ac59892bd3b60c2df13e8a7cef360d /io_uring/fdinfo.c | |
| parent | 082c6a2d06c0831d236760a29953355845eee988 (diff) | |
| parent | f99d4fccd2185176baf4ecac9a49d280fc62b953 (diff) | |
| download | linux-ca5ad734d30f30a577f705926d6e16a87513a2a7.tar.xz | |
Merge branch 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm into sunxi/dt-for-6.17
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Diffstat (limited to 'io_uring/fdinfo.c')
| -rw-r--r-- | io_uring/fdinfo.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/io_uring/fdinfo.c b/io_uring/fdinfo.c index e9355276ab5d..9798d6fb4ec7 100644 --- a/io_uring/fdinfo.c +++ b/io_uring/fdinfo.c @@ -141,18 +141,26 @@ static void __io_uring_show_fdinfo(struct io_ring_ctx *ctx, struct seq_file *m) if (ctx->flags & IORING_SETUP_SQPOLL) { struct io_sq_data *sq = ctx->sq_data; + struct task_struct *tsk; + rcu_read_lock(); + tsk = rcu_dereference(sq->thread); /* * sq->thread might be NULL if we raced with the sqpoll * thread termination. */ - if (sq->thread) { + if (tsk) { + get_task_struct(tsk); + rcu_read_unlock(); + getrusage(tsk, RUSAGE_SELF, &sq_usage); + put_task_struct(tsk); sq_pid = sq->task_pid; sq_cpu = sq->sq_cpu; - getrusage(sq->thread, RUSAGE_SELF, &sq_usage); sq_total_time = (sq_usage.ru_stime.tv_sec * 1000000 + sq_usage.ru_stime.tv_usec); sq_work_time = sq->work_time; + } else { + rcu_read_unlock(); } } |