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| author | Oleg Nesterov <[email protected]> | 2023-09-05 17:46:46 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2023-09-08 08:42:19 -0700 |
| commit | 1a00ef57d9f120b711b6b1193d12ba3789d47ec2 (patch) | |
| tree | c36fa91e3f80139c3e82cfd267f6f3ee36940149 /tools/perf/scripts/python/task-analyzer.py | |
| parent | 35897c3c5264469cbd45e44d23c165a08cfb6b3c (diff) | |
bpf: task_group_seq_get_next: cleanup the usage of next_thread()
1. find_pid_ns() + get_pid_task() under rcu_read_lock() guarantees that we
can safely iterate the task->thread_group list. Even if this task exits
right after get_pid_task() (or goto retry) and pid_alive() returns 0.
Kill the unnecessary pid_alive() check.
2. next_thread() simply can't return NULL, kill the bogus "if (!next_task)"
check.
Signed-off-by: Oleg Nesterov <[email protected]>
Acked-by: "Eric W. Biederman" <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions