The patch titled
Subject: getrusage: use __for_each_thread()
has been added to the -mm mm-nonmm-unstable branch. Its filename is
getrusage-use-__for_each_thread.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/getrusage-use-__for_each_thread.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: getrusage: use __for_each_thread()
Date: Sat, 9 Sep 2023 19:26:29 +0200
do/while_each_thread should be avoided when possible.
Plus this change allows to avoid lock_task_sighand(), we can use rcu
and/or sig->stats_lock instead.
Link: https://lkml.kernel.org/r/20230909172629.GA20454@xxxxxxxxxx
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/kernel/sys.c~getrusage-use-__for_each_thread
+++ a/kernel/sys.c
@@ -1830,10 +1830,8 @@ void getrusage(struct task_struct *p, in
r->ru_oublock += sig->oublock;
if (maxrss < sig->maxrss)
maxrss = sig->maxrss;
- t = p;
- do {
+ __for_each_thread(sig, t)
accumulate_thread_rusage(t, r);
- } while_each_thread(p, t);
break;
default:
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
introduce-__next_thread-fix-next_tid-vs-exec-race.patch
change-next_thread-to-use-__next_thread-group_leader.patch
change-thread_group_empty-to-use-task_struct-thread_node.patch
kill-task_struct-thread_group.patch
__kill_pgrp_info-simplify-the-calculation-of-return-value.patch
getrusage-add-the-signal_struct-sig-local-variable.patch
getrusage-use-__for_each_thread.patch
taskstats-fill_stats_for_tgid-use-for_each_thread.patch
