github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 12:44:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt()

Browse Source 
The rcu_torture_preempt() function uses cpumask_next(), and if that
returns an out-of-bounds result, re-invokes cpumask_next() on -1.
Which is exactly what cpumask_next_wrap() does.  This commit therefore
saves a couple of lines by instead using cpumask_next_wrap().

This was reported by metacode when asked to look for opportunities
to use cpumask_next_wrap() in kernel/rcu.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2026-06-04 20:42:58 -07:00
parent 5ac693414b
commit f424566105
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/rcu/rcutorture.c
View File

@ -4183,9 +4183,7 @@ static int rcu_torture_preempt(void *unused)
// Wait for preempt_interval ms with up to 100us fuzz.
torture_hrtimeout_ms(preempt_interval, 100, &rand);
// Select online CPU.
cpu = cpumask_next(cpu, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_next(-1, cpu_online_mask);
cpu = cpumask_next_wrap(cpu, cpu_online_mask);
WARN_ON_ONCE(cpu >= nr_cpu_ids);
// Move to that CPU, if can't do so, retry later.
if (torture_sched_setaffinity(current->pid, cpumask_of(cpu), false))