Commit b94bf594 authored by Myungho Jung's avatar Myungho Jung Committed by Thomas Gleixner

timer/sysclt: Restrict timer migration sysctl values to 0 and 1

timer_migration sysctl acts as a boolean switch, so the allowed values
should be restricted to 0 and 1.

Add the necessary extra fields to the sysctl table entry to enforce that.

[ tglx: Rewrote changelog ]
Signed-off-by: default avatarMyungho Jung <mhjungk@gmail.com>
Link: http://lkml.kernel.org/r/1492640690-3550-1-git-send-email-mhjungk@gmail.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent eb645221
......@@ -1176,6 +1176,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = timer_migration_handler,
.extra1 = &zero,
.extra2 = &one,
},
#endif
#ifdef CONFIG_BPF_SYSCALL
......
......@@ -241,7 +241,7 @@ int timer_migration_handler(struct ctl_table *table, int write,
int ret;
mutex_lock(&mutex);
ret = proc_dointvec(table, write, buffer, lenp, ppos);
ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
if (!ret && write)
timers_update_migration(false);
mutex_unlock(&mutex);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment