diff options
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 | ||||
| -rw-r--r-- | kernel/torture.c | 7 |
2 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index ee007b5c874f..868f59a48580 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4873,6 +4873,10 @@ topology updates sent by the hypervisor to this LPAR. + torture.disable_onoff_at_boot= [KNL] + Prevent the CPU-hotplug component of torturing + until after init has spawned. + tp720= [HW,PS2] tpm_suspend_pcr=[HW,TPM] diff --git a/kernel/torture.c b/kernel/torture.c index e377b5b17de8..8683375dc0c7 100644 --- a/kernel/torture.c +++ b/kernel/torture.c @@ -42,6 +42,9 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Paul E. McKenney <paulmck@linux.ibm.com>"); +static bool disable_onoff_at_boot; +module_param(disable_onoff_at_boot, bool, 0444); + static char *torture_type; static int verbose; @@ -229,6 +232,10 @@ torture_onoff(void *arg) VERBOSE_TOROUT_STRING("torture_onoff end holdoff"); } while (!torture_must_stop()) { + if (disable_onoff_at_boot && !rcu_inkernel_boot_has_ended()) { + schedule_timeout_interruptible(HZ / 10); + continue; + } cpu = (torture_random(&rand) >> 4) % (maxcpu + 1); if (!torture_offline(cpu, &n_offline_attempts, &n_offline_successes, |