From: Daniel Wagner <[email protected]> commit af3c1c5fdf177870fb5e6e16b24e374696ab28f5 in linux-rt-devel.
The current->migrate_disable counter is not always defined leading to build failures with DEBUG_PREEMPT && !PREEMPT_RT_BASE. Restrict the access to ->migrate_disable to same set where ->migrate_disable is modified. Signed-off-by: Daniel Wagner <[email protected]> [bigeasy: adjust condition + description] Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Paul Gortmaker <[email protected]> diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c index 5f2618d346c4..c2f5b0f8cacd 100644 --- a/lib/smp_processor_id.c +++ b/lib/smp_processor_id.c @@ -23,8 +23,10 @@ unsigned int check_preemption_disabled(const char *what1, const char *what2) * Kernel threads bound to a single CPU can safely use * smp_processor_id(): */ +#if defined(CONFIG_PREEMPT_RT_BASE) && (defined(CONFIG_SMP) || defined(CONFIG_SCHED_DEBUG)) if (current->migrate_disable) goto out; +#endif if (current->nr_cpus_allowed == 1) goto out; -- 2.7.4
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#8686): https://lists.yoctoproject.org/g/linux-yocto/message/8686 Mute This Topic: https://lists.yoctoproject.org/mt/74330120/21656 Group Owner: [email protected] Unsubscribe: https://lists.yoctoproject.org/g/linux-yocto/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
