diff options
| -rw-r--r-- | arch/tile/kernel/hardwall.c | 10 | ||||
| -rw-r--r-- | arch/tile/kernel/process.c | 23 |
2 files changed, 18 insertions, 15 deletions
diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c index 38ac189d9575..7db8893d4fc5 100644 --- a/arch/tile/kernel/hardwall.c +++ b/arch/tile/kernel/hardwall.c @@ -540,6 +540,14 @@ static struct hardwall_info *hardwall_create(struct hardwall_type *hwt, } } + /* + * Eliminate cpus that are not part of this Linux client. + * Note that this allows for configurations that we might not want to + * support, such as one client on every even cpu, another client on + * every odd cpu. + */ + cpumask_and(&info->cpumask, &info->cpumask, cpu_online_mask); + /* Confirm it doesn't overlap and add it to the list. */ spin_lock_irqsave(&hwt->lock, flags); list_for_each_entry(iter, &hwt->list, list) { @@ -612,7 +620,7 @@ static int hardwall_activate(struct hardwall_info *info) /* * Deactivate a task's hardwall. Must hold lock for hardwall_type. - * This method may be called from free_task(), so we don't want to + * This method may be called from exit_thread(), so we don't want to * rely on too many fields of struct task_struct still being valid. * We assume the cpus_allowed, pid, and comm fields are still valid. */ diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c index 8ac304484f98..8d6c51d55762 100644 --- a/arch/tile/kernel/process.c +++ b/arch/tile/kernel/process.c @@ -74,19 +74,6 @@ void arch_release_thread_info(struct thread_info *info) { struct single_step_state *step_state = info->step_state; -#ifdef CONFIG_HARDWALL - /* - * We free a thread_info from the context of the task that has - * been scheduled next, so the original task is already dead. - * Calling deactivate here just frees up the data structures. - * If the task we're freeing held the last reference to a - * hardwall fd, it would have been released prior to this point - * anyway via exit_files(), and the hardwall_task.info pointers - * would be NULL by now. - */ - hardwall_deactivate_all(info->task); -#endif - if (step_state) { /* @@ -564,7 +551,15 @@ void flush_thread(void) */ void exit_thread(void) { - /* Nothing */ +#ifdef CONFIG_HARDWALL + /* + * Remove the task from the list of tasks that are associated + * with any live hardwalls. (If the task that is exiting held + * the last reference to a hardwall fd, it would already have + * been released and deactivated at this point.) + */ + hardwall_deactivate_all(current); +#endif } void show_regs(struct pt_regs *regs) |