From: Steven Rostedt Because the filters are processed first and then activated (added to the call), we no longer need to worry about the preds of the filter in __alloc_preds() being used. As the filter that is allocating preds is not activated yet. Signed-off-by: Steven Rostedt --- kernel/trace/trace_events_filter.c | 30 +++++++----------------------- 1 files changed, 7 insertions(+), 23 deletions(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index f5d335d..3249b4f 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -795,33 +795,17 @@ static int __alloc_preds(struct event_filter *filter, int n_preds) struct filter_pred *pred; int i; - if (filter->preds) { - if (filter->a_preds < n_preds) { - /* - * We need to reallocate. - * We should have already have zeroed out - * the pred count and called synchronized_sched() - * to make sure no one is using the preds. - */ - if (WARN_ON_ONCE(filter->n_preds)) { - /* We need to reset it now */ - filter->n_preds = 0; - synchronize_sched(); - } - __free_preds(filter); - } - } + if (filter->preds) + __free_preds(filter); + + filter->preds = + kzalloc(sizeof(*filter->preds) * n_preds, GFP_KERNEL); - if (!filter->preds) { - filter->preds = - kzalloc(sizeof(*filter->preds) * n_preds, GFP_KERNEL); - filter->a_preds = n_preds; - } if (!filter->preds) return -ENOMEM; - if (WARN_ON(filter->a_preds < n_preds)) - return -EINVAL; + filter->a_preds = n_preds; + filter->n_preds = 0; for (i = 0; i < n_preds; i++) { pred = &filter->preds[i]; -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/