From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753761Ab3BCVIb (ORCPT ); Sun, 3 Feb 2013 16:08:31 -0500 Received: from mail-vb0-f41.google.com ([209.85.212.41]:63658 "EHLO mail-vb0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753597Ab3BCVIa (ORCPT ); Sun, 3 Feb 2013 16:08:30 -0500 From: Frederic Weisbecker To: Ingo Molnar Cc: LKML , anish kumar , Frederic Weisbecker Subject: [PATCH] irq_work: irq_work_queue function return value not used. Date: Sun, 3 Feb 2013 22:08:23 +0100 Message-Id: <1359925703-24304-1-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 1.7.5.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: anish kumar As no one is using the return value of irq_work_queue function it is better to just make it void. Acked-by: Steven Rostedt Signed-off-by: anish kumar [fix stale comments, remove now unnecessary __irq_work_queue intermediate function] Signed-off-by: Frederic Weisbecker --- include/linux/irq_work.h | 2 +- kernel/irq_work.c | 31 ++++++++++--------------------- 2 files changed, 11 insertions(+), 22 deletions(-) diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 6a9e8f5..ce60c08 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -16,7 +16,7 @@ void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *)) work->func = func; } -bool irq_work_queue(struct irq_work *work); +void irq_work_queue(struct irq_work *work); void irq_work_run(void); void irq_work_sync(struct irq_work *work); diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 64eddd5..c9d7478 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -63,12 +63,20 @@ void __weak arch_irq_work_raise(void) } /* - * Queue the entry and raise the IPI if needed. + * Enqueue the irq_work @entry unless it's already pending + * somewhere. + * + * Can be re-enqueued while the callback is still in progress. */ -static void __irq_work_queue(struct irq_work *work) +void irq_work_queue(struct irq_work *work) { bool empty; + /* Only queue if not already pending */ + if (!irq_work_claim(work)) + return; + + /* Queue the entry and raise the IPI if needed. */ preempt_disable(); empty = llist_add(&work->llnode, &__get_cpu_var(irq_work_list)); @@ -78,25 +86,6 @@ static void __irq_work_queue(struct irq_work *work) preempt_enable(); } - -/* - * Enqueue the irq_work @entry, returns true on success, failure when the - * @entry was already enqueued by someone else. - * - * Can be re-enqueued while the callback is still in progress. - */ -bool irq_work_queue(struct irq_work *work) -{ - if (!irq_work_claim(work)) { - /* - * Already enqueued, can't do! - */ - return false; - } - - __irq_work_queue(work); - return true; -} EXPORT_SYMBOL_GPL(irq_work_queue); /* -- 1.7.5.4