From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FCBDC676D2 for ; Mon, 8 Oct 2018 12:53:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D60B72084D for ; Mon, 8 Oct 2018 12:53:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D60B72084D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726600AbeJHUFE (ORCPT ); Mon, 8 Oct 2018 16:05:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35720 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725893AbeJHUFE (ORCPT ); Mon, 8 Oct 2018 16:05:04 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A89EF308424D; Mon, 8 Oct 2018 12:53:29 +0000 (UTC) Received: from f28server.default (ovpn-116-135.phx2.redhat.com [10.3.116.135]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4677A6530E; Mon, 8 Oct 2018 12:53:24 +0000 (UTC) From: Daniel Bristot de Oliveira To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Greg Kroah-Hartman , Pavel Tatashin , Masami Hiramatsu , "Steven Rostedt (VMware)" , Zhou Chengming , Jiri Kosina , Josh Poimboeuf , "Peter Zijlstra (Intel)" , Chris von Recklinghausen , Jason Baron , Scott Wood , Marcelo Tosatti , Clark Williams Subject: [RFC PATCH 1/6] jump_label: Add for_each_label_entry helper Date: Mon, 8 Oct 2018 14:53:00 +0200 Message-Id: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Mon, 08 Oct 2018 12:53:29 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the helper: for_each_label_entry(key, entry, stop) For the "for each jump label entry" for defined as: for (; (entry < stop) && (jump_entry_key(entry) == key); entry++) Simplifying the reading and usage. Signed-off-by: Daniel Bristot de Oliveira Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Greg Kroah-Hartman Cc: Pavel Tatashin Cc: Masami Hiramatsu Cc: "Steven Rostedt (VMware)" Cc: Zhou Chengming Cc: Jiri Kosina Cc: Josh Poimboeuf Cc: "Peter Zijlstra (Intel)" Cc: Chris von Recklinghausen Cc: Jason Baron Cc: Scott Wood Cc: Marcelo Tosatti Cc: Clark Williams Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org --- include/linux/jump_label.h | 3 +++ kernel/jump_label.c | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 1a0b6f17a5d6..cd3bed880ca0 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -170,6 +170,9 @@ extern void static_key_disable(struct static_key *key); extern void static_key_enable_cpuslocked(struct static_key *key); extern void static_key_disable_cpuslocked(struct static_key *key); +#define for_each_label_entry(key, entry, stop) \ + for (; (entry < stop) && (jump_entry_key(entry) == key); entry++) + /* * We should be using ATOMIC_INIT() for initializing .enabled, but * the inclusion of atomic.h is problematic for inclusion of jump_label.h diff --git a/kernel/jump_label.c b/kernel/jump_label.c index 2e62503bea0d..e853916a3b46 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -365,7 +365,7 @@ static void __jump_label_update(struct static_key *key, struct jump_entry *entry, struct jump_entry *stop) { - for (; (entry < stop) && (jump_entry_key(entry) == key); entry++) { + for_each_label_entry(key, entry, stop) { /* * An entry->code of 0 indicates an entry which has been * disabled because it was in an init text area. -- 2.17.1