From patchwork Thu Aug 20 12:14:30 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hao X-Patchwork-Id: 509030 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3B4FA140291 for ; Thu, 20 Aug 2015 22:19:48 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=b7061UMF; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 140EF1A1F37 for ; Thu, 20 Aug 2015 22:19:48 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=b7061UMF; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mail-yk0-x22a.google.com (mail-yk0-x22a.google.com [IPv6:2607:f8b0:4002:c07::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 7F3DB1A0175 for ; Thu, 20 Aug 2015 22:15:01 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=b7061UMF; dkim-atps=neutral Received: by ykdt205 with SMTP id t205so35180964ykd.1 for ; Thu, 20 Aug 2015 05:14:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=yjh6Y7aavQunxOo76XFa2agEt688BTedV9VPRICVdkU=; b=b7061UMFY8EhB7gAYxPShHOI/yBSIQ6KGLn+uzvC+YlFDLI4+IVthcla8K4A0UGXnD rHHotu472T0TME5iIge/6LLqlNQBTywaYg6y3YQK4EhAL+nU33l98vwZJKgyn1rcXjxI tjvSojytSZymiykRHmmxfIflAifgtuiHZLwQPPzN6ulJWwDbUYoZ3zHZwiFNLvCBCgGJ 0tC6FacxYGecZpnCsigje/yaNzt0+XjBI00VVFILLREgjpirVa2GlI2UUa9fsIeRFTNK V0QGpv2VoSQ1pI2k6o4L697vUdZK1E+UA0yLbqpy5AoCYBzwlCjr4em9S4Z8tdaZRYit CPdA== X-Received: by 10.170.74.130 with SMTP id q124mr2752253ykq.120.1440072899535; Thu, 20 Aug 2015 05:14:59 -0700 (PDT) Received: from pek-khao-d1.corp.ad.wrs.com (unknown-178-22.windriver.com. [147.11.178.22]) by smtp.gmail.com with ESMTPSA id w62sm3745368ywe.50.2015.08.20.05.14.55 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Aug 2015 05:14:58 -0700 (PDT) From: Kevin Hao To: Michael Ellerman Subject: [PATCH 2/8] jump_label: make it possible for the archs to invoke jump_label_init() much earlier Date: Thu, 20 Aug 2015 20:14:30 +0800 Message-Id: <1440072876-8321-3-git-send-email-haokexin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1440072876-8321-1-git-send-email-haokexin@gmail.com> References: <1440072876-8321-1-git-send-email-haokexin@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ingo Molnar MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" For some archs (such as powerpc) would want to invoke jump_label_init() in a much earlier stage. So check static_key_initialized in order to make sure this function run only once. Signed-off-by: Kevin Hao --- kernel/jump_label.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/jump_label.c b/kernel/jump_label.c index df1a7fbe7cd5..fcae370f8794 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -205,6 +205,9 @@ void __init jump_label_init(void) struct static_key *key = NULL; struct jump_entry *iter; + if (static_key_initialized) + return; + jump_label_sort_entries(iter_start, iter_stop); for (iter = iter_start; iter < iter_stop; iter++) {