From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yk0-x22b.google.com (mail-yk0-x22b.google.com [IPv6:2607:f8b0:4002:c07::22b]) (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 9DE261A1D92 for ; Mon, 24 Aug 2015 21:20:49 +1000 (AEST) Received: by ykfw73 with SMTP id w73so130872144ykf.3 for ; Mon, 24 Aug 2015 04:20:47 -0700 (PDT) From: Kevin Hao To: Michael Ellerman Cc: Benjamin Herrenschmidt , Peter Zijlstra , Ingo Molnar , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/6] jump_label: make it possible for the archs to invoke jump_label_init() much earlier Date: Mon, 24 Aug 2015 19:20:23 +0800 Message-Id: <1440415228-8006-2-git-send-email-haokexin@gmail.com> In-Reply-To: <1440415228-8006-1-git-send-email-haokexin@gmail.com> References: <1440415228-8006-1-git-send-email-haokexin@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 --- v2: No change. kernel/jump_label.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/jump_label.c b/kernel/jump_label.c index f7dd15d537f9..cfc7d7b65432 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_lock(); jump_label_sort_entries(iter_start, iter_stop); -- 2.1.0