Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753281AbZKTMfA (ORCPT ); Fri, 20 Nov 2009 07:35:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753208AbZKTMe7 (ORCPT ); Fri, 20 Nov 2009 07:34:59 -0500 Received: from mail-px0-f180.google.com ([209.85.216.180]:61320 "EHLO mail-px0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753198AbZKTMe5 (ORCPT ); Fri, 20 Nov 2009 07:34:57 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=FGlxraMlHQjG/dmw1Wq83X88V30QfUqXVkV4GP6NNVXKLya5D3cJiQdG9ruY81mxXM gnmZECJUrQm/1Xk0UBW3efv6jvlxOzsmuk8lUT/nQQgZAQQyQJ7hCY3lno0hRCbSFvWs HMURAXr9JR0ryZkl7YRFLzt+pi+M8dobcIDoM= From: Wu Zhangjin To: Ralf Baechle , rostedt@goodmis.org Cc: Nicholas Mc Guire , zhangfx@lemote.com, Wu Zhangjin , Ingo Molnar , Thomas Gleixner , Frederic Weisbecker , linux-kernel@vger.kernel.org, linux-mips@linux-mips.org Subject: [PATCH v9 02/10] tracing: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST for MIPS Date: Fri, 20 Nov 2009 20:34:30 +0800 Message-Id: <51e30436a435480f1f0dec146a82f2b250900690.1258719323.git.wuzhangjin@gmail.com> X-Mailer: git-send-email 1.6.2.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1557 Lines: 50 From: Wu Zhangjin There is an exisiting common ftrace_test_stop_func() in kernel/trace/ftrace.c, which is used to check the global variable ftrace_trace_stop to determine whether stop the function tracing. This patch implepment the MIPS specific one to speedup the procedure. Thanks goes to Zhang Le for Cleaning it up. Signed-off-by: Wu Zhangjin --- arch/mips/Kconfig | 1 + arch/mips/kernel/mcount.S | 3 +++ 2 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 6b33e88..a9bd992 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -5,6 +5,7 @@ config MIPS select HAVE_OPROFILE select HAVE_ARCH_KGDB select HAVE_FUNCTION_TRACER + select HAVE_FUNCTION_TRACE_MCOUNT_TEST # Horrible source of confusion. Die, die, die ... select EMBEDDED select RTC_LIB if !LEMOTE_FULOONG2E diff --git a/arch/mips/kernel/mcount.S b/arch/mips/kernel/mcount.S index cebcc3c..cbb45ed 100644 --- a/arch/mips/kernel/mcount.S +++ b/arch/mips/kernel/mcount.S @@ -59,6 +59,9 @@ .endm NESTED(_mcount, PT_SIZE, ra) + lw t0, function_trace_stop + bnez t0, ftrace_stub + nop PTR_LA t0, ftrace_stub PTR_L t1, ftrace_trace_function /* Prepare t1 for (1) */ bne t0, t1, static_trace -- 1.6.2.1 -- 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/