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=-5.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 6AD7CC04EB9 for ; Mon, 3 Dec 2018 11:02:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3B8D1214C1 for ; Mon, 3 Dec 2018 11:02:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="HjcoaT4+"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="1nf9zR7U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3B8D1214C1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:From:To: Subject:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=ENcTkjWZxTPH0PhvYfzNDFhjzry/7bzG7bFQrNsRrIs=; b=HjcoaT4+GyIRNu F4GoRnhDf2inIao64TnTcjJFDxF6cf1hGFXJfmO6gWSyoa52v3I+yXB88LlTPIMBFowoAQekHqHKS TIlQ60m6eIGeIZgFfccHQr7/E8wnevtWsiuHxuDac5wqtL4q6vYAOW/JjzfFeXhVwNOLPCEre0WHL 9ERsza2o3iuRbQhpMe5XqfC7fTmRQLlVLG7CelZIeYOLaJLAYwpK8TGQ2jFGXZEA6dHCG1pGE1skR ZhAYVtv5fc2MtxburffphvNH55YEGblZn8PWjWmB1CBS6k2siI7bewIVMsVoIiUWAKDrS/U4cr/Sl VIegpLhlXFIxS9Aywu7A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gTm00-000762-DC; Mon, 03 Dec 2018 11:02:48 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gTlzv-00075M-DX for linux-arm-kernel@lists.infradead.org; Mon, 03 Dec 2018 11:02:46 +0000 Received: from localhost (unknown [62.119.166.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 55B532147C; Mon, 3 Dec 2018 11:02:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1543834953; bh=QAfAM0s0McS0KYIfdEbR93eah03/PLBFokfXnTuRodA=; h=Subject:To:Cc:From:Date:From; b=1nf9zR7UkcxdhPjCR3tPet74LI8Bqje68NBt8s1L6IqVHOz/OGCsesXdCZaWSH3Cr 60pa8OUVtsW73KkxniNrcCOYY5YIDffzxf6yUWkZiTt9iAu6xJM3wnOX8N3upOfct/ ZAcez/a2UUW9nNPwcLZS2a1x53DjnEyRaQ9x//CU= Subject: Patch "ARM: function_graph: Simplify with function_graph_enter()" has been added to the 4.19-stable tree To: gregkh@linuxfoundation.org, linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, mhiramat@kernel.org, rostedt@goodmis.org, stable@kernel.org From: Date: Mon, 03 Dec 2018 12:00:11 +0100 Message-ID: <154383481176225@kroah.com> MIME-Version: 1.0 X-stable: commit X-Patchwork-Hint: ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181203_030243_489327_A615A867 X-CRM114-Status: GOOD ( 12.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stable-commits@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org This is a note to let you know that I've just added the patch titled ARM: function_graph: Simplify with function_graph_enter() to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-function_graph-simplify-with-function_graph_enter.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From f1f5b14afd7cce39e6a9b25c685e1ea34c231096 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (VMware)" Date: Sun, 18 Nov 2018 17:19:26 -0500 Subject: ARM: function_graph: Simplify with function_graph_enter() From: Steven Rostedt (VMware) commit f1f5b14afd7cce39e6a9b25c685e1ea34c231096 upstream. The function_graph_enter() function does the work of calling the function graph hook function and the management of the shadow stack, simplifying the work done in the architecture dependent prepare_ftrace_return(). Have ARM use the new code, and remove the shadow stack management as well as having to set up the trace structure. This is needed to prepare for a fix of a design bug on how the curr_ret_stack is used. Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Cc: stable@kernel.org Fixes: 03274a3ffb449 ("tracing/fgraph: Adjust fgraph depth before calling trace return callback") Reviewed-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Greg Kroah-Hartman --- arch/arm/kernel/ftrace.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) --- a/arch/arm/kernel/ftrace.c +++ b/arch/arm/kernel/ftrace.c @@ -227,9 +227,7 @@ void prepare_ftrace_return(unsigned long unsigned long frame_pointer) { unsigned long return_hooker = (unsigned long) &return_to_handler; - struct ftrace_graph_ent trace; unsigned long old; - int err; if (unlikely(atomic_read(¤t->tracing_graph_pause))) return; @@ -237,21 +235,8 @@ void prepare_ftrace_return(unsigned long old = *parent; *parent = return_hooker; - trace.func = self_addr; - trace.depth = current->curr_ret_stack + 1; - - /* Only trace if the calling function expects to */ - if (!ftrace_graph_entry(&trace)) { + if (function_graph_enter(old, self_addr, frame_pointer, NULL)) *parent = old; - return; - } - - err = ftrace_push_return_trace(old, self_addr, &trace.depth, - frame_pointer, NULL); - if (err == -EBUSY) { - *parent = old; - return; - } } #ifdef CONFIG_DYNAMIC_FTRACE Patches currently in stable-queue which might be from rostedt@goodmis.org are queue-4.19/function_graph-create-function_graph_enter-to-consolidate-architecture-code.patch queue-4.19/sh-function_graph-simplify-with-function_graph_enter.patch queue-4.19/function_graph-move-return-callback-before-update-of-curr_ret_stack.patch queue-4.19/nds32-function_graph-simplify-with-function_graph_enter.patch queue-4.19/function_graph-use-new-curr_ret_depth-to-manage-depth-instead-of-curr_ret_stack.patch queue-4.19/sparc-function_graph-simplify-with-function_graph_enter.patch queue-4.19/parisc-function_graph-simplify-with-function_graph_enter.patch queue-4.19/x86-function_graph-simplify-with-function_graph_enter.patch queue-4.19/powerpc-function_graph-simplify-with-function_graph_enter.patch queue-4.19/function_graph-reverse-the-order-of-pushing-the-ret_stack-and-the-callback.patch queue-4.19/arm-function_graph-simplify-with-function_graph_enter.patch queue-4.19/mips-function_graph-simplify-with-function_graph_enter.patch queue-4.19/function_graph-make-ftrace_push_return_trace-static.patch queue-4.19/arm64-function_graph-simplify-with-function_graph_enter.patch queue-4.19/riscv-function_graph-simplify-with-function_graph_enter.patch queue-4.19/s390-function_graph-simplify-with-function_graph_enter.patch queue-4.19/microblaze-function_graph-simplify-with-function_graph_enter.patch queue-4.19/function_graph-have-profiler-use-curr_ret_stack-and-not-depth.patch _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel