From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 165F519EEB0; Tue, 16 Jul 2024 14:26:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721140012; cv=none; b=kFBwC98xYE4zm6CK82zOycZ8JgGqjp4aVnG/4TBFW4EPP61ytQjg2mMqTLgWYLGy+57MNl+dX7ZTZIZqip6bP5gIRYoPPfJjKHUpUN5jJWHBGYmy8g1Ii5PQNbZWfdeVMo+/GBcMoBbm5RP29acusWko//ZzXjGcAScqZdBwPrM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721140012; c=relaxed/simple; bh=GvxcA8wr20XF4fdAl9dv1Gnq+YAu/czSgSdTv7mKfqU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ILpNr69YQcga2LRzSkVMiERyu9pNziu7W7pQb0YYU88iNO5wIl83+lX2dDeMeG6myCY3wj6/5X1WIaMkEGAjyAIBJprvcAJHKYVwQ+g+WkMmu7+Ajtc9EMLLnziqJ7Y/rxrqH4oIcv/5GGjJbSWkmI9rrz7Td2I5Bs/GKNi4Jpk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g0fOx72v; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="g0fOx72v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4BA5C116B1; Tue, 16 Jul 2024 14:26:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721140011; bh=GvxcA8wr20XF4fdAl9dv1Gnq+YAu/czSgSdTv7mKfqU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g0fOx72vFZ8ep20tFlAdPuHW/ceqJpO3KI/4L6UPERt4tUvCsFH6o1HlchTCRvQZ2 YigmvrCL+V3yMLEzyAiEeNcq5jPc0dnE0kLDJH8U7//pNSphXwlo/W4KBMWzVD5fTW kh3ZhG6cczWqs00Cz+8h6scage9uu+sdMGPY/DdzPwI8DrrwHJTWNi/wEJpDIagMoj tQW7mQ6vENEapgX94ajR20iOq+TWEaNwjaoG9md7aW3S9wiXihM1MnIZUROJ7w0a5g FqcxYFEFB42URz+scF1z6eL2aLLMrRSfx+vSZwJmHYzrFDv7aYe7wAjK54mxxY6S/Q JocpLgejHmKZw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Puranjay Mohan , Steven Rostedt , Palmer Dabbelt , Sasha Levin , paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alexghiti@rivosinc.com, dev.mbstr@gmail.com, andy.chiu@sifive.com, linux-riscv@lists.infradead.org Subject: [PATCH AUTOSEL 6.9 22/22] riscv: stacktrace: fix usage of ftrace_graph_ret_addr() Date: Tue, 16 Jul 2024 10:24:29 -0400 Message-ID: <20240716142519.2712487-22-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240716142519.2712487-1-sashal@kernel.org> References: <20240716142519.2712487-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.9.9 Content-Transfer-Encoding: 8bit From: Puranjay Mohan [ Upstream commit 393da6cbb2ff89aadc47683a85269f913aa1c139 ] ftrace_graph_ret_addr() takes an `idx` integer pointer that is used to optimize the stack unwinding. Pass it a valid pointer to utilize the optimizations that might be available in the future. The commit is making riscv's usage of ftrace_graph_ret_addr() match x86_64. Signed-off-by: Puranjay Mohan Reviewed-by: Steven Rostedt (Google) Link: https://lore.kernel.org/r/20240618145820.62112-1-puranjay@kernel.org Signed-off-by: Palmer Dabbelt Signed-off-by: Sasha Levin --- arch/riscv/kernel/stacktrace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index 0d3f00eb0baee..10e311b2759d3 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -32,6 +32,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *arg) { unsigned long fp, sp, pc; + int graph_idx = 0; int level = 0; if (regs) { @@ -68,7 +69,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, pc = regs->ra; } else { fp = frame->fp; - pc = ftrace_graph_ret_addr(current, NULL, frame->ra, + pc = ftrace_graph_ret_addr(current, &graph_idx, frame->ra, &frame->ra); if (pc == (unsigned long)ret_from_exception) { if (unlikely(!__kernel_text_address(pc) || !fn(arg, pc))) -- 2.43.0