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 E02EE220F24; Tue, 8 Jul 2025 01:23:59 +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=1751937840; cv=none; b=SBhcbbCJNL6i6HSD6KHXYRhiZLcdV5V80sGv1PLw0PmE7Ebrj6K4JPNOIGsodIXaHWZ9XzKjVr38tmvkvUKgQOJvbVdFpzUt3igde1AGw4zrhsSkEPLabE2jW71Fo0hvP94fkfTOW6sqpcz3G58cEkB6eyfaDLw/ykMD2wyHFIE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751937840; c=relaxed/simple; bh=q9368biQbKFkdqwUJGMNR4U7z4DEcx2lmBxRY3YPNYQ=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=TRzUJ5syFxmYz7pfb/oYfJLA0nhcKJb+UIfCU8I+u+YjyMvpYfrszDP8uBdCPvtg5QxTus5X+gyOsLJ9DEMLFfqMAS9ffxhsDnX7ZdZ5z3wgDH1K1W5oZJmdjf0yiR8He5z5ZYD+MGMTpv+JLVXjMyYLXr1P2224M5XbBM5jQtE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RrWmDdTd; 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="RrWmDdTd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8D74C4CEF4; Tue, 8 Jul 2025 01:23:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751937839; bh=q9368biQbKFkdqwUJGMNR4U7z4DEcx2lmBxRY3YPNYQ=; h=Date:From:To:Cc:Subject:References:From; b=RrWmDdTdfrCR/QR7S1cFvpBywbUn+9TgIi+j7JfOTMojWG99WrGBMxhw0ZwEtPN8b Z4pTIPhJxGhY9UhwUCsO7GavdwJVt4xbIsyvKJQSSaWQVDlYn6GoXicKIcVkBO2Cbx 5U9pnOwMp6RnRKi7FDUV0mqCjqdXADZ6adLUSxWqYc38d6X0tefQYiV8y3PgXBdm8l QJafTD0Xmh/hSOAjXG/4DuojtsuOeLYiQpvzPrvIjzqb4iEcUb1r0TrJXEpuknQBm+ lSxEussR+H2ZhLbdYDCJM+SB8mqBot7pxjDNGINtvpd5gFK2SJG7jSfXkTyxsFKhuq hplvDN8jDzx9w== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uYx3w-00000000BvS-00qE; Mon, 07 Jul 2025 21:24:00 -0400 Message-ID: <20250708012359.853818537@kernel.org> User-Agent: quilt/0.68 Date: Mon, 07 Jul 2025 21:22:52 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, x86@kernel.org Cc: Masami Hiramatsu , Mathieu Desnoyers , Josh Poimboeuf , Peter Zijlstra , Ingo Molnar , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Andrii Nakryiko , Indu Bhagat , "Jose E. Marchesi" , Beau Belgrave , Jens Remus , Linus Torvalds , Andrew Morton , Jens Axboe , Florian Weimer , Sam James Subject: [PATCH v13 13/14] unwind_user/x86: Enable frame pointer unwinding on x86 References: <20250708012239.268642741@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 From: Josh Poimboeuf Use ARCH_INIT_USER_FP_FRAME to describe how frame pointers are unwound on x86, and enable CONFIG_HAVE_UNWIND_USER_FP accordingly so the unwind_user interfaces can be used. Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt (Google) --- arch/x86/Kconfig | 1 + arch/x86/include/asm/unwind_user.h | 11 +++++++++++ 2 files changed, 12 insertions(+) create mode 100644 arch/x86/include/asm/unwind_user.h diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 71019b3b54ea..5862433c81e1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -302,6 +302,7 @@ config X86 select HAVE_SYSCALL_TRACEPOINTS select HAVE_UACCESS_VALIDATION if HAVE_OBJTOOL select HAVE_UNSTABLE_SCHED_CLOCK + select HAVE_UNWIND_USER_FP if X86_64 select HAVE_USER_RETURN_NOTIFIER select HAVE_GENERIC_VDSO select VDSO_GETRANDOM if X86_64 diff --git a/arch/x86/include/asm/unwind_user.h b/arch/x86/include/asm/unwind_user.h new file mode 100644 index 000000000000..8597857bf896 --- /dev/null +++ b/arch/x86/include/asm/unwind_user.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_UNWIND_USER_H +#define _ASM_X86_UNWIND_USER_H + +#define ARCH_INIT_USER_FP_FRAME \ + .cfa_off = (s32)sizeof(long) * 2, \ + .ra_off = (s32)sizeof(long) * -1, \ + .fp_off = (s32)sizeof(long) * -2, \ + .use_fp = true, + +#endif /* _ASM_X86_UNWIND_USER_H */ -- 2.47.2