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 455FD1E1E10; Wed, 30 Apr 2025 20:01:03 +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=1746043264; cv=none; b=YnnJFjLD72mVQEYgYsGLZ2jBA8mFiJVVe6k/hRIpYHWuU+dgJp0/q0h84lUxQjlGH7U6m3+IecdFTLcDRr02GDoBKQsgGlgTXAYI9AI7M+4h/T2mo+dGhsh4QvKLbL8O8BwbZhd0EG4VZ+tWHA4+j4cnc+ycnKfBAv/sbThKzro= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746043264; c=relaxed/simple; bh=Ivqqrdd6BFIWSz+UZ5uzPlJbABlGLJtKzmx89lxeAbI=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=uThhrR+gF7rTekN2vbPwY7Qw+9V1nYySdHTPT6k0aIGkUzSq4jYBNVQCFfUCl0qsEwqAy7f24prW1+NHPhG1QOkUkpIecpjSYL66IkAYfiDt38UGB4JH3VZ2UoIDXkNF5JS+uGPAiNiNdmfPn5gB/+7KF9o6Vo2hHsaRtaGnbgE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id C604CC4CEF6; Wed, 30 Apr 2025 20:01:03 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uADcC-00000001dOW-0alf; Wed, 30 Apr 2025 16:01:08 -0400 Message-ID: <20250430200107.992453476@goodmis.org> User-Agent: quilt/0.68 Date: Wed, 30 Apr 2025 15:57:49 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Josh Poimboeuf , x86@kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Indu Bhagat , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , linux-perf-users@vger.kernel.org, Mark Brown , linux-toolchains@vger.kernel.org, Jordan Rome , Sam James , Andrii Nakryiko , Jens Remus , Florian Weimer , Andy Lutomirski , Weinan Liu , Blake Jones , Beau Belgrave , "Jose E. Marchesi" , Alexander Aring Subject: [PATCH v7 03/18] unwind_user/x86: Enable frame pointer unwinding on x86 References: <20250430195746.827125963@goodmis.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 aeac63b11fc2..b5a85d2be5ee 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -301,6 +301,7 @@ 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