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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 467F3C433F5 for ; Fri, 11 Feb 2022 11:54:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349650AbiBKLyO (ORCPT ); Fri, 11 Feb 2022 06:54:14 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:42326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345558AbiBKLyO (ORCPT ); Fri, 11 Feb 2022 06:54:14 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70F62EB0; Fri, 11 Feb 2022 03:54:13 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0317A618CF; Fri, 11 Feb 2022 11:54:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A932C340E9; Fri, 11 Feb 2022 11:54:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644580452; bh=WDr1wYMBqsy40Pudk1eNzGhiianFBoaG1uB42EhH/Yc=; h=From:To:Cc:Subject:Date:From; b=u49P4uxiQ8AM049ZlWIPnkLHjZ67u6iifufSVkM+/VCa2CGf6B2KIGa8bO7R8XMkB 4117f4S7/Gph1wsIv/zM+IZVIcnUsisEtKgbws39L0sauD6MwyDF0ctJ4rsjfTZRVW TbDIxa565YhCP84rZ4IuLAIWSes88H8CD2E0HcnD9xVO6Aene4TXKLrDPNolK0wF3z XfA4bWdqPEF2mM+UFvic6IENeDs4jS9uXWK6GmG27VfFia34d+ozJX6THND1O8qBCX PdOhsbTyDAHABTiJKmO1tw4LJkHuaSyiHFGJzg+/7cENP753NJxHEwKtqZUo/HU+CF 3IW5kocrVanZw== From: Masami Hiramatsu To: Jiri Olsa , Alexei Starovoitov Cc: Daniel Borkmann , Andrii Nakryiko , Masami Hiramatsu , netdev@vger.kernel.org, bpf@vger.kernel.org, lkml , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Steven Rostedt , "Naveen N . Rao" , Anil S Keshavamurthy , "David S . Miller" Subject: [PATCH v8 00/11] fprobe: Introduce fprobe function entry/exit probe Date: Fri, 11 Feb 2022 20:54:06 +0900 Message-Id: <164458044634.586276.3261555265565111183.stgit@devnote2> X-Mailer: git-send-email 2.25.1 User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi, Here is the 8th version of fprobe. This version fixes a build error when CONFIG_FUNCTION_TRACER=n, and add a KUnit based selftest. The previous version is here[1]; [1] https://lore.kernel.org/all/164360522462.65877.1891020292202285106.stgit@devnote2/T/#u This series introduces the fprobe, the function entry/exit probe with multiple probe point support. This also introduces the rethook for hooking function return as same as the kretprobe does. This abstraction will help us to generalize the fgraph tracer, because we can just switch to it from the rethook in fprobe, depending on the kernel configuration. The patch [1/10] is from Jiri's series[2]. [2] https://lore.kernel.org/all/20220104080943.113249-1-jolsa@kernel.org/T/#u And the patch [9/10] adds the FPROBE_FL_KPROBE_SHARED flag for the case if user wants to share the same code (or share a same resource) on the fprobe and the kprobes. I forcibly updated my kprobes/fprobe branch, you can pull this series from: https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/fprobe Thank you, --- Jiri Olsa (1): ftrace: Add ftrace_set_filter_ips function Masami Hiramatsu (10): fprobe: Add ftrace based probe APIs rethook: Add a generic return hook rethook: x86: Add rethook x86 implementation ARM: rethook: Add rethook arm implementation arm64: rethook: Add arm64 rethook implementation fprobe: Add exit_handler support fprobe: Add sample program for fprobe fprobe: Introduce FPROBE_FL_KPROBE_SHARED flag for fprobe docs: fprobe: Add fprobe description to ftrace-use.rst fprobe: Add a selftest for fprobe Documentation/trace/fprobe.rst | 171 +++++++++++++ Documentation/trace/index.rst | 1 arch/arm/Kconfig | 1 arch/arm/include/asm/stacktrace.h | 4 arch/arm/kernel/stacktrace.c | 6 arch/arm/probes/Makefile | 1 arch/arm/probes/rethook.c | 71 +++++ arch/arm64/Kconfig | 1 arch/arm64/include/asm/stacktrace.h | 2 arch/arm64/kernel/probes/Makefile | 1 arch/arm64/kernel/probes/rethook.c | 25 ++ arch/arm64/kernel/probes/rethook_trampoline.S | 87 ++++++ arch/arm64/kernel/stacktrace.c | 7 - arch/x86/Kconfig | 1 arch/x86/include/asm/unwind.h | 8 + arch/x86/kernel/Makefile | 1 arch/x86/kernel/kprobes/common.h | 1 arch/x86/kernel/rethook.c | 115 ++++++++ include/linux/fprobe.h | 105 ++++++++ include/linux/ftrace.h | 3 include/linux/kprobes.h | 3 include/linux/rethook.h | 100 +++++++ include/linux/sched.h | 3 kernel/exit.c | 2 kernel/fork.c | 3 kernel/trace/Kconfig | 26 ++ kernel/trace/Makefile | 2 kernel/trace/fprobe.c | 341 +++++++++++++++++++++++++ kernel/trace/ftrace.c | 58 ++++ kernel/trace/rethook.c | 313 +++++++++++++++++++++++ lib/Kconfig.debug | 12 + lib/Makefile | 2 lib/test_fprobe.c | 125 +++++++++ samples/Kconfig | 7 + samples/Makefile | 1 samples/fprobe/Makefile | 3 samples/fprobe/fprobe_example.c | 120 +++++++++ 37 files changed, 1719 insertions(+), 14 deletions(-) create mode 100644 Documentation/trace/fprobe.rst create mode 100644 arch/arm/probes/rethook.c create mode 100644 arch/arm64/kernel/probes/rethook.c create mode 100644 arch/arm64/kernel/probes/rethook_trampoline.S create mode 100644 arch/x86/kernel/rethook.c create mode 100644 include/linux/fprobe.h create mode 100644 include/linux/rethook.h create mode 100644 kernel/trace/fprobe.c create mode 100644 kernel/trace/rethook.c create mode 100644 lib/test_fprobe.c create mode 100644 samples/fprobe/Makefile create mode 100644 samples/fprobe/fprobe_example.c -- Masami Hiramatsu (Linaro)