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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 33454C27C5E for ; Mon, 10 Jun 2024 08:40:25 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=FYaNHIWH; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4VyQHC1MxLz3cLj for ; Mon, 10 Jun 2024 18:40:23 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=FYaNHIWH; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=139.178.84.217; helo=dfw.source.kernel.org; envelope-from=naveen@kernel.org; receiver=lists.ozlabs.org) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4VyQGQ5Frkz30TK for ; Mon, 10 Jun 2024 18:39:42 +1000 (AEST) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 42D6160AB8; Mon, 10 Jun 2024 08:39:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 25718C2BBFC; Mon, 10 Jun 2024 08:39:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718008779; bh=ja0F8E5mpqd3wHBq+jUnpLeKU4nNxSQxOz90WvjQzGU=; h=From:To:Cc:Subject:Date:From; b=FYaNHIWHBDmm+usoHfDngTtJzY+U+2d98dvYfq6nlK/SDtGTbBBIqO04XZjY3qqzA bEKJ/6fEh1EIEURqM/n8y+fu1bbuIxo8p7I/FZfrrmXHpmLWRzddZ7t2dCkciFyFF1 7j2Gd/xmd+pXWGknbeGQlESxBthnL/KNHl4rYjGZoeZBXl6NoqzGuQHbQqJlt842EH n7FRm0Kg8Qn03V0KI2FQrHLh94+Fi5N+10xd4yozBWCutAcWhTlMYjXVdbqz5k6V01 x3GIGqsLhb+EgDHGkyRjHDkKnj/RdBMH28enC+mK4PHJMhIrscBc6vDpiBvOkEihHN 0jHEYNMNFJOzA== From: Naveen N Rao To: Subject: [RFC PATCH v2 0/5] powerpc/ftrace: Move ftrace sequence out of line Date: Mon, 10 Jun 2024 14:08:13 +0530 Message-ID: X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Masahiro Yamada , Steven Rostedt , Nicholas Piggin , Masami Hiramatsu Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This is v2 of the series posted here: http://lkml.kernel.org/r/cover.1702045299.git.naveen@kernel.org Since v2, the primary change is that the entire ftrace sequence is moved out of line and this is now restricted to 64-bit powerpc by default. Patch 5 has the details. I have dropped patches to enable DYNAMIC_FTRACE_WITH_CALL_OPS and ftrace direct support so that this approach can be finalized. This series depends on Benjamin Gray's series adding support for patch_ulong(): http://lkml.kernel.org/r/20240515024445.236364-1-bgray@linux.ibm.com Appreciate feedback on the approach. Thanks, Naveen Naveen N Rao (5): powerpc/kprobes: Use ftrace to determine if a probe is at function entry powerpc/ftrace: Remove pointer to struct module from dyn_arch_ftrace powerpc/ftrace: Unify 32-bit and 64-bit ftrace entry code kbuild: Add generic hook for architectures to use before the final vmlinux link powerpc64/ftrace: Move ftrace sequence out of line arch/Kconfig | 3 + arch/powerpc/Kconfig | 4 + arch/powerpc/Makefile | 4 + arch/powerpc/include/asm/ftrace.h | 11 +- arch/powerpc/include/asm/module.h | 5 + arch/powerpc/kernel/asm-offsets.c | 4 + arch/powerpc/kernel/kprobes.c | 18 +-- arch/powerpc/kernel/module_64.c | 67 +++++++- arch/powerpc/kernel/trace/ftrace.c | 196 ++++++++++++++++++++--- arch/powerpc/kernel/trace/ftrace_64_pg.c | 73 ++++----- arch/powerpc/kernel/trace/ftrace_entry.S | 75 ++++++--- arch/powerpc/kernel/vmlinux.lds.S | 3 +- arch/powerpc/tools/vmlinux_o.sh | 47 ++++++ scripts/link-vmlinux.sh | 18 ++- 14 files changed, 419 insertions(+), 109 deletions(-) create mode 100755 arch/powerpc/tools/vmlinux_o.sh base-commit: 2c644f2847c188b4fa545e602e4a1d4db55e8c8d prerequisite-patch-id: a1d50e589288239d5a8b1c1f354cd4737057c9d3 prerequisite-patch-id: da4142d56880861bd0ad7ad7087c9e2670a2ee54 prerequisite-patch-id: 609d292e054b2396b603890522a940fa0bdfb6d8 prerequisite-patch-id: 6f7213fb77b1260defbf43be0e47bff9c80054cc prerequisite-patch-id: ad3b71bf071ae4ba1bee5b087e61a2055772a74f -- 2.45.2