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[2620:137:e000::3:7]) by mx.google.com with ESMTPS id g8-20020a17090a9b8800b00285105c440esi1255876pjp.120.2023.11.30.04.16.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Nov 2023 04:16:38 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=UraiEC+0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 3F7C280779BC; Thu, 30 Nov 2023 04:15:58 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231893AbjK3MPk (ORCPT <rfc822;ruipengqi7@gmail.com> + 99 others); Thu, 30 Nov 2023 07:15:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231784AbjK3MPj (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Thu, 30 Nov 2023 07:15:39 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02165D40 for <linux-kernel@vger.kernel.org>; Thu, 30 Nov 2023 04:15:45 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0995C433C7; Thu, 30 Nov 2023 12:15:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701346544; bh=1NPXRHfCmv3muigvSa8lBUFSABkyhpUQba/UEEWr/rM=; h=From:To:Cc:Subject:Date:From; b=UraiEC+0QfcuybZdyWf77r8dRXNuwqKPlsmovyA/HvHKNSE2PDXUCtfDBU8T68jqW zxEKr4hNGcnDOaPXu4C4xhfi7mP5vO+f09oHk4/lej/LLoB6WRdZw3jZvmrbiyF3u1 And2p+iR8RhiMbB1QbhwONyweWsjl/QRfK+uA51E2i/GyaDi7anOFcRdyHT2Z8sjmi mpGED66jC56FrIQO0aSqBzezxrvITqL5riM9hDjkARae3MWYZ1iS6j4z0sV2PqwXB9 ZvT5apIey29b7b8eA04UgAvV/wEH2ePnTo8UCSwxB0gq54z3vMhY3a58/T9VyzcKaO F9zd6U4HJufEw== From: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= <bjorn@kernel.org> To: Steven Rostedt <rostedt@goodmis.org>, Masami Hiramatsu <mhiramat@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Song Shuai <suagrfillet@gmail.com>, Guo Ren <guoren@kernel.org>, linux-riscv@lists.infradead.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= <bjorn@rivosinc.com>, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, songshuaishuai@tinylab.org Subject: [PATCH v12 for-next 0/4] riscv: ftrace: Miscellaneous ftrace improvements Date: Thu, 30 Nov 2023 13:15:27 +0100 Message-Id: <20231130121531.1178502-1-bjorn@kernel.org> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Thu, 30 Nov 2023 04:15:58 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783991211292101527 X-GMAIL-MSGID: 1783991211292101527 |
Series |
riscv: ftrace: Miscellaneous ftrace improvements
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Message
Björn Töpel
Nov. 30, 2023, 12:15 p.m. UTC
From: Björn Töpel <bjorn@rivosinc.com>
NB! Song told me that he would not have the time work on this series,
so I picked it up.
This series includes a three ftrace improvements for RISC-V:
1. Do not require to run recordmcount at build time (patch 1)
2. Simplification of the function graph functionality (patch 2)
3. Enable DYNAMIC_FTRACE_WITH_DIRECT_CALLS (patch 3 and 4)
The series has been tested on Qemu/rv64 virt/Debian sid with the
following test configs:
CONFIG_FTRACE_SELFTEST=y
CONFIG_FTRACE_STARTUP_TEST=y
CONFIG_SAMPLE_FTRACE_DIRECT=m
CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m
CONFIG_SAMPLE_FTRACE_OPS=m
All tests pass.
Cheers,
Björn
Changes in v12:
- Massaged the commit messages a bit.
- Squashed the samples patches, so that the rv32 support is included
from the start.
- Minor whitespace changes in the mcount-dyn.S.
- Minor style changes.
Changes in v11:
https://lore.kernel.org/linux-riscv/20230627111612.761164-1-suagrfillet@gmail.com/
- append a patch that makes the DIRECT_CALL samples support RV32I in
this series fixing the rv32 build failure reported by Palmer
- validated with ftrace boottime selftest and manual sample modules test
in qemu-system for RV32I and RV64I
Changes in v10:
https://lore.kernel.org/all/20230511093234.3123181-1-suagrfillet@gmail.com/
- add Acked-by from Björn Töpel in patch 2 and patch 4
- replace `move` with `mv` in patch3
- prettify patch 2/4 with proper tabs
Changes in v9:
https://lore.kernel.org/linux-riscv/20230510101857.2953955-1-suagrfillet@gmail.com/
1. add Acked-by from Björn Töpel in patch 1
2. rebase patch2/patch3 on Linux v6.4-rc1
- patch 2: to make the `SAVE_ABI_REGS` configurable, revert the
modification of mcount-dyn.S from commit (45b32b946a97 "riscv:
entry: Consolidate general regs saving/restoring")
- patch 3: to pass the trace_selftest, add the implement of
`ftrace_stub_direct_tramp` from commit (fee86a4ed536 "ftrace:
selftest: remove broken trace_direct_tramp") ; and fixup the context
conflict in Kconfig
Changes in v8:
https://lore.kernel.org/linux-riscv/20230324033342.3177979-1-suagrfillet@gmail.com/
- Fix incorrect address values in the 4nd patch
- Rebased on v6.3-rc2
Changes in v7:
https://lore.kernel.org/linux-riscv/20230112090603.1295340-1-guoren@kernel.org/
- Fixup RESTORE_ABI_REGS by remove PT_T0(sp) overwrite.
- Add FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY [1]
- Fixup kconfig with HAVE_SAMPLE_FTRACE_DIRECT &
HAVE_SAMPLE_FTRACE_DIRECT_MULTI
Changes in v6:
https://lore.kernel.org/linux-riscv/20230107133549.4192639-1-guoren@kernel.org/
- Replace 8 with MCOUNT_INSN_SIZE
- Replace "REG_L a1, PT_RA(sp)" with "mv a1, ra"
- Add Evgenii Shatokhin comment
Changes in v5:
https://lore.kernel.org/linux-riscv/20221208091244.203407-1-guoren@kernel.org/
- Sort Kconfig entries in alphabetical order.
Changes in v4:
https://lore.kernel.org/linux-riscv/20221129033230.255947-1-guoren@kernel.org/
- Include [3] for maintenance. [Song Shuai]
Changes in V3:
https://lore.kernel.org/linux-riscv/20221123153950.2911981-1-guoren@kernel.org/
- Include [2] for maintenance. [Song Shuai]
[1]: https://lore.kernel.org/linux-riscv/CAAYs2=j3Eak9vU6xbAw0zPuoh00rh8v5C2U3fePkokZFibWs2g@mail.gmail.com/T/#t
[2]: https://lore.kernel.org/lkml/20221120084230.910152-1-suagrfillet@gmail.com/
[3]: https://lore.kernel.org/linux-riscv/20221123142025.1504030-1-suagrfillet@gmail.com/
Song Shuai (4):
riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
riscv: ftrace: Make function graph use ftrace directly
riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support
samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
arch/riscv/Kconfig | 4 +
arch/riscv/include/asm/ftrace.h | 18 +-
arch/riscv/kernel/ftrace.c | 30 ++-
arch/riscv/kernel/mcount-dyn.S | 198 ++++++++++++++++----
samples/ftrace/ftrace-direct-modify.c | 35 ++++
samples/ftrace/ftrace-direct-multi-modify.c | 41 ++++
samples/ftrace/ftrace-direct-multi.c | 25 +++
samples/ftrace/ftrace-direct-too.c | 28 +++
samples/ftrace/ftrace-direct.c | 24 +++
9 files changed, 348 insertions(+), 55 deletions(-)
base-commit: 3ca112b71f35dd5d99fc4571a56b5fc6f0c15814
Comments
Hello: This series was applied to riscv/linux.git (fixes) by Palmer Dabbelt <palmer@rivosinc.com>: On Thu, 30 Nov 2023 13:15:27 +0100 you wrote: > From: Björn Töpel <bjorn@rivosinc.com> > > NB! Song told me that he would not have the time work on this series, > so I picked it up. > > This series includes a three ftrace improvements for RISC-V: > > [...] Here is the summary with links: - [v12,for-next,1/4] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY https://git.kernel.org/riscv/c/b546d6363af4 - [v12,for-next,2/4] riscv: ftrace: Make function graph use ftrace directly https://git.kernel.org/riscv/c/35e61e8827ee - [v12,for-next,3/4] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support https://git.kernel.org/riscv/c/196c79f19a92 - [v12,for-next,4/4] samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] https://git.kernel.org/riscv/c/629291dd8499 You are awesome, thank you!