From patchwork Wed Apr 26 01:49:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Youling Tang X-Patchwork-Id: 13223969 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 6EAACC77B7C for ; Wed, 26 Apr 2023 01:49:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239110AbjDZBtV (ORCPT ); Tue, 25 Apr 2023 21:49:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238447AbjDZBtV (ORCPT ); Tue, 25 Apr 2023 21:49:21 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4BDF413E; Tue, 25 Apr 2023 18:49:19 -0700 (PDT) Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8DxSuocg0hkU9AAAA--.1393S3; Wed, 26 Apr 2023 09:49:16 +0800 (CST) Received: from bogon.localdomain (unknown [113.200.148.30]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dx97Uag0hkROI7AA--.15428S2; Wed, 26 Apr 2023 09:49:14 +0800 (CST) From: Youling Tang To: Huacai Chen , Steven Rostedt , Masami Hiramatsu , Mark Rutland Cc: WANG Xuerui , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, loongarch@lists.linux.dev, loongson-kernel@lists.loongnix.cn Subject: [PATCH 0/5] LoongArch: ftrace: Add direct call support code simplification Date: Wed, 26 Apr 2023 09:49:09 +0800 Message-Id: <1682473754-25077-1-git-send-email-tangyouling@loongson.cn> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Dx97Uag0hkROI7AA--.15428S2 X-CM-SenderInfo: 5wdqw5prxox03j6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjvJXoW7uFWUJFWrWF4kJr1xXF15twb_yoW8trWDpr W3uasrGF48AFsxWwsI9a45WF13t34xAFyDua15CryYkFyDur4UZrsayFZxG343J3s5GrW2 qFnrJw18KF13ZaDanT9S1TB71UUUUjUqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bfAYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s 1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwA2z4 x0Y4vEx4A2jsIE14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAa w2AFwI0_Jrv_JF1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44 I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JF0_Jw1lYx0Ex4A2 jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY1x0262 kKe7AKxVWUAVWUtwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwCFI7km 07C267AKxVWUXVWUAwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r 1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWU JVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r 1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Jr0_GrUv cSsGvfC2KfnxnUUI43ZEXa7IU8HKZJUUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org [Patch 1-2]: Fix build errors and simplify code. [Patch 3-4]: This series adds DYNAMIC_FTRACE_WITH_DIRECT_CALLS support for LoongArch. SAMPLE_FTRACE_DIRECT and SAMPLE_FTRACE_DIRECT_MULTI are also included here as the samples for testing DIRECT_CALLS related interface. Part of the code refers to arm64 and riscv. The following tests have been passed in my local 3A5000 machine. - ftrace*.ko - tools/testing/selftests/ftrace/ eg: [loongson@linux linux]$ sudo insmod samples/ftrace/ftrace-direct-too.ko [root@linux linux]# cat /sys/kernel/debug/tracing/trace | tail rmmod-4552 [001] ..... 3166.654540: 0xffff800002094040: handle mm fault vma=00000000d0dbdb16 address=7ffff2a793e8 flags=254 rmmod-4552 [001] ..... 3166.654550: 0xffff800002094040: handle mm fault vma=0000000047694d8b address=555570700008 flags=255 rmmod-4552 [001] ..... 3166.654557: 0xffff800002094040: handle mm fault vma=00000000d0dbdb16 address=7ffff29e6eb0 flags=254 rmmod-4552 [001] ..... 3166.654561: 0xffff800002094040: handle mm fault vma=00000000d0dbdb16 address=7ffff297d480 flags=254 [Patch 5]: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses. Note: This patch depends on regs_set_return_value() in the patch "LoongArch: Add support for function error injection". Qing Zhang (1): LoongArch: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses Youling Tang (4): LoongArch: Fix build error if CONFIG_DYNAMIC_FTRACE_WITH_REGS is not set LoongArch: ftrace: Implement ftrace_find_callable_addr() to simplify code LoongArch: ftrace: Add direct call support LoongArch: ftrace: Add direct call trampoline samples support arch/loongarch/Kconfig | 3 + arch/loongarch/include/asm/ftrace.h | 37 ++++++ arch/loongarch/kernel/ftrace_dyn.c | 132 +++++++++++--------- arch/loongarch/kernel/mcount_dyn.S | 7 +- samples/ftrace/ftrace-direct-modify.c | 34 +++++ samples/ftrace/ftrace-direct-multi-modify.c | 41 ++++++ samples/ftrace/ftrace-direct-multi.c | 25 ++++ samples/ftrace/ftrace-direct-too.c | 27 ++++ samples/ftrace/ftrace-direct.c | 23 ++++ 9 files changed, 266 insertions(+), 63 deletions(-)