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 X-Spam-Level: X-Spam-Status: No, score=-12.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6271DC04AAF for ; Sat, 18 May 2019 08:48:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2487E2166E for ; Sat, 18 May 2019 08:48:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="vUp4ZQ7k" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729258AbfERIsM (ORCPT ); Sat, 18 May 2019 04:48:12 -0400 Received: from terminus.zytor.com ([198.137.202.136]:38141 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726056AbfERIsL (ORCPT ); Sat, 18 May 2019 04:48:11 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x4I8ljqE1731589 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 18 May 2019 01:47:45 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x4I8ljqE1731589 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019041745; t=1558169266; bh=p7yx5k+JSMP8oELhO3KTCTxMFrEjiZ2HiIp8LVs7fGw=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=vUp4ZQ7kFNd3R069ah/jCsZPuzdrejcXbwjki75WLlGX2jW2rfRvYw/0BWMnj7Vd8 ed2evb6QMr9UVizX5gLBX08kwbrnqacLOungAA54qy97b4U9P2kDgB13DpBPUiBujK DAUhOhOzVyHG+WczsH5S/ghHhQoFKIH3H0MLIWpTrgAIoH7NiX2eSdqVUPyBZ8D9m9 OCUtTDF/A3qeEfW9UmzsSBnEsp+OERy/zepiJiFamXntAHJvuOfKsq40vN45Ftz6uy 5ymPj4RHs5xsL0bGsRVr1gFr2/xqaXzqLUCGwyFreGO0b32SYcy8TzAVEOZ01Y/cgc 1VyEkCQt9+6hw== Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x4I8liS31731586; Sat, 18 May 2019 01:47:44 -0700 Date: Sat, 18 May 2019 01:47:44 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Mao Han Message-ID: Cc: tglx@linutronix.de, ren_guo@c-sky.com, linux-kernel@vger.kernel.org, acme@redhat.com, mingo@kernel.org, jolsa@redhat.com, hpa@zytor.com, alexander.shishkin@linux.intel.com, namhyung@kernel.org, han_mao@c-sky.com, peterz@infradead.org, arnd@arndb.de Reply-To: namhyung@kernel.org, alexander.shishkin@linux.intel.com, jolsa@redhat.com, hpa@zytor.com, mingo@kernel.org, arnd@arndb.de, han_mao@c-sky.com, peterz@infradead.org, ren_guo@c-sky.com, tglx@linutronix.de, acme@redhat.com, linux-kernel@vger.kernel.org In-Reply-To: <1555860794-10572-1-git-send-email-guoren@kernel.org> References: <1555860794-10572-1-git-send-email-guoren@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] csky: Add support for libdw Git-Commit-ID: b399ec215b8488468b947c34dfc097003408fe34 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: b399ec215b8488468b947c34dfc097003408fe34 Gitweb: https://git.kernel.org/tip/b399ec215b8488468b947c34dfc097003408fe34 Author: Mao Han AuthorDate: Sun, 21 Apr 2019 23:33:14 +0800 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 15 May 2019 16:36:46 -0300 csky: Add support for libdw This patch add support for DWARF register mappings and libdw registers initialization, which is used by perf callchain analyzing when --call-graph=dwarf is given. Here is the elfutils csky backend patch set: https://sourceware.org/ml/elfutils-devel/2019-q2/msg00007.html Signed-off-by: Mao Han Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Jiri Olsa Cc: linux-arch@vger.kernel.org Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1555860794-10572-1-git-send-email-guoren@kernel.org Signed-off-by: Guo Ren Signed-off-by: Arnaldo Carvalho de Melo --- tools/arch/csky/include/uapi/asm/perf_regs.h | 51 ++++++++++++++ tools/perf/Makefile.config | 6 +- tools/perf/arch/{nds32 => csky}/Build | 0 tools/perf/arch/{sh => csky}/Makefile | 0 tools/perf/arch/csky/include/perf_regs.h | 100 +++++++++++++++++++++++++++ tools/perf/arch/csky/util/Build | 2 + tools/perf/arch/csky/util/dwarf-regs.c | 49 +++++++++++++ tools/perf/arch/csky/util/unwind-libdw.c | 77 +++++++++++++++++++++ 8 files changed, 284 insertions(+), 1 deletion(-) diff --git a/tools/arch/csky/include/uapi/asm/perf_regs.h b/tools/arch/csky/include/uapi/asm/perf_regs.h new file mode 100644 index 000000000000..ee323d818592 --- /dev/null +++ b/tools/arch/csky/include/uapi/asm/perf_regs.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef _ASM_CSKY_PERF_REGS_H +#define _ASM_CSKY_PERF_REGS_H + +/* Index of struct pt_regs */ +enum perf_event_csky_regs { + PERF_REG_CSKY_TLS, + PERF_REG_CSKY_LR, + PERF_REG_CSKY_PC, + PERF_REG_CSKY_SR, + PERF_REG_CSKY_SP, + PERF_REG_CSKY_ORIG_A0, + PERF_REG_CSKY_A0, + PERF_REG_CSKY_A1, + PERF_REG_CSKY_A2, + PERF_REG_CSKY_A3, + PERF_REG_CSKY_REGS0, + PERF_REG_CSKY_REGS1, + PERF_REG_CSKY_REGS2, + PERF_REG_CSKY_REGS3, + PERF_REG_CSKY_REGS4, + PERF_REG_CSKY_REGS5, + PERF_REG_CSKY_REGS6, + PERF_REG_CSKY_REGS7, + PERF_REG_CSKY_REGS8, + PERF_REG_CSKY_REGS9, +#if defined(__CSKYABIV2__) + PERF_REG_CSKY_EXREGS0, + PERF_REG_CSKY_EXREGS1, + PERF_REG_CSKY_EXREGS2, + PERF_REG_CSKY_EXREGS3, + PERF_REG_CSKY_EXREGS4, + PERF_REG_CSKY_EXREGS5, + PERF_REG_CSKY_EXREGS6, + PERF_REG_CSKY_EXREGS7, + PERF_REG_CSKY_EXREGS8, + PERF_REG_CSKY_EXREGS9, + PERF_REG_CSKY_EXREGS10, + PERF_REG_CSKY_EXREGS11, + PERF_REG_CSKY_EXREGS12, + PERF_REG_CSKY_EXREGS13, + PERF_REG_CSKY_EXREGS14, + PERF_REG_CSKY_HI, + PERF_REG_CSKY_LO, + PERF_REG_CSKY_DCSR, +#endif + PERF_REG_CSKY_MAX, +}; +#endif /* _ASM_CSKY_PERF_REGS_H */ diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 0c52a01dc759..e1bb5288ab1f 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -59,6 +59,10 @@ ifeq ($(SRCARCH),arm64) LIBUNWIND_LIBS = -lunwind -lunwind-aarch64 endif +ifeq ($(SRCARCH),csky) + NO_PERF_REGS := 0 +endif + ifeq ($(ARCH),s390) NO_PERF_REGS := 0 NO_SYSCALL_TABLE := 0 @@ -77,7 +81,7 @@ endif # Disable it on all other architectures in case libdw unwind # support is detected in system. Add supported architectures # to the check. -ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390)) +ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky)) NO_LIBDW_DWARF_UNWIND := 1 endif diff --git a/tools/perf/arch/nds32/Build b/tools/perf/arch/csky/Build similarity index 100% copy from tools/perf/arch/nds32/Build copy to tools/perf/arch/csky/Build diff --git a/tools/perf/arch/sh/Makefile b/tools/perf/arch/csky/Makefile similarity index 100% copy from tools/perf/arch/sh/Makefile copy to tools/perf/arch/csky/Makefile diff --git a/tools/perf/arch/csky/include/perf_regs.h b/tools/perf/arch/csky/include/perf_regs.h new file mode 100644 index 000000000000..8f336ea1161a --- /dev/null +++ b/tools/perf/arch/csky/include/perf_regs.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include +#include +#include + +#define PERF_REGS_MASK ((1ULL << PERF_REG_CSKY_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_CSKY_MAX +#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 + +#define PERF_REG_IP PERF_REG_CSKY_PC +#define PERF_REG_SP PERF_REG_CSKY_SP + +static inline const char *perf_reg_name(int id) +{ + switch (id) { + case PERF_REG_CSKY_A0: + return "a0"; + case PERF_REG_CSKY_A1: + return "a1"; + case PERF_REG_CSKY_A2: + return "a2"; + case PERF_REG_CSKY_A3: + return "a3"; + case PERF_REG_CSKY_REGS0: + return "regs0"; + case PERF_REG_CSKY_REGS1: + return "regs1"; + case PERF_REG_CSKY_REGS2: + return "regs2"; + case PERF_REG_CSKY_REGS3: + return "regs3"; + case PERF_REG_CSKY_REGS4: + return "regs4"; + case PERF_REG_CSKY_REGS5: + return "regs5"; + case PERF_REG_CSKY_REGS6: + return "regs6"; + case PERF_REG_CSKY_REGS7: + return "regs7"; + case PERF_REG_CSKY_REGS8: + return "regs8"; + case PERF_REG_CSKY_REGS9: + return "regs9"; + case PERF_REG_CSKY_SP: + return "sp"; + case PERF_REG_CSKY_LR: + return "lr"; + case PERF_REG_CSKY_PC: + return "pc"; +#if defined(__CSKYABIV2__) + case PERF_REG_CSKY_EXREGS0: + return "exregs0"; + case PERF_REG_CSKY_EXREGS1: + return "exregs1"; + case PERF_REG_CSKY_EXREGS2: + return "exregs2"; + case PERF_REG_CSKY_EXREGS3: + return "exregs3"; + case PERF_REG_CSKY_EXREGS4: + return "exregs4"; + case PERF_REG_CSKY_EXREGS5: + return "exregs5"; + case PERF_REG_CSKY_EXREGS6: + return "exregs6"; + case PERF_REG_CSKY_EXREGS7: + return "exregs7"; + case PERF_REG_CSKY_EXREGS8: + return "exregs8"; + case PERF_REG_CSKY_EXREGS9: + return "exregs9"; + case PERF_REG_CSKY_EXREGS10: + return "exregs10"; + case PERF_REG_CSKY_EXREGS11: + return "exregs11"; + case PERF_REG_CSKY_EXREGS12: + return "exregs12"; + case PERF_REG_CSKY_EXREGS13: + return "exregs13"; + case PERF_REG_CSKY_EXREGS14: + return "exregs14"; + case PERF_REG_CSKY_TLS: + return "tls"; + case PERF_REG_CSKY_HI: + return "hi"; + case PERF_REG_CSKY_LO: + return "lo"; +#endif + default: + return NULL; + } + + return NULL; +} + +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/csky/util/Build b/tools/perf/arch/csky/util/Build new file mode 100644 index 000000000000..1160bb2332ba --- /dev/null +++ b/tools/perf/arch/csky/util/Build @@ -0,0 +1,2 @@ +perf-$(CONFIG_DWARF) += dwarf-regs.o +perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/csky/util/dwarf-regs.c b/tools/perf/arch/csky/util/dwarf-regs.c new file mode 100644 index 000000000000..ca86ecaeacbb --- /dev/null +++ b/tools/perf/arch/csky/util/dwarf-regs.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. +// Mapping of DWARF debug register numbers into register names. + +#include +#include + +#if defined(__CSKYABIV2__) +#define CSKY_MAX_REGS 73 +const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = { + /* r0 ~ r8 */ + "%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1", "%regs2", "%regs3", + /* r9 ~ r15 */ + "%regs4", "%regs5", "%regs6", "%regs7", "%regs8", "%regs9", "%sp", + "%lr", + /* r16 ~ r23 */ + "%exregs0", "%exregs1", "%exregs2", "%exregs3", "%exregs4", + "%exregs5", "%exregs6", "%exregs7", + /* r24 ~ r31 */ + "%exregs8", "%exregs9", "%exregs10", "%exregs11", "%exregs12", + "%exregs13", "%exregs14", "%tls", + "%pc", NULL, NULL, NULL, "%hi", "%lo", NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "%epc", +}; +#else +#define CSKY_MAX_REGS 57 +const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = { + /* r0 ~ r8 */ + "%sp", "%regs9", "%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1", + /* r9 ~ r15 */ + "%regs2", "%regs3", "%regs4", "%regs5", "%regs6", "%regs7", "%regs8", + "%lr", + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "%epc", +}; +#endif + +const char *get_arch_regstr(unsigned int n) +{ + return (n < CSKY_MAX_REGS) ? csky_dwarf_regs_table[n] : NULL; +} diff --git a/tools/perf/arch/csky/util/unwind-libdw.c b/tools/perf/arch/csky/util/unwind-libdw.c new file mode 100644 index 000000000000..4bb4a06776e4 --- /dev/null +++ b/tools/perf/arch/csky/util/unwind-libdw.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + +#include +#include "../../util/unwind-libdw.h" +#include "../../util/perf_regs.h" +#include "../../util/event.h" + +bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) +{ + struct unwind_info *ui = arg; + struct regs_dump *user_regs = &ui->sample->user_regs; + Dwarf_Word dwarf_regs[PERF_REG_CSKY_MAX]; + +#define REG(r) ({ \ + Dwarf_Word val = 0; \ + perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r); \ + val; \ +}) + +#if defined(__CSKYABIV2__) + dwarf_regs[0] = REG(A0); + dwarf_regs[1] = REG(A1); + dwarf_regs[2] = REG(A2); + dwarf_regs[3] = REG(A3); + dwarf_regs[4] = REG(REGS0); + dwarf_regs[5] = REG(REGS1); + dwarf_regs[6] = REG(REGS2); + dwarf_regs[7] = REG(REGS3); + dwarf_regs[8] = REG(REGS4); + dwarf_regs[9] = REG(REGS5); + dwarf_regs[10] = REG(REGS6); + dwarf_regs[11] = REG(REGS7); + dwarf_regs[12] = REG(REGS8); + dwarf_regs[13] = REG(REGS9); + dwarf_regs[14] = REG(SP); + dwarf_regs[15] = REG(LR); + dwarf_regs[16] = REG(EXREGS0); + dwarf_regs[17] = REG(EXREGS1); + dwarf_regs[18] = REG(EXREGS2); + dwarf_regs[19] = REG(EXREGS3); + dwarf_regs[20] = REG(EXREGS4); + dwarf_regs[21] = REG(EXREGS5); + dwarf_regs[22] = REG(EXREGS6); + dwarf_regs[23] = REG(EXREGS7); + dwarf_regs[24] = REG(EXREGS8); + dwarf_regs[25] = REG(EXREGS9); + dwarf_regs[26] = REG(EXREGS10); + dwarf_regs[27] = REG(EXREGS11); + dwarf_regs[28] = REG(EXREGS12); + dwarf_regs[29] = REG(EXREGS13); + dwarf_regs[30] = REG(EXREGS14); + dwarf_regs[31] = REG(TLS); + dwarf_regs[32] = REG(PC); +#else + dwarf_regs[0] = REG(SP); + dwarf_regs[1] = REG(REGS9); + dwarf_regs[2] = REG(A0); + dwarf_regs[3] = REG(A1); + dwarf_regs[4] = REG(A2); + dwarf_regs[5] = REG(A3); + dwarf_regs[6] = REG(REGS0); + dwarf_regs[7] = REG(REGS1); + dwarf_regs[8] = REG(REGS2); + dwarf_regs[9] = REG(REGS3); + dwarf_regs[10] = REG(REGS4); + dwarf_regs[11] = REG(REGS5); + dwarf_regs[12] = REG(REGS6); + dwarf_regs[13] = REG(REGS7); + dwarf_regs[14] = REG(REGS8); + dwarf_regs[15] = REG(LR); +#endif + dwfl_thread_state_register_pc(thread, REG(PC)); + + return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX, + dwarf_regs); +}