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linux/tools/perf/util/perf_regs.h

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 07:07:57 -07:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_REGS_H
#define __PERF_REGS_H
#include <linux/types.h>
#include <linux/compiler.h>
struct regs_dump;
struct sample_reg {
const char *name;
uint64_t mask;
};
#define SMPL_REG_MASK(b) (1ULL << (b))
#define SMPL_REG(n, b) { .name = #n, .mask = SMPL_REG_MASK(b) }
#define SMPL_REG2_MASK(b) (3ULL << (b))
#define SMPL_REG2(n, b) { .name = #n, .mask = SMPL_REG2_MASK(b) }
#define SMPL_REG_END { .name = NULL }
enum {
SDT_ARG_VALID = 0,
SDT_ARG_SKIP,
};
int arch_sdt_arg_parse_op(char *old_op, char **new_op);
uint64_t arch__intr_reg_mask(void);
uint64_t arch__user_reg_mask(void);
const struct sample_reg *arch__sample_reg_masks(void);
perf tools: Avoid 'sample_reg_masks' being const + weak Being const + weak breaks with some compilers that constant-propagate from the weak symbol. This behavior is outside of the specification, but in LLVM is chosen to match GCC's behavior. LLVM's implementation was set in this patch: https://github.com/llvm/llvm-project/commit/f49573d1eedcf1e44893d5a062ac1b72c8419646 A const + weak symbol is set to be weak_odr: https://llvm.org/docs/LangRef.html ODR is one definition rule, and given there is one constant definition constant-propagation is possible. It is possible to get this code to miscompile with LLVM when applying link time optimization. As compilers become more aggressive, this is likely to break in more instances. Move the definition of sample_reg_masks to the conditional part of perf_regs.h and guard usage with HAVE_PERF_REGS_SUPPORT. This avoids the weak symbol. Fix an issue when HAVE_PERF_REGS_SUPPORT isn't defined from patch v1. In v3, add perf_regs.c for architectures that HAVE_PERF_REGS_SUPPORT but don't declare sample_regs_masks. Further notes: Jiri asked: "Is this just a precaution or you actualy saw some breakage?" Ian answered: "We saw a breakage with clang with thinlto enabled for linking. Our compiler team had recently seen, and were surprised by, a similar issue and were able to dig out the weak ODR issue." Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: clang-built-linux@googlegroups.com Cc: Guo Ren <guoren@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: linux-riscv@lists.infradead.org Cc: Mao Han <han_mao@c-sky.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20191001003623.255186-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-30 17:36:23 -07:00
perf arch: Support register names from all archs When reading a perf.data file with register values, there is a mismatch between the names and the values of the registers because the tool is built using only the register names from the local architecture. Reading a perf.data file that was recorded on ARM64, gives the following erroneous output on an X86 machine: # perf report -i perf_arm64.data -D [...] 24661932634451 0x698 [0x21d0]: PERF_RECORD_SAMPLE(IP, 0x1): 43239/43239: 0xffffc5be8f100f98 period: 1 addr: 0 ... user regs: mask 0x1ffffffff ABI 64-bit .... AX 0x0000ffffd1515817 .... BX 0x0000ffffd1515480 .... CX 0x0000aaaadabf6c80 .... DX 0x000000000000002e .... SI 0x0000000040100401 .... DI 0x0040600200000080 .... BP 0x0000ffffd1510e10 .... SP 0x0000000000000000 .... IP 0x00000000000000dd .... FLAGS 0x0000ffffd1510cd0 .... CS 0x0000000000000000 .... SS 0x0000000000000030 .... DS 0x0000ffffa569a208 .... ES 0x0000000000000000 .... FS 0x0000000000000000 .... GS 0x0000000000000000 .... R8 0x0000aaaad3de9650 .... R9 0x0000ffffa57397f0 .... R10 0x0000000000000001 .... R11 0x0000ffffa57fd000 .... R12 0x0000ffffd1515817 .... R13 0x0000ffffd1515480 .... R14 0x0000aaaadabf6c80 .... R15 0x0000000000000000 .... unknown 0x0000000000000001 .... unknown 0x0000000000000000 .... unknown 0x0000000000000000 .... unknown 0x0000000000000000 .... unknown 0x0000000000000000 .... unknown 0x0000ffffd1510d90 .... unknown 0x0000ffffa5739b90 .... unknown 0x0000ffffd1510d80 .... XMM0 0x0000ffffa57392c8 ... thread: perf-exec:43239 ...... dso: [kernel.kallsyms] As can be seen, the register names correspond to X86 registers, even though the perf.data file was recorded on an ARM64 system. After this patch, the output of the command displays the correct register names: # perf report -i perf_arm64.data -D [...] 24661932634451 0x698 [0x21d0]: PERF_RECORD_SAMPLE(IP, 0x1): 43239/43239: 0xffffc5be8f100f98 period: 1 addr: 0 ... user regs: mask 0x1ffffffff ABI 64-bit .... x0 0x0000ffffd1515817 .... x1 0x0000ffffd1515480 .... x2 0x0000aaaadabf6c80 .... x3 0x000000000000002e .... x4 0x0000000040100401 .... x5 0x0040600200000080 .... x6 0x0000ffffd1510e10 .... x7 0x0000000000000000 .... x8 0x00000000000000dd .... x9 0x0000ffffd1510cd0 .... x10 0x0000000000000000 .... x11 0x0000000000000030 .... x12 0x0000ffffa569a208 .... x13 0x0000000000000000 .... x14 0x0000000000000000 .... x15 0x0000000000000000 .... x16 0x0000aaaad3de9650 .... x17 0x0000ffffa57397f0 .... x18 0x0000000000000001 .... x19 0x0000ffffa57fd000 .... x20 0x0000ffffd1515817 .... x21 0x0000ffffd1515480 .... x22 0x0000aaaadabf6c80 .... x23 0x0000000000000000 .... x24 0x0000000000000001 .... x25 0x0000000000000000 .... x26 0x0000000000000000 .... x27 0x0000000000000000 .... x28 0x0000000000000000 .... x29 0x0000ffffd1510d90 .... lr 0x0000ffffa5739b90 .... sp 0x0000ffffd1510d80 .... pc 0x0000ffffa57392c8 ... thread: perf-exec:43239 ...... dso: [kernel.kallsyms] Tester comments: Athira reports: "Looks good to me. Tested this patchset in powerpc by capturing regs in powerpc and doing perf report to read the data from x86." Reported-by: Alexandre Truong <alexandre.truong@arm.com> Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: German Gomez <german.gomez@arm.com> Tested-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20211207180653.1147374-4-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-07 11:06:52 -07:00
const char *perf_reg_name(int id, const char *arch);
int perf_reg_value(u64 *valp, struct regs_dump *regs, int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t perf_arch_reg_ip(const char *arch);
uint64_t perf_arch_reg_sp(const char *arch);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_arm64(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_arm64(void);
uint64_t __perf_reg_sp_arm64(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_arm(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_arm(void);
uint64_t __perf_reg_sp_arm(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_csky(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_csky(void);
uint64_t __perf_reg_sp_csky(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_loongarch(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_loongarch(void);
uint64_t __perf_reg_sp_loongarch(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_mips(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_mips(void);
uint64_t __perf_reg_sp_mips(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_powerpc(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_powerpc(void);
uint64_t __perf_reg_sp_powerpc(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_riscv(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_riscv(void);
uint64_t __perf_reg_sp_riscv(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_s390(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_s390(void);
uint64_t __perf_reg_sp_s390(void);
perf parse-regs: Refactor arch register parsing functions Every architecture has a specific register parsing function for returning register name based on register index, to support cross analysis (e.g. we use perf x86 binary to parse Arm64's perf data), we build all these register parsing functions into the tool, this is why we place all related functions into util/perf_regs.c. Unfortunately, since util/perf_regs.c needs to include every arch's perf_regs.h, this easily introduces duplicated definitions coming from multiple headers, finally it's fragile for building and difficult for maintenance. We cannot simply move these register parsing functions into the corresponding 'arch' folder, the folder is only conditionally built based on the target architecture. Therefore, this commit creates a new folder util/perf-regs-arch/ and uses a dedicated source file to keep every architecture's register parsing function to avoid definition conflicts. This is only a refactoring, no functionality change is expected. Committer notes: Had to add util/perf-regs-arch/*.c to tools/perf/util/python-ext-sources to keep 'perf test python' passing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:54 -07:00
const char *__perf_reg_name_x86(int id);
perf parse-regs: Introduce functions perf_arch_reg_{ip|sp}() The current code uses macros PERF_REG_IP and PERF_REG_SP for parsing registers and we build perf with these macros statically, which means it only can correctly analyze CPU registers for the native architecture and fails to support cross analysis (e.g. we build perf on x86 and cannot analyze Arm64's registers). We need to generalize util/perf_regs.c for support multi architectures, as a first step, this commit introduces new functions perf_arch_reg_ip() and perf_arch_reg_sp(), these two functions dynamically return IP and SP register index respectively according to the parameter "arch". Every architecture has its own functions (like __perf_reg_ip_arm64 and __perf_reg_sp_arm64), these architecture specific functions are defined in each arch source file under folder util/perf-regs-arch; at the end all of them are built into the tool for cross analysis. Committer notes: Make DWARF_MINIMAL_REGS() an inline function, so that we can use the __maybe_unused attribute for the 'arch' parameter, as this will avoid a build failure when that variable is unused in the callers. That happens when building on unsupported architectures, the ones without HAVE_PERF_REGS_SUPPORT defined. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Lin <eric.lin@sifive.com> Cc: Fangrui Song <maskray@google.com> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20230606014559.21783-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-05 18:45:55 -07:00
uint64_t __perf_reg_ip_x86(void);
uint64_t __perf_reg_sp_x86(void);
static inline uint64_t DWARF_MINIMAL_REGS(const char *arch)
{
return (1ULL << perf_arch_reg_ip(arch)) | (1ULL << perf_arch_reg_sp(arch));
}
#endif /* __PERF_REGS_H */