Changes in Build

0c0a20ec - perf arm: Remove dwarf-regs.c

Fri, 08 Nov 2024 23:45:54 +0000

perf arm: Remove dwarf-regs.cThe file just provides the function get_arch_regstr, however, if inthe only caller get_dwarf_regstr EM_HOST is used for the EM_NONE casethe function can never be called. So remove as dead code. Tidy up theEM_NONE cases for arm in dwarf-regs.c.Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Ian Rogers Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241108234606.429459-10-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/arch/arm/util/Build

5455d89b - perf build: Rename CONFIG_DWARF to CONFIG_LIBDW

Thu, 17 Oct 2024 00:13:54 +0000

perf build: Rename CONFIG_DWARF to CONFIG_LIBDWIn Makefile.config for unwinding the name dwarf implies eitherlibunwind or libdw. Make it clearer that CONFIG_DWARF is really justdefined when libdw is present by renaming to CONFIG_LIBDW.Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241017001354.56973-12-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/arch/arm/util/Build

e467705a - perf util: Make util its own library

Tue, 25 Jun 2024 21:41:15 +0000

perf util: Make util its own libraryMake the util directory into its own library. This is done to avoidcompiling code twice, once for the perf tool and once for the perfpython module. For convenience: arch/common.c scripts/perl/Perf-Trace-Util/Context.c scripts/python/Perf-Trace-Util/Context.care made part of this library.Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-7-irogers@google.com List of files: /linux-6.15/tools/perf/arch/arm/util/Build

42466b9f - perf tools: Avoid 'sample_reg_masks' being const + weak

Tue, 01 Oct 2019 00:36:23 +0000

perf tools: Avoid 'sample_reg_masks' being const + weakBeing const + weak breaks with some compilers that constant-propagatefrom the weak symbol. This behavior is outside of the specification, butin LLVM is chosen to match GCC's behavior.LLVM's implementation was set in this patch: https://github.com/llvm/llvm-project/commit/f49573d1eedcf1e44893d5a062ac1b72c8419646A const + weak symbol is set to be weak_odr: https://llvm.org/docs/LangRef.htmlODR is one definition rule, and given there is one constant definitionconstant-propagation is possible. It is possible to get this code tomiscompile with LLVM when applying link time optimization. As compilersbecome more aggressive, this is likely to break in more instances.Move the definition of sample_reg_masks to the conditional part ofperf_regs.h and guard usage with HAVE_PERF_REGS_SUPPORT. This avoids theweak 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 butdon'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 Reviewed-by: Nick Desaulniers Acked-by: Jiri Olsa Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: clang-built-linux@googlegroups.comCc: Guo Ren Cc: Kan Liang Cc: linux-riscv@lists.infradead.orgCc: Mao Han Cc: Mark Rutland Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20191001003623.255186-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build

5ff32883 - perf tools: Rename build libperf to perf

Wed, 13 Feb 2019 12:32:39 +0000

perf tools: Rename build libperf to perfRename build libperf to perf, because it's used to build perf.The libperf build object name will be used for libperf library.Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190213123246.4015-4-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build

a818c563 - perf tools: Add coresight etm PMU record capabilities

Fri, 16 Sep 2016 15:50:00 +0000

perf tools: Add coresight etm PMU record capabilitiesCoresight ETMs are IP blocks used to perform HW assisted tracing on aCPU core. This patch introduce the required auxiliary API functionsallowing the perf core to interact with a tracer.Signed-off-by: Mathieu Poirier Acked-by: Adrian Hunter Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Peter Zijlstra Cc: linux-arm-kernel@lists.infradead.orgLink: http://lkml.kernel.org/r/1474041004-13956-4-git-send-email-mathieu.poirier@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build

7e21b0d5 - perf tools: Make coresight PMU listable

Fri, 16 Sep 2016 15:49:59 +0000

perf tools: Make coresight PMU listableAdding the required mechanic allowing 'perf list pmu' to discovercoresight ETM/PTM tracers.Signed-off-by: Mathieu Poirier Acked-by: Adrian Hunter Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Peter Zijlstra Cc: linux-arm-kernel@lists.infradead.orgLink: http://lkml.kernel.org/r/1474041004-13956-3-git-send-email-mathieu.poirier@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build

9d8e14d3 - perf unwind: Separate local/remote libunwind config

Fri, 03 Jun 2016 03:33:15 +0000

perf unwind: Separate local/remote libunwind configCONFIG_LIBUNWIND/NO_LIBUNWIND are changed to CONFIG_LOCAL_LIBUNWIND/NO_LOCAL_LIBUNWIND for retaining local unwind features. The newCONFIG_LIBUNWIND stands for either local or remote or both unwind aresupported, and NO_LIBUNWIND means that neither local nor remote unwindis supported.LIBUNWIND_LIBS is eliminated in LDFLAGS if local libunwind is notsupported.Signed-off-by: He Kuang Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: David Ahern Cc: Ekaterina Tumanova Cc: Josh Poimboeuf Cc: Kan Liang Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Pekka Enberg Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Sukadev Bhattiprolu Cc: Wang Nan Link: http://lkml.kernel.org/r/1464924803-22214-7-git-send-email-hekuang@huawei.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build

f6ff0e6d - perf build: Add arch arm objects building

Tue, 30 Dec 2014 13:07:04 +0000

perf build: Add arch arm objects buildingMove the arm arch objects building under build framework to be includedin the libperf build object.Signed-off-by: Jiri Olsa Tested-by: Sukadev Bhattiprolu Tested-by: Will Deacon Cc: Alexis Berlemont Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-7bxhmeh4bjabqsmxu4gl6p0b@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/arm/util/Build