Changes in Build

a90c4519 - perf riscv: Remove dwarf-regs.c and add dwarf-regs-table.h

Fri, 08 Nov 2024 23:45:59 +0000

perf riscv: Remove dwarf-regs.c and add dwarf-regs-table.hThe file just provides the function get_arch_regstr, however, if inthe only caller get_dwarf_regstr EM_HOST is used for the EM_NONE case,and the register table is provided in a header file, the function cannever be called. So remove as dead code. Tidy up the EM_NONE cases forriscv in dwarf-regs.c.Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Ian Rogers Acked-by: Palmer Dabbelt 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/20241108234606.429459-15-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/arch/riscv/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/riscv/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/riscv/util/Build

da7b1b52 - perf kvm/riscv: Port perf kvm stat to RISC-V

Mon, 22 Apr 2024 08:08:33 +0000

perf kvm/riscv: Port perf kvm stat to RISC-V'perf kvm stat report/record' generates a statistical analysis of KVMevents and can be used to analyze guest exit reasons."report" reports statistical analysis of guest exit events.To record kvm events on the host: # perf kvm stat record -aTo report kvm VM EXIT events: # perf kvm stat report --event=vmexitSigned-off-by: Shenlin Liang Reviewed-by: Atish Patra Tested-by: Atish Patra Link: https://lore.kernel.org/r/20240422080833.8745-3-liangshenlin@eswincomputing.comSigned-off-by: Anup Patel List of files: /linux-6.15/tools/perf/arch/riscv/util/Build

25c2e591 - perf tools riscv: Add support for get_cpuid_str function

Mon, 15 Aug 2022 13:22:38 +0000

perf tools riscv: Add support for get_cpuid_str functionThe get_cpuid_str function returns the string that contains values ofMVENDORID, MARCHID and MIMPID in hex format separated by coma.The values themselves are taken from first cpu entry in "/proc/cpuid"that contains "mvendorid", "marchid" and "mimpid".Signed-off-by: Nikita Shubin Tested-by: Kautuk Consul Acked-by: Palmer Dabbelt Cc: Albert Ou Cc: Alexander Shishkin Cc: Anup Patel Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: linux-riscv@lists.infradead.orgCc: linux@yadro.comLink: https://lore.kernel.org/r/20220815132251.25702-2-nikita.shubin@maquefel.meSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/riscv/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/riscv/util/Build

51bc620b - riscv: Add support for libdw

Thu, 05 Sep 2019 03:46:36 +0000

riscv: Add support for libdwThis patch adds support for DWARF register mappings and libdw registersinitialization, which is used by perf callchain analyzing when--call-graph=dwarf is given.Signed-off-by: Mao Han Cc: Paul Walmsley Cc: Greentime Hu Cc: Palmer Dabbelt Cc: linux-riscv Cc: Christoph Hellwig Cc: Guo Ren Tested-by: Greentime Hu Signed-off-by: Paul Walmsley List of files: /linux-6.15/tools/perf/arch/riscv/util/Build