Changes in Build

d4a0c4f2 - perf dwarf-regs: Move csky dwarf-regs out of arch

Fri, 08 Nov 2024 23:45:55 +0000

perf dwarf-regs: Move csky dwarf-regs out of archMove arch/csky/util/dwarf-regs.c to util/dwarf-regs-csky.c and compilein unconditionally. To avoid get_arch_regstr being duplicated, renameto get_csky_regstr and add to get_dwarf_regstr switch.Update #ifdefs to allow ABI V1 and V2 tables at the sametime. Determine the table from the ELF flags.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/20241108234606.429459-11-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/arch/csky/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/csky/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/csky/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/csky/util/Build

b399ec21 - csky: Add support for libdw

Sun, 21 Apr 2019 15:33:14 +0000

csky: Add support for libdwThis patch add support for DWARF register mappings and libdw registersinitialization, 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.htmlSigned-off-by: Mao Han Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Jiri Olsa Cc: linux-arch@vger.kernel.orgCc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1555860794-10572-1-git-send-email-guoren@kernel.orgSigned-off-by: Guo Ren Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/arch/csky/util/Build

3213486f - csky: Add support for perf unwind-libdw

Mon, 15 Apr 2019 09:17:30 +0000

csky: Add support for perf unwind-libdwThis patch add support for DWARF register mappings and libdw registersinitialization, which is used by perf callchain analyzing, eg:perf record --call-graph=dwarf Here is elfutils csky backend patch set:https://sourceware.org/ml/elfutils-devel/2019-q2/msg00007.htmlSigned-off-by: Mao Han Signed-off-by: Guo Ren Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: Arnd Bergmann List of files: /linux-6.15/tools/perf/arch/csky/util/Build