linux.git/tools/perf/arch/csky, branch for-next

perf build: Remove PERF_HAVE_DWARF_REGS

2024-11-09T16:39:14+00:00

PERF_HAVE_DWARF_REGS was true when an architecture had a dwarf-regs.c
file. There are no more architecture dwarf-regs.c files, selection is
done using constants from the ELF file rather than conditional
compilation. When removing PERF_HAVE_DWARF_REGS was the only variable
in the Makefile, remove the Makefile.

Add missing SPDX for RISC-V Makefile.

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.org
Cc: linux-riscv@lists.infradead.org
Cc: Bibo Mao 
Cc: John Garry 
Cc: Atish Patra 
Cc: Dima Kogan 
Cc: Paul Walmsley 
Cc: Dr. David Alan Gilbert 
Cc: linux-csky@vger.kernel.org
Link: https://lore.kernel.org/r/20241108234606.429459-21-irogers@google.com
Signed-off-by: Namhyung Kim

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

2024-11-09T16:39:13+00:00

Move arch/csky/util/dwarf-regs.c to util/dwarf-regs-csky.c and compile
in unconditionally. To avoid get_arch_regstr being duplicated, rename
to get_csky_regstr and add to get_dwarf_regstr switch.

Update #ifdefs to allow ABI V1 and V2 tables at the same
time. 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.org
Cc: linux-riscv@lists.infradead.org
Cc: Bibo Mao 
Cc: John Garry 
Cc: Atish Patra 
Cc: Dima Kogan 
Cc: Paul Walmsley 
Cc: Dr. David Alan Gilbert 
Cc: linux-csky@vger.kernel.org
Link: https://lore.kernel.org/r/20241108234606.429459-11-irogers@google.com
Signed-off-by: Namhyung Kim

perf disasm: Add e_machine/e_flags to struct arch

2024-11-09T16:39:13+00:00

Currently functions like get_dwarf_regnum only work with the host
architecture. Carry the elf machine and flags in struct arch so that
in disassembly these can be used to allow cross platform disassembly.

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.org
Cc: linux-riscv@lists.infradead.org
Cc: Bibo Mao 
Cc: John Garry 
Cc: Atish Patra 
Cc: Dima Kogan 
Cc: Paul Walmsley 
Cc: Dr. David Alan Gilbert 
Cc: linux-csky@vger.kernel.org
Link: https://lore.kernel.org/r/20241108234606.429459-5-irogers@google.com
Signed-off-by: Namhyung Kim

perf build: Rename CONFIG_DWARF to CONFIG_LIBDW

2024-10-18T17:17:40+00:00

In Makefile.config for unwinding the name dwarf implies either
libunwind or libdw. Make it clearer that CONFIG_DWARF is really just
defined 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.org
Cc: linux-riscv@lists.infradead.org
Cc: Bibo Mao 
Cc: John Garry 
Cc: Atish Patra 
Cc: Dima Kogan 
Cc: Paul Walmsley 
Cc: Dr. David Alan Gilbert 
Cc: linux-csky@vger.kernel.org
Link: https://lore.kernel.org/r/20241017001354.56973-12-irogers@google.com
Signed-off-by: Namhyung Kim

perf build: Rename NO_DWARF to NO_LIBDW

2024-10-18T17:17:40+00:00

NO_DWARF could mean more than NO_LIBDW support, in particular no
libunwind support. Rename to be more intention revealing.

Signed-off-by: Ian Rogers 
Reviewed-by: Masami Hiramatsu (Google) 
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: 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.org
Cc: linux-riscv@lists.infradead.org
Cc: Bibo Mao 
Cc: John Garry 
Cc: Atish Patra 
Cc: Dima Kogan 
Cc: Paul Walmsley 
Cc: Dr. David Alan Gilbert 
Cc: linux-csky@vger.kernel.org
Link: https://lore.kernel.org/r/20241017001354.56973-3-irogers@google.com
Signed-off-by: Namhyung Kim

perf util: Make util its own library

2024-06-26T18:07:42+00:00

Make the util directory into its own library. This is done to avoid
compiling code twice, once for the perf tool and once for the perf
python module. For convenience:
  arch/common.c
  scripts/perl/Perf-Trace-Util/Context.c
  scripts/python/Perf-Trace-Util/Context.c
are 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

perf parse-regs: Introduce a weak function arch__sample_reg_masks()

2024-02-15T21:48:36+00:00

Every architecture can provide a register list for sampling. If an
architecture doesn't support register sampling, it won't define the data
structure 'sample_reg_masks'. Consequently, any code using this
structure must be protected by the macro 'HAVE_PERF_REGS_SUPPORT'.

This patch defines a weak function, arch__sample_reg_masks(), which will
be replaced by an architecture-defined function for returning the
architecture's register list. With this refactoring, the function always
exists, the condition checking for 'HAVE_PERF_REGS_SUPPORT' is not
needed anymore, so remove it.

Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Cc: James Clark 
Cc: Palmer Dabbelt 
Cc: Albert Ou 
Cc: Huacai Chen 
Cc: Guo Ren 
Cc: Will Deacon 
Cc: Mike Leach 
Cc: Kan Liang 
Cc: Ming Wang 
Cc: John Garry 
Cc: Paul Walmsley 
Cc: linux-csky@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Signed-off-by: Namhyung Kim 
Link: https://lore.kernel.org/r/20240214113947.240957-4-leo.yan@linux.dev

perf parse-regs: Move out arch specific header from util/perf_regs.h

2023-08-16T11:52:45+00:00

util/perf_regs.h includes another perf_regs.h:

  #include 

Here it includes architecture specific header, for example, if we build
arm64 target, the header tools/perf/arch/arm64/include/perf_regs.h is
included.

We use this implicit way to include architecture specific header, which
is not directive; furthermore, util/perf_regs.c is coupled with the
architecture specific definitions.

This patch moves out arch specific header from util/perf_regs.h for
generalizing the 'util' folder, as a result, the source files in 'arch'
folder explicitly include architecture's perf_regs.h.

Signed-off-by: Leo Yan 
Acked-by: Ian Rogers 
Cc: Adrian Hunter 
Cc: Albert Ou 
Cc: Alexander Shishkin 
Cc: Eric Lin 
Cc: Fangrui Song 
Cc: Guo Ren 
Cc: Huacai Chen 
Cc: Ingo Molnar 
Cc: Ivan Babrou 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Ming Wang 
Cc: Namhyung Kim 
Cc: Palmer Dabbelt 
Cc: Paul Walmsley 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Will Deacon 
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/20230606014559.21783-7-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo

perf parse-regs: Remove PERF_REGS_{MAX|MASK} from common code

2023-08-16T11:49:10+00:00

The macros PERF_REGS_MAX and PERF_REGS_MASK are architecture specific,
let's remove them from the common file util/perf_regs.c.

As a side effect, the weak functions arch__intr_reg_mask() and
arch__user_reg_mask() just return zeros, every arch defines its own
functions in the 'arch' folder for returning right values.

Note, we don't need to return intr/user register masks dynamically, this
is because these two functions are invoked during recording phase but
not decoding phase, they are always invoked on the native environment,
thus we don't need to parse them dynamically.

Signed-off-by: Leo Yan 
Acked-by: Ian Rogers 
Cc: Adrian Hunter 
Cc: Albert Ou 
Cc: Alexander Shishkin 
Cc: Eric Lin 
Cc: Fangrui Song 
Cc: Guo Ren 
Cc: Huacai Chen 
Cc: Ingo Molnar 
Cc: Ivan Babrou 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Ming Wang 
Cc: Namhyung Kim 
Cc: Palmer Dabbelt 
Cc: Paul Walmsley 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Will Deacon 
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/20230606014559.21783-6-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo

perf parse-regs: Remove unused macros PERF_REG_{IP|SP}

2023-08-16T11:48:06+00:00

The macros PERF_REG_{IP|SP} have been replaced by using functions
perf_arch_reg_{ip|sp}(), remove them!

Signed-off-by: Leo Yan 
Acked-by: Ian Rogers 
Cc: Adrian Hunter 
Cc: Albert Ou 
Cc: Alexander Shishkin 
Cc: Eric Lin 
Cc: Fangrui Song 
Cc: Guo Ren 
Cc: Huacai Chen 
Cc: Ingo Molnar 
Cc: Ivan Babrou 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Mike Leach 
Cc: Ming Wang 
Cc: Namhyung Kim 
Cc: Palmer Dabbelt 
Cc: Paul Walmsley 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Will Deacon 
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/20230606014559.21783-5-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo