linux.git/tools/perf/util/genelf.c, branch for-next

perf build: Rename HAVE_DWARF_SUPPORT to HAVE_LIBDW_SUPPORT

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

In Makefile.config for unwinding the name dwarf implies either
libunwind or libdw. Make it clearer that HAVE_DWARF_SUPPORT is really
just defined when libdw is present by renaming to HAVE_LIBDW_SUPPORT.

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/20241017001354.56973-11-irogers@google.com
Signed-off-by: Namhyung Kim

perf genelf: remove unused struct 'options'

2024-06-04T05:07:52+00:00

'options' has been unused since
commit fa7f7e735495 ("perf jit: Move test functionality in to a test").

Remove it.

Signed-off-by: Dr. David Alan Gilbert 
Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim 
Link: https://lore.kernel.org/r/20240602000505.213032-1-linux@treblig.org

perf genelf: Set ELF program header addresses properly

2023-12-14T21:56:34+00:00

The text section starts after the ELF headers so PHDR.p_vaddr and
others should have the correct addresses.

Fixes: babd04386b1df8c3 ("perf jit: Include program header in ELF files")
Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Fangrui Song 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Lieven Hey 
Cc: Milian Wolff 
Cc: Pablo Galindo 
Cc: Peter Zijlstra 
Link: https://lore.kernel.org/r/20231212070547.612536-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf genelf: Fix error code in jit_write_elf()

2022-10-04T11:55:22+00:00

The error code is set to -1 at the beginning of jit_write_elf(), but it is
assigned by jit_add_eh_frame_info() in the middle, hence the following
error can only return the error code of jit_add_eh_frame_info(). Reset
the error code to the default value after being assigned by
jit_add_eh_frame_info().

Fixes: 086f9f3d7897d808 ("perf jit: Generate .eh_frame/.eh_frame_hdr in DSO")
Signed-off-by: Shang XiaoJing 
Cc: Alexander Shishkin 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stefano Sanfilippo 
Link: https://lore.kernel.org/r/20220922141438.22487-2-shangxiaojing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo

perf jit: Include program header in ELF files

2022-09-21T13:30:55+00:00

The missing header makes it hard for programs like elfutils to open
these files.

Fixes: 2d86612aacb7805f ("perf symbol: Correct address for bss symbols")
Reviewed-by: Leo Yan 
Signed-off-by: Lieven Hey 
Tested-by: Leo Yan 
Cc: Leo Yan 
Link: https://lore.kernel.org/r/20220915092910.711036-1-lieven.hey@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo

perf genelf: Switch deprecated openssl MD5_* functions to new EVP API

2022-09-06T12:45:23+00:00

Switch to the flavored EVP API like in test-libcrypto.c, and remove the
bad gcc #pragma.

Inspired-by: 5b245985a6de5ac1 ("tools build: Switch to new openssl API for test-libcrypto")
Signed-off-by: Zixuan Tan 
Cc: Alexander Shishkin 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lore.kernel.org/lkml/CABwm_eTnARC1GwMD-JF176k8WXU1Z0+H190mvXn61yr369qt6g@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO

2022-08-02T19:32:28+00:00

When genelf was introduced it tested for HAVE_LIBCRYPTO not
HAVE_LIBCRYPTO_SUPPORT, which is the define the feature test for openssl
defines, fix it.

This also adds disables the deprecation warning, someone has to fix this
to build with openssl 3.0 before the warning becomes a hard error.

Fixes: 9b07e27f88b9cd78 ("perf inject: Add jitdump mmap injection support")
Reported-by: 谭梓煊 
Cc: Alexei Starovoitov 
Cc: Andrii Nakryiko 
Cc: Daniel Borkmann 
Cc: Jiri Olsa 
Cc: John Fastabend 
Cc: KP Singh 
Cc: Martin KaFai Lau 
Cc: Nick Terrell 
Cc: Song Liu 
Cc: Stephane Eranian 
Link: http://lore.kernel.org/lkml/YulpPqXSOG0Q4J1o@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf jit: Move test functionality in to a test

2019-11-29T15:20:45+00:00

Adds a test for minimal jit_write_elf functionality.

Committer testing:

  # perf test jit
  61: Test jit_write_elf                                    : Ok
  #

  # perf test -v jit
  61: Test jit_write_elf                                    :
  --- start ---
  test child forked, pid 10460
  Writing jit code to: /tmp/perf-test-KqxURR
  test child finished with 0
  ---- end ----
  Test jit_write_elf: Ok
  #

Committer notes:

Fix up the case where HAVE_JITDUMP is no defined.

Signed-off-by: Ian Rogers 
Tested-by: Arnaldo Carvalho de Melo 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Alexios Zavras 
Cc: Allison Randal 
Cc: Florian Fainelli 
Cc: Greg Kroah-Hartman 
Cc: Jiri Olsa 
Cc: Kate Stewart 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Michael Petlan 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Song Liu 
Cc: Stephane Eranian 
Cc: Thomas Gleixner 
Link: http://lore.kernel.org/lkml/20191126235913.41855-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove perf.h from source files not needing it

2019-08-29T20:38:32+00:00

With the movement of lots of stuff out of perf.h to other headers we
ended up not needing it in lots of places, remove it from those places.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-c718m0sxxwp73lp9d8vpihb4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move everything related to sys_perf_event_open() to perf-sys.h

2019-08-29T20:38:32+00:00

And remove unneeded include directives from perf-sys.h to prune the
header dependency tree.

Fixup the fallout in places where definitions were being used without
the needed include directives that were being satisfied because they
were in perf-sys.h.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-7b1zvugiwak4ibfa3j6ott7f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo