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perf augmented_raw_syscalls: Copy 'access' arg as well
authorArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 17 Dec 2018 14:59:35 +0000 (11:59 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Tue, 18 Dec 2018 19:15:18 +0000 (16:15 -0300)
commitc48ee107bb387f76b089e0c30e1fed26e8d921f0
tree983c240862167890d713d550b81dced675fad552
parent4b8a240ed5e0a4e6b53c994ddfcff86a06879a66
perf augmented_raw_syscalls: Copy 'access' arg as well

This will all come from userspace, but to test the changes to make 'perf
trace' output similar to strace's, do this one more now manually.

To update the precompiled augmented_raw_syscalls.o binary I just run:

  # perf record -e ~acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.c sleep 1
  LLVM: dumping /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.022 MB perf.data ]
  #

Because to have augmented_raw_syscalls to be always used and a fast
startup and remove the need to have the llvm toolchain installed, I'm
using:

  # perf config | grep add_events
  trace.add_events=/home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
  #

So when doing changes to augmented_raw_syscals.c one needs to rebuild
the .o file.

This will be done automagically later, i.e. have a 'make' behaviour of
recompiling when the .c gets changed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-lw3i2atyq8549fpqwmszn3qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/examples/bpf/augmented_raw_syscalls.c