perf probe: Support probing on offline cross-arch binary
authorMasami Hiramatsu <mhiramat@kernel.org>
Thu, 25 Aug 2016 16:24:57 +0000 (01:24 +0900)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 1 Sep 2016 15:41:09 +0000 (12:41 -0300)
commit293d5b43948309434568f4dcbb36cce4c3c51bd5
tree447e6c1434553309ce9e727ef07ea30197321783
parent428aff82e92a29da0e4276623180f9a98f2d5b16
perf probe: Support probing on offline cross-arch binary

Support probing on offline cross-architecture binary by adding getting
the target machine arch from ELF and choose correct register string for
the machine.

Here is an example:
  -----
  $ perf probe --vmlinux=./vmlinux-arm --definition 'do_sys_open $params'
  p:probe/do_sys_open do_sys_open+0 dfd=%r5:s32 filename=%r1:u32 flags=%r6:s32 mode=%r3:u16
  -----

Here, we can get probe/do_sys_open from above and append it to to the target
machine's tracing/kprobe_events file in the tracefs mountput, usually
/sys/kernel/debug/tracing/kprobe_events (or /sys/kernel/tracing/kprobe_events).

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/147214229717.23638.6440579792548044658.stgit@devbox
[ Add definition for EM_AARCH64 to fix the build on at least centos 6, debian 7 & ubuntu 12.04.5 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 files changed:
tools/perf/arch/arm/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/arm64/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/powerpc/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/s390/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/sh/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/sparc/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/x86/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/arch/xtensa/include/dwarf-regs-table.h [new file with mode: 0644]
tools/perf/util/Build
tools/perf/util/dwarf-regs.c [new file with mode: 0644]
tools/perf/util/include/dwarf-regs.h
tools/perf/util/probe-finder.c
tools/perf/util/probe-finder.h