perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support
authorHe Kuang <hekuang@huawei.com>
Fri, 6 May 2016 08:59:07 +0000 (08:59 +0000)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 9 May 2016 16:29:36 +0000 (13:29 -0300)
commit841e3558b2de6d8c53dae4f01c7a81cd53e42e5c
tree0c9057d0516cf40e24bfa6e9eb8831668f6818df
parentea7c28518943b26a85d73cd76acd03b71962cb18
perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support

There is no need to check for DWARF unwinding support when using the
'dwarf' callchain record method, as this will only ask the kernel to
collect stack dumps for later DWARF CFI processing, which can be done in
another machine, where the support for DWARF unwinding need to be
present.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1462525154-125656-2-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/util.c