perf tools: Auto detecting kernel build directory
authorWang Nan <wangnan0@huawei.com>
Tue, 14 Jul 2015 06:40:02 +0000 (06:40 +0000)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Fri, 7 Aug 2015 13:57:16 +0000 (10:57 -0300)
commitd325d7887b960627dc686d70d07682e18383f9c4
treeb0ac46a5e263ed9e1af09adf7853b6262bcfdc38
parent4cea3a9cb30a962fa759fcb081fb83351113d9c4
perf tools: Auto detecting kernel build directory

This patch detects kernel build directory by checking the existence of
include/generated/autoconf.h.

clang working directory is changed to kbuild directory if it is found,
to help user use relative include path. Following patch will detect
kernel include directory, which contains relative include patch so this
workdir changing is needed.

Users are allowed to set 'kbuild-dir = ""' manually to disable this
checking.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/n/tip-owyfwfbemrjn0tlj6tgk2nf5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/llvm-utils.c