diff options
| author | Wang Nan <wangnan0@huawei.com> | 2015-09-14 23:02:49 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-09-15 09:48:33 -0300 |
| commit | 63ab024a5b6f295ca17a293ad81b7c728f49a89a (patch) | |
| tree | 04460e9beb6d2a6bcbe7c576988661d42846129e /tools/perf/config/Makefile | |
| parent | 196581717d85f59365dc9303685cd5b1cdf106a3 (diff) | |
| download | lwn-63ab024a5b6f295ca17a293ad81b7c728f49a89a.tar.gz lwn-63ab024a5b6f295ca17a293ad81b7c728f49a89a.zip | |
perf tools: regs_query_register_offset() infrastructure
regs_query_register_offset() is a helper function which converts
register name like "%rax" to offset of a register in 'struct pt_regs',
which is required by BPF prologue generator.
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET indicates an architecture
supports converting name of a register to its offset in 'struct
pt_regs'.
HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET is introduced as the corresponding
CFLAGS of PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: 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: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1441523623-152703-19-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
[ Extracted from eBPF patches ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/config/Makefile')
| -rw-r--r-- | tools/perf/config/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 827557fc7511..0435ac41cea9 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -109,6 +109,10 @@ endif # include ARCH specific config -include $(src-perf)/arch/$(ARCH)/Makefile +ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET + CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET +endif + include $(src-perf)/config/utilities.mak ifeq ($(call get-executable,$(FLEX)),) |