perf mmap: Store mmap scope in struct perf_mmap()
authorKan Liang <kan.liang@linux.intel.com>
Tue, 6 Mar 2018 15:36:01 +0000 (10:36 -0500)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 8 Mar 2018 13:05:50 +0000 (10:05 -0300)
commit4fda3459e3c2e5ca35d304646aeeb811242537b2
tree597261427282b6cb14b87841cdd43d5590ea6191
parent2c5f6d876b4edda8740f5a2826cf9b1a67fa76fb
perf mmap: Store mmap scope in struct perf_mmap()

There is too much boilerplate in the perf_mmap__read*() interfaces.

The 'start' and 'end' variables should be stored in struct perf_mmap at
initialization. They will be used later.

The old 'startp' and 'endp' pointers are used by perf_mmap__read_event()
now.  They cannot be removed. So the old 'startp/endp' and new
'md->start/md->end' will exist simultaneously now.  The old one will be
removed later.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1520350567-80082-2-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/mmap.c
tools/perf/util/mmap.h