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authorWang Nan <wangnan0@huawei.com>2016-05-23 07:13:41 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-05-23 18:22:48 -0300
commit3a62a7b8200a177ad96161e4f2678514e6ee301e (patch)
treeb990cb212929775c1dc926ebc992dee6bbe7c03f /arch/arc
parent09fa4f401296f555afb6f2f4282717644d94722e (diff)
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perf record: Read from backward ring buffer
Introduce rb_find_range() to find start and end position from a backward ring buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1463987628-163563-5-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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