From mboxrd@z Thu Jan  1 00:00:00 1970
From: xiakaixu <xiakaixu@huawei.com>
Subject: Does perf support different length of user-space hw_breakpoint?
Date: Mon, 12 May 2014 15:52:54 +0800
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Cc: paulus@samba.org, Ingo Molnar <mingo@kernel.org>, a.p.zijlstra@chello.nl, Arnaldo Carvalho de Melo <acme@kernel.org>, Jiri Olsa <jolsa@redhat.com>, Borislav Petkov <bp@alien8.de>, Namhyung Kim <namhyung@kernel.org>, Huxinwei <huxinwei@huawei.com>, peifeiyue@huawei.com

Hi guys,

Does perf support different length of user-space hw_breakpoint,
such as  HW_BREAKPOINT_LEN_1/HW_BREAKPOINT_LEN_2/HW_BREAKPOINT_LEN_4/
HW_BREAKPOINT_LEN_8?

Seems perf only support HW_BREAKPOINT_LEN_4/sizeof(long)
by default from the source code and simple test.

May I have your opinions if I want to trace different bytes of
hw_breakpoint addr?

Thanks,

Xia Kaixu