From: xiakaixu <xiakaixu@huawei.com>
To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
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
Subject: Does perf support different length of user-space hw_breakpoint?
Date: Mon, 12 May 2014 15:52:54 +0800 [thread overview]
Message-ID: <53707DD6.2000108@huawei.com> (raw)
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
WARNING: multiple messages have this Message-ID (diff)
From: xiakaixu <xiakaixu@huawei.com>
To: <linux-kernel@vger.kernel.org>, <linux-perf-users@vger.kernel.org>
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>
Subject: Does perf support different length of user-space hw_breakpoint?
Date: Mon, 12 May 2014 15:52:54 +0800 [thread overview]
Message-ID: <53707DD6.2000108@huawei.com> (raw)
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
next reply other threads:[~2014-05-12 7:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-12 7:52 xiakaixu [this message]
2014-05-12 7:52 ` Does perf support different length of user-space hw_breakpoint? xiakaixu
2014-05-12 8:05 ` Peter Zijlstra
[not found] ` <CAGjdHukwC3cu3YOSSteXsC4_52m-YTdAAYCfXV+q5A2pnW+CKQ@mail.gmail.com>
2014-05-12 8:48 ` Peter Zijlstra
2014-05-12 9:00 ` xiakaixu
2014-05-12 9:00 ` xiakaixu
2014-05-13 11:38 ` xiakaixu
2014-05-13 11:38 ` xiakaixu
2014-05-13 12:00 ` Jiri Olsa
2014-05-13 15:06 ` Frederic Weisbecker
2014-05-14 2:55 ` xiakaixu
2014-05-14 2:55 ` xiakaixu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53707DD6.2000108@huawei.com \
--to=xiakaixu@huawei.com \
--cc=a.p.zijlstra@chello.nl \
--cc=acme@kernel.org \
--cc=bp@alien8.de \
--cc=huxinwei@huawei.com \
--cc=jolsa@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
--cc=paulus@samba.org \
--cc=peifeiyue@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.