linux-kernel - Re: [RFC PATCH v2] perf test: Improve bp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160105100708.GA29394@krava.brq.redhat.com>
Date:	Tue, 5 Jan 2016 11:07:08 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	will.deacon@....com, jolsa@...nel.org, takahiro.akashi@...aro.org,
	guohanjun@...wei.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, fengguang.wu@...el.com,
	pi3orama@....com, Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [RFC PATCH v2] perf test: Improve bp_signal

On Tue, Jan 05, 2016 at 09:57:55AM +0000, Wang Nan wrote:
> Will Deacon [1] has some question on patch [2]. This patch improves
> test__bp_signal so we can test:
> 
>  1. A watchpoint and a breakpoint that fire on the same instruction
>  2. Nested signals
> 
> Test result:
> 
>  On x86_64 and ARM64 (result are similar with patch [2] on ARM64):
> 
>  # ./perf test -v signal
>  17: Test breakpoint overflow signal handler                  :
>  --- start ---
>  test child forked, pid 10213
>  count1 1, count2 3, count3 2, overflow 3, overflows_2 3
>  test child finished with 0
>  ---- end ----
>  Test breakpoint overflow signal handler: Ok
> 
> So at least 2 cases Will doubted are handled correctly.
> 
> [1] http://lkml.kernel.org/g/20160104165535.GI1616@arm.com
> [2] http://lkml.kernel.org/g/1450921362-198371-1-git-send-email-wangnan0@huawei.com
> 
> Signed-off-by: Wang Nan <wangnan0@...wei.com>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> ---
> 
> v1 -> v2: Improve readability, fix typo. Thanks to Jiri Olsa.
> 
> To Jiri: I guess you will be okay to provide your SOB for your code at [3],
>          so I add it in this v2 patch.

sure, patch looks good to me

thanks,
jirka
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/