linux-kernel - Re: [PATCH 1/6] perf, x86: Basic Haswell LBR call stack support

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: <50862E02.6020002@intel.com>
Date:	Tue, 23 Oct 2012 13:41:22 +0800
From:	"Yan, Zheng" <zheng.z.yan@...el.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	linux-kernel@...r.kernel.org, eranian@...gle.com,
	ak@...ux.intel.com
Subject: Re: [PATCH 1/6] perf, x86: Basic Haswell LBR call stack support

On 10/22/2012 06:35 PM, Peter Zijlstra wrote:
> On Mon, 2012-10-22 at 14:11 +0800, Yan, Zheng wrote:
>> --- a/include/uapi/linux/perf_event.h
>> +++ b/include/uapi/linux/perf_event.h
>> @@ -160,8 +160,9 @@ enum perf_branch_sample_type {
>>         PERF_SAMPLE_BRANCH_ABORT        = 1U << 7, /* transaction aborts */
>>         PERF_SAMPLE_BRANCH_INTX         = 1U << 8, /* in transaction (flag) */
>>         PERF_SAMPLE_BRANCH_NOTX         = 1U << 9, /* not in transaction (flag) */
>> +       PERF_SAMPLE_BRANCH_CALL_STACK   = 1U << 10, /* call stack */
>>  
>> -       PERF_SAMPLE_BRANCH_MAX          = 1U << 10, /* non-ABI */
>> +       PERF_SAMPLE_BRANCH_MAX          = 1U << 11, /* non-ABI */
>>  }; 
> 
> You add an ABI sample type without mentioning it in your changelog.. I
> think I'll stop reading here.
> 
Ok, I will add the ABI change to the change log. Do you think we should hide this
branch sample type from user?

Regards
Yan, Zheng 
--
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/