From: Vikas Shivappa <vikas.shivappa@intel.com>
To: Paul Bolle <pebolle@tiscali.nl>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>,
linux-kernel@vger.kernel.org, vikas.shivappa@intel.com,
hpa@zytor.com, tglx@linutronix.de, mingo@kernel.org,
tj@kernel.org, peterz@infradead.org,
Matt Fleming <matt.fleming@intel.com>,
"Auld, Will" <will.auld@intel.com>
Subject: Re: [PATCH 1/6] x86/intel_cat: Intel Cache Allocation Technology detection
Date: Wed, 28 Jan 2015 15:17:03 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.10.1501281510190.3500@vshiva-Udesk> (raw)
In-Reply-To: <1422483088.3621.56.camel@x220>
On Wed, 28 Jan 2015, Paul Bolle wrote:
> Trivial nit below.
>
> On Tue, 2015-01-27 at 16:00 -0800, Vikas Shivappa wrote:
>> This patch adds support for the new Cache Allocation Technology (CAT)
>> feature found in future Intel Xeon processors. It includes CPUID
>> enumeration routines for CAT and new values to track CAT resources to
>> the cpuinfo_x86 structure.
>>
>> Cache Allocation Technology(CAT) provides a way for the Software
>> (OS/VMM) to restrict cache allocation to a defined 'subset' of cache
>> which may be overlapping with other 'subsets'. This feature is used
>> when allocating a line in cache ie when pulling new data into the cache.
>> The programming of the h/w is done via programming MSRs.
>>
>> More information about CAT be found in the Intel (R) x86 Architecture
>> Software Developer Manual, section 17.15.
>>
>> Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
>
> [...]
>
>> diff --git a/init/Kconfig b/init/Kconfig
>> index 9afb971..475b7b7 100644
>> --- a/init/Kconfig
>> +++ b/init/Kconfig
>> @@ -961,6 +961,17 @@ config CPUSETS
>>
>> Say N if unsure.
>>
>> +config CGROUP_CAT
>> + bool "Cache Allocation Technology cgroup subsystem"
>> + depends on X86_64
>
> Odd indentation. Just make it a tab (as I suppose the indentation of
> "help" already is).
ok , Will fix. Wish the checkpatch.pl caught that :)
Thanks,
Vikas
>
>> + help
>> + This option provides framework to allocate cache lines when
>> + applications fill cache.
>> + This can be used by users to configure how much cache that can be
>> + allocated to different PIDs.
>> +
>> + Say N if unsure.
>> +
>> config PROC_PID_CPUSET
>> bool "Include legacy /proc/<pid>/cpuset file"
>> depends on CPUSETS
>
>
> Paul Bolle
>
>
next prev parent reply other threads:[~2015-01-29 1:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-28 0:00 [PATCH V3 0/6] x86: Intel Cache Allocation Support Vikas Shivappa
2015-01-28 0:00 ` [PATCH 1/6] x86/intel_cat: Intel Cache Allocation Technology detection Vikas Shivappa
2015-01-28 22:11 ` Paul Bolle
2015-01-28 23:17 ` Vikas Shivappa [this message]
2015-02-09 19:50 ` [PATCH 1/6] x86/intel_cat: Intel Cache Allocation Technology Vikas Shivappa
2015-02-03 10:57 ` [PATCH 1/6] x86/intel_cat: Intel Cache Allocation Technology detection Matt Fleming
2015-01-28 0:00 ` [PATCH 2/6] x86/intel_cat: Adds support for Class of service management Vikas Shivappa
2015-01-28 0:00 ` [PATCH 3/6] x86/intel_cat: Support cache bit mask for Intel CAT Vikas Shivappa
2015-01-28 0:00 ` [PATCH 4/6] x86/intel_cat: Implement scheduling support " Vikas Shivappa
2015-01-28 0:00 ` [PATCH 5/6] x86/intel_rdt: Software Cache for IA32_PQR_MSR Vikas Shivappa
2015-01-28 0:00 ` [PATCH 6/6] x86/intel_cat: Intel haswell CAT enumeration Vikas Shivappa
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=alpine.DEB.2.10.1501281510190.3500@vshiva-Udesk \
--to=vikas.shivappa@intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=matt.fleming@intel.com \
--cc=mingo@kernel.org \
--cc=pebolle@tiscali.nl \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=tj@kernel.org \
--cc=vikas.shivappa@linux.intel.com \
--cc=will.auld@intel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).