From: Matt Fleming <matt@codeblueprint.co.uk>
To: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Cc: dsahern@gmail.com, namhyung@kernel.org, mingo@kernel.org,
peterz@infradead.org, brgerst@gmail.com, bp@alien8.de,
dvlasenk@redhat.com, vincent.weaver@maine.edu,
torvalds@linux-foundation.org, eranian@google.com,
tony.luck@intel.com, tglx@linutronix.de,
alexander.shishkin@linux.intel.com, linux-kernel@vger.kernel.org,
luto@amacapital.net, hpa@zytor.com, jolsa@redhat.com,
acme@redhat.com, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:perf/urgent] perf/x86/mbm: Implement RMID recycling
Date: Wed, 23 Mar 2016 20:59:06 +0000 [thread overview]
Message-ID: <20160323205906.GI11676@codeblueprint.co.uk> (raw)
In-Reply-To: <alpine.DEB.2.10.1603211116410.25124@vshiva-Udesk>
On Mon, 21 Mar, at 11:27:55AM, Vikas Shivappa wrote:
>
> The init_mbm_sample calls the update_sample to read the MSR in IPI .. Since
> the count is also in IPI , they should not trash each other ?
>
> Basically all the MSR read/writes are in high irql , except for the mbm
> overflow timer and read calls which holds an irqsave spinlock.
Good point! This should be fine.
next prev parent reply other threads:[~2016-03-23 20:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 23:32 [PATCH V6 0/6] Intel memory b/w monitoring support Vikas Shivappa
2016-03-10 23:32 ` [PATCH 1/6] x86/perf/intel/cqm: Fix cqm handling of grouping events into a cache_group Vikas Shivappa
2016-03-21 9:51 ` [tip:perf/urgent] perf/x86/cqm: Fix CQM " tip-bot for Vikas Shivappa
2016-03-21 14:57 ` Matt Fleming
2016-03-21 18:14 ` Vikas Shivappa
2016-03-23 20:14 ` Matt Fleming
2016-03-23 22:49 ` Vikas Shivappa
2016-03-10 23:32 ` [PATCH 2/6] x86/perf/intel/cqm: Fix cqm memory leak and notifier leak Vikas Shivappa
2016-03-21 9:51 ` [tip:perf/urgent] perf/x86/cqm: Fix CQM " tip-bot for Vikas Shivappa
2016-03-10 23:32 ` [PATCH 3/6] x86/mbm: Intel Memory B/W Monitoring enumeration and init Vikas Shivappa
2016-03-21 9:52 ` [tip:perf/urgent] perf/x86/mbm: Add " tip-bot for Vikas Shivappa
2016-03-10 23:32 ` [PATCH 4/6] x86/mbm: Memory bandwidth monitoring event management Vikas Shivappa
2016-03-11 19:26 ` Tony Luck
2016-03-21 9:52 ` [tip:perf/urgent] perf/x86/mbm: Add memory " tip-bot for Tony Luck
2016-03-10 23:32 ` [PATCH 5/6] x86/mbm: RMID Recycling MBM changes Vikas Shivappa
2016-03-21 9:53 ` [tip:perf/urgent] perf/x86/mbm: Implement RMID recycling tip-bot for Vikas Shivappa
2016-03-21 15:09 ` Matt Fleming
2016-03-21 18:27 ` Vikas Shivappa
2016-03-23 20:59 ` Matt Fleming [this message]
2016-03-10 23:32 ` [PATCH 6/6] x86/mbm: Add support for MBM counter overflow handling Vikas Shivappa
2016-03-11 19:26 ` Tony Luck
2016-03-21 9:53 ` [tip:perf/urgent] perf/x86/mbm: " tip-bot for Vikas Shivappa
2016-03-11 22:54 ` [PATCH V6 0/6] Intel memory b/w monitoring support Peter Zijlstra
2016-03-11 23:22 ` Vikas Shivappa
2016-03-11 23:25 ` Vikas Shivappa
2016-03-11 23:45 ` Luck, Tony
2016-03-12 1:56 ` Luck, Tony
2016-03-12 7:53 ` Peter Zijlstra
2016-03-12 16:14 ` Luck, Tony
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