linux-kernel - [PATCH 0 of 4] Xen spinlock updates and performance measurements

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Message-Id: <patchbomb.1219276937@localhost>
Date:	Wed, 20 Aug 2008 17:02:17 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	Jan Beulich <jbeulich@...ell.com>
Subject: [PATCH 0 of 4] Xen spinlock updates and performance measurements

Hi Ingo,

This series has some updates to Xen's spinlock implementation,
including adding a set of performance measurements in debugfs.

The series consists of:
 - correctly deal with a spinlock in an interrupt handler interrupting
   another spinlock spinning on a lock. [2.6.27 bugfix]
 - Add Xen debugfs support, including performance metrics for
   spinlocks, multicalls and mmu operations.
 - Allow interrupts to be enabled while spinning (blocking) for a lock
 - Measure time spinlocks spend blocked

Thanks,
	J

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