From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Sat, 25 Jun 2005 21:57:30 +0000 (-0700)
Subject: [PATCH] sched: relax pinned balancing
X-Git-Tag: v2.6.13-rc1~68^2~139
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77391d71681d05d2f4502f91ad62618522abf624;p=pandora-kernel.git

[PATCH] sched: relax pinned balancing

The maximum rebalance interval allowed by the multiprocessor balancing
backoff is often not large enough to handle corner cases where there are
lots of tasks pinned on a CPU.  Suresh reported:

	I see system livelock's if for example I have 7000 processes
	pinned onto one cpu (this is on the fastest 8-way system I
	have access to).

After this patch, the machine is reported to go well above this number.

Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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