From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Mon, 10 Mar 2008 22:28:05 +0000 (-0700)
Subject: x86, fpu: lazy allocation of FPU area - v5
X-Git-Tag: v2.6.26-rc1~1133^2~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aa283f49276e7d840a40fb01eee6de97eaa7e012;p=pandora-kernel.git

x86, fpu: lazy allocation of FPU area - v5

Only allocate the FPU area when the application actually uses FPU, i.e., in the
first lazy FPU trap. This could save memory for non-fpu using apps.

for example: on my system after boot, there are around 300 processes, with
only 17 using FPU.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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