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H A Dentry-header.Sdiff 195b58add463f697fb802ed55e26759094d40a54 Thu Aug 28 14:08:14 CEST 2014 Russell King <rmk+kernel@arm.linux.org.uk> ARM: Avoid writing to control register on every exception

If we are not changing the control register value, avoid writing to it.
Writes to the control register can be very expensive, taking around a
hundred cycles or so.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
H A Dentry-common.Sdiff 195b58add463f697fb802ed55e26759094d40a54 Thu Aug 28 14:08:14 CEST 2014 Russell King <rmk+kernel@arm.linux.org.uk> ARM: Avoid writing to control register on every exception

If we are not changing the control register value, avoid writing to it.
Writes to the control register can be very expensive, taking around a
hundred cycles or so.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
H A Dentry-armv.Sdiff 195b58add463f697fb802ed55e26759094d40a54 Thu Aug 28 14:08:14 CEST 2014 Russell King <rmk+kernel@arm.linux.org.uk> ARM: Avoid writing to control register on every exception

If we are not changing the control register value, avoid writing to it.
Writes to the control register can be very expensive, taking around a
hundred cycles or so.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>