Commits
Russell King committed dca778c5bbf
ARM: avoid saving and restoring registers unnecessarily Avoid repeatedly saving and restoring registers around the calls to trace_hardirqs_on() and context_tracking_user_exit(). With the previous changes, we no longer need to preserve "lr" across these calls, and if we re-load r0-r3 later, we can avoid preserving these regsiters too. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>