uml: speed up exec

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flush_thread doesn't need to do a full page table walk in order to clear the
address space.  It knows what the end result needs to be, so it can call unmap
directly.

This results in a 10-20% speedup in an exec from bash.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Jeff Dike 2007-05-06 14:51:19 -07:00 • committed by Linus Torvalds

parent 57ac895a7f

commit a18ff1bde0

1 changed files with 11 additions and 1 deletions

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arch/um/kernel/skas/exec.c

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