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uml: speed up exec
authorJeff Dike <jdike@addtoit.com>
Sun, 6 May 2007 21:51:19 +0000 (14:51 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Mon, 7 May 2007 19:13:02 +0000 (12:13 -0700)
commita18ff1bde0c3da9ece3ba60e6eae2ef87f91a12e
tree4a822b5150773dd979f723232ed2d7169214d9bdtree | snapshot
parent57ac895a7f22d235f637317f58a2d9ba6ec91a27commit | diff
uml: speed up exec

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>
arch/um/kernel/skas/exec.c diff | blob | history
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