kernel_optimize_test/arch/um/sys-i386
Paolo 'Blaisorblade' Giarrusso 10fa1155a2 [PATCH] uml: fix unreasonably long udelay
Currently we have a confused udelay implementation.

* __const_udelay does not accept usecs but xloops in i386 and x86_64
* our implementation requires usecs as arg
* it gets a xloops count when called by asm/arch/delay.h

Bugs related to this (extremely long shutdown times) where reported by some
x86_64 users, especially using Device Mapper.

To hit this bug, a compile-time constant time parameter must be passed -
that's why UML seems to work most times.  Fix this with a simple udelay
implementation.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-02 10:06:08 -07:00
..
bug.c [PATCH] UML: add generic BUG support 2006-12-08 08:28:39 -08:00
bugs.c [PATCH] uml: Use ARRAY_SIZE more assiduously 2006-09-26 08:49:05 -07:00
checksum.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
delay.c [PATCH] uml: fix unreasonably long udelay 2007-04-02 10:06:08 -07:00
fault.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ksyms.c [PATCH] uml: fix some double export warnings 2006-04-11 06:18:36 -07:00
ldt.c [PATCH] uml: fix compilation problems 2007-03-29 08:22:25 -07:00
Makefile [PATCH] UML: add generic BUG support 2006-12-08 08:28:39 -08:00
ptrace_user.c [PATCH] uml: include stddef.h correctly 2006-12-07 08:39:29 -08:00
ptrace.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
setjmp.S [PATCH] uml: Use klibc setjmp/longjmp 2006-09-26 08:49:05 -07:00
sigcontext.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.c [PATCH] uml: fix signal frame alignment 2007-01-30 16:01:35 -08:00
stub_segv.c [PATCH] uml: add missing __volatile__ 2006-04-19 09:13:51 -07:00
stub.S [PATCH] uml: skas0 stubs now check system call return values 2005-09-05 00:06:24 -07:00
sys_call_table.S [PATCH] uml: remove unneeded time definitions 2006-06-30 11:25:38 -07:00
syscalls.c [PATCH] uml: more __user annotations 2006-06-05 12:29:17 -07:00
sysrq.c Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
tls.c Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
unmap.c [PATCH] Fix "Remove the use of _syscallX macros in UML" 2006-10-30 12:08:41 -08:00
user-offsets.c [PATCH] uml: include stddef.h correctly 2006-12-07 08:39:29 -08:00