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Huang, Xiaolan 839052d27e [IA64] fix personality(PER_LINUX32) performance issue 
The patch aims to fix a performance issue for the syscall
personality(PER_LINUX32).

On IA-64 box, the syscall personality (PER_LINUX32) has poor performance
because it failed to find the Linux/x86 execution domain. Then it tried
to load the kernel module however it failed always and it used the default
execution domain PER_LINUX instead. Requesting kernel modules is very
expensive. It caused the performance issue. (see the function
lookup_exec_domain in kernel/exec_domain.c).

To resolve the issue, execution domain Linux/x86 is always registered in
initialization time for IA-64 architecture.

Signed-off-by: Xiaolan Huang <xiaolan.huang@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-15 09:54:19 -07:00
..
configs [IA64] move defconfig to arch/ia64/configs/ 2008-03-04 14:19:06 -08:00
dig [PATCH] tty: Remove include of screen_info.h from tty.h 2006-07-10 13:24:16 -07:00
hp tty: The big operations rework 2008-04-30 08:29:47 -07:00
ia32 [IA64] fix personality(PER_LINUX32) performance issue 2008-05-15 09:54:19 -07:00
kernel [IA64] Properly unregister legacy interrupts 2008-05-14 16:00:14 -07:00
kvm rename div64_64 to div64_u64 2008-05-01 08:03:58 -07:00
lib [IA64] export copy_page() to modules 2007-12-07 16:10:19 -08:00
mm [IA64] fix personality(PER_LINUX32) performance issue 2008-05-15 09:54:19 -07:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
pci PCI: ia64: use generic pci_enable_resources() 2008-04-20 21:47:05 -07:00
scripts [IA64] don't assume that unwcheck.py is executable 2007-12-07 14:42:08 -08:00
sn ia64: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
uv [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
install.sh
Kconfig [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
Kconfig.debug [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
Makefile [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
module.lds