Re: [PATCH] - Reduce TLB flushing during process migration

[Jack Steiner <steiner@sgi.com>]

On Wed, Jun 23, 2004 at 02:33:18PM -0700, Andrew Morton wrote:
> Jack Steiner <steiner@sgi.com> wrote:
> >
> > This patch adds a platform specific hook to allow an arch-specific
> > function to be called after an explicit migration.
> 
> OK by me.  David, could you please merge this up?
> 
> Jack, please prepare an update for Documentation/cachetlb.txt.




Signed-off-by: Jack Steiner <steiner@sgi.com>




--- linuxbase/Documentation/cachetlb.txt	2004-06-22 07:15:46.000000000 -0500
+++ linux/Documentation/cachetlb.txt	2004-06-24 07:54:50.000000000 -0500
@@ -132,6 +132,17 @@
 	translations for software managed TLB configurations.
 	The sparc64 port currently does this.
 
+7) void tlb_migrate_finish(struct mm_struct *mm)
+
+	This interface is called at the end of an explicit
+	process migration. This interface provides a hook 
+	to allow a platform to update TLB or context-specific 
+	information for the address space.
+
+	The ia64 sn2 platform is one example of a platform
+	that uses this interface.
+
+
 Next, we have the cache flushing interfaces.  In general, when Linux
 is changing an existing virtual-->physical mapping to a new value,
 the sequence will be in one of the following forms:

-- 
Thanks

Jack Steiner (steiner@sgi.com)          651-683-5302
Principal Engineer                      SGI - Silicon Graphics, Inc.