From 48cd6783d73afae968acf1c36e7b4e149328d20b Mon Sep 17 00:00:00 2001
From: Jack Steiner <steiner@sgi.com>
Date: Mon, 12 Jul 2004 00:27:49 -0700
Subject: [PATCH] ia64: Reduce TLB flushing during process migration

This patch adds an architecture-specific callout after explicit
processor migrations.  The callout allows architectures (or platforms)
to update TLB specific information (ex., cpu_vm_mask).

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>
---
 kernel/sched.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'kernel')

diff --git a/kernel/sched.c b/kernel/sched.c
index 9e676db0267b..205a81d64b20 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -40,6 +40,7 @@
 #include <linux/cpu.h>
 #include <linux/percpu.h>
 #include <linux/kthread.h>
+#include <asm/tlb.h>
 
 #include <asm/unistd.h>
 
@@ -3349,6 +3350,7 @@ int set_cpus_allowed(task_t *p, cpumask_t new_mask)
 		task_rq_unlock(rq, &flags);
 		wake_up_process(rq->migration_thread);
 		wait_for_completion(&req.done);
+		tlb_migrate_finish(p->mm);
 		return 0;
 	}
 out:
-- 
cgit v1.2.3