From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/tile/mm/migrate.h | 56 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 kernel/arch/tile/mm/migrate.h (limited to 'kernel/arch/tile/mm/migrate.h') diff --git a/kernel/arch/tile/mm/migrate.h b/kernel/arch/tile/mm/migrate.h new file mode 100644 index 000000000..91683d979 --- /dev/null +++ b/kernel/arch/tile/mm/migrate.h @@ -0,0 +1,56 @@ +/* + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + * + * Structure definitions for migration, exposed here for use by + * arch/tile/kernel/asm-offsets.c. + */ + +#ifndef MM_MIGRATE_H +#define MM_MIGRATE_H + +#include +#include + +/* + * This function is used as a helper when setting up the initial + * page table (swapper_pg_dir). + * + * You must mask ALL interrupts prior to invoking this code, since + * you can't legally touch the stack during the cache flush. + */ +extern int flush_and_install_context(HV_PhysAddr page_table, HV_PTE access, + HV_ASID asid, + const unsigned long *cpumask); + +/* + * This function supports migration as a "helper" as follows: + * + * - Set the stack PTE itself to "migrating". + * - Do a global TLB flush for (va,length) and the specified ASIDs. + * - Do a cache-evict on all necessary cpus. + * - Write the new stack PTE. + * + * Note that any non-NULL pointers must not point to the page that + * is handled by the stack_pte itself. + * + * You must mask ALL interrupts prior to invoking this code, since + * you can't legally touch the stack during the cache flush. + */ +extern int homecache_migrate_stack_and_flush(pte_t stack_pte, unsigned long va, + size_t length, pte_t *stack_ptep, + const struct cpumask *cache_cpumask, + const struct cpumask *tlb_cpumask, + HV_Remote_ASID *asids, + int asidcount); + +#endif /* MM_MIGRATE_H */ -- cgit 1.2.3-korg