diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/linux/zsmalloc.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
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 <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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 <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/linux/zsmalloc.h')
-rw-r--r-- | kernel/include/linux/zsmalloc.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/include/linux/zsmalloc.h b/kernel/include/linux/zsmalloc.h new file mode 100644 index 000000000..1338190b5 --- /dev/null +++ b/kernel/include/linux/zsmalloc.h @@ -0,0 +1,52 @@ +/* + * zsmalloc memory allocator + * + * Copyright (C) 2011 Nitin Gupta + * Copyright (C) 2012, 2013 Minchan Kim + * + * This code is released using a dual license strategy: BSD/GPL + * You can choose the license that better fits your requirements. + * + * Released under the terms of 3-clause BSD License + * Released under the terms of GNU General Public License Version 2.0 + */ + +#ifndef _ZS_MALLOC_H_ +#define _ZS_MALLOC_H_ + +#include <linux/types.h> + +/* + * zsmalloc mapping modes + * + * NOTE: These only make a difference when a mapped object spans pages. + * They also have no effect when PGTABLE_MAPPING is selected. + */ +enum zs_mapmode { + ZS_MM_RW, /* normal read-write mapping */ + ZS_MM_RO, /* read-only (no copy-out at unmap time) */ + ZS_MM_WO /* write-only (no copy-in at map time) */ + /* + * NOTE: ZS_MM_WO should only be used for initializing new + * (uninitialized) allocations. Partial writes to already + * initialized allocations should use ZS_MM_RW to preserve the + * existing data. + */ +}; + +struct zs_pool; + +struct zs_pool *zs_create_pool(char *name, gfp_t flags); +void zs_destroy_pool(struct zs_pool *pool); + +unsigned long zs_malloc(struct zs_pool *pool, size_t size); +void zs_free(struct zs_pool *pool, unsigned long obj); + +void *zs_map_object(struct zs_pool *pool, unsigned long handle, + enum zs_mapmode mm); +void zs_unmap_object(struct zs_pool *pool, unsigned long handle); + +unsigned long zs_get_total_pages(struct zs_pool *pool); +unsigned long zs_compact(struct zs_pool *pool); + +#endif |