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/include/linux/vmpressure.h | 48 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 kernel/include/linux/vmpressure.h (limited to 'kernel/include/linux/vmpressure.h') diff --git a/kernel/include/linux/vmpressure.h b/kernel/include/linux/vmpressure.h new file mode 100644 index 000000000..3e4535876 --- /dev/null +++ b/kernel/include/linux/vmpressure.h @@ -0,0 +1,48 @@ +#ifndef __LINUX_VMPRESSURE_H +#define __LINUX_VMPRESSURE_H + +#include +#include +#include +#include +#include +#include +#include + +struct vmpressure { + unsigned long scanned; + unsigned long reclaimed; + /* The lock is used to keep the scanned/reclaimed above in sync. */ + struct spinlock sr_lock; + + /* The list of vmpressure_event structs. */ + struct list_head events; + /* Have to grab the lock on events traversal or modifications. */ + struct mutex events_lock; + + struct work_struct work; +}; + +struct mem_cgroup; + +#ifdef CONFIG_MEMCG +extern void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, + unsigned long scanned, unsigned long reclaimed); +extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio); + +extern void vmpressure_init(struct vmpressure *vmpr); +extern void vmpressure_cleanup(struct vmpressure *vmpr); +extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg); +extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr); +extern int vmpressure_register_event(struct mem_cgroup *memcg, + struct eventfd_ctx *eventfd, + const char *args); +extern void vmpressure_unregister_event(struct mem_cgroup *memcg, + struct eventfd_ctx *eventfd); +#else +static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, + unsigned long scanned, unsigned long reclaimed) {} +static inline void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, + int prio) {} +#endif /* CONFIG_MEMCG */ +#endif /* __LINUX_VMPRESSURE_H */ -- cgit 1.2.3-korg