* cpuset interface
*
* Copyright (C) 2003 BULL SA
- * Copyright (C) 2004 Silicon Graphics, Inc.
+ * Copyright (C) 2004-2006 Silicon Graphics, Inc.
*
*/
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/nodemask.h>
+#include <linux/cgroup.h>
+#include <linux/mm.h>
#ifdef CONFIG_CPUSETS
+extern int number_of_cpusets; /* How many cpusets are defined in system? */
+
extern int cpuset_init(void);
extern void cpuset_init_smp(void);
-extern void cpuset_fork(struct task_struct *p);
-extern void cpuset_exit(struct task_struct *p);
-extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
+extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask);
+extern void cpuset_cpus_allowed_locked(struct task_struct *p,
+ struct cpumask *mask);
+extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
+#define cpuset_current_mems_allowed (current->mems_allowed)
void cpuset_init_current_mems_allowed(void);
-void cpuset_update_current_mems_allowed(void);
-void cpuset_restrict_to_mems_allowed(unsigned long *nodes);
-int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
-extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
-extern int cpuset_excl_nodes_overlap(const struct task_struct *p);
-extern struct file_operations proc_cpuset_operations;
-extern char *cpuset_task_status_allowed(struct task_struct *task, char *buffer);
+int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask);
+
+extern int __cpuset_node_allowed_softwall(int node, gfp_t gfp_mask);
+extern int __cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask);
+
+static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask)
+{
+ return number_of_cpusets <= 1 ||
+ __cpuset_node_allowed_softwall(node, gfp_mask);
+}
+
+static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask)
+{
+ return number_of_cpusets <= 1 ||
+ __cpuset_node_allowed_hardwall(node, gfp_mask);
+}
+
+static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
+{
+ return cpuset_node_allowed_softwall(zone_to_nid(z), gfp_mask);
+}
+
+static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask)
+{
+ return cpuset_node_allowed_hardwall(zone_to_nid(z), gfp_mask);
+}
+
+extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1,
+ const struct task_struct *tsk2);
+
+#define cpuset_memory_pressure_bump() \
+ do { \
+ if (cpuset_memory_pressure_enabled) \
+ __cpuset_memory_pressure_bump(); \
+ } while (0)
+extern int cpuset_memory_pressure_enabled;
+extern void __cpuset_memory_pressure_bump(void);
+
+extern const struct file_operations proc_cpuset_operations;
+struct seq_file;
+extern void cpuset_task_status_allowed(struct seq_file *m,
+ struct task_struct *task);
+
+extern void cpuset_lock(void);
+extern void cpuset_unlock(void);
+
+extern int cpuset_mem_spread_node(void);
+
+static inline int cpuset_do_page_mem_spread(void)
+{
+ return current->flags & PF_SPREAD_PAGE;
+}
+
+static inline int cpuset_do_slab_mem_spread(void)
+{
+ return current->flags & PF_SPREAD_SLAB;
+}
+
+extern int current_cpuset_is_being_rebound(void);
+
+extern void rebuild_sched_domains(void);
+
+extern void cpuset_print_task_mems_allowed(struct task_struct *p);
+
+static inline void set_mems_allowed(nodemask_t nodemask)
+{
+ current->mems_allowed = nodemask;
+}
#else /* !CONFIG_CPUSETS */
static inline int cpuset_init(void) { return 0; }
static inline void cpuset_init_smp(void) {}
-static inline void cpuset_fork(struct task_struct *p) {}
-static inline void cpuset_exit(struct task_struct *p) {}
-static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p)
+static inline void cpuset_cpus_allowed(struct task_struct *p,
+ struct cpumask *mask)
+{
+ cpumask_copy(mask, cpu_possible_mask);
+}
+static inline void cpuset_cpus_allowed_locked(struct task_struct *p,
+ struct cpumask *mask)
+{
+ cpumask_copy(mask, cpu_possible_mask);
+}
+
+static inline nodemask_t cpuset_mems_allowed(struct task_struct *p)
{
- return cpu_possible_map;
+ return node_possible_map;
}
+#define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY])
static inline void cpuset_init_current_mems_allowed(void) {}
-static inline void cpuset_update_current_mems_allowed(void) {}
-static inline void cpuset_restrict_to_mems_allowed(unsigned long *nodes) {}
-static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl)
+static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask)
{
return 1;
}
-static inline int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
+static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask)
{
return 1;
}
-static inline int cpuset_excl_nodes_overlap(const struct task_struct *p)
+static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask)
{
return 1;
}
-static inline char *cpuset_task_status_allowed(struct task_struct *task,
- char *buffer)
+static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
+{
+ return 1;
+}
+
+static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask)
+{
+ return 1;
+}
+
+static inline int cpuset_mems_allowed_intersects(const struct task_struct *tsk1,
+ const struct task_struct *tsk2)
+{
+ return 1;
+}
+
+static inline void cpuset_memory_pressure_bump(void) {}
+
+static inline void cpuset_task_status_allowed(struct seq_file *m,
+ struct task_struct *task)
+{
+}
+
+static inline void cpuset_lock(void) {}
+static inline void cpuset_unlock(void) {}
+
+static inline int cpuset_mem_spread_node(void)
+{
+ return 0;
+}
+
+static inline int cpuset_do_page_mem_spread(void)
+{
+ return 0;
+}
+
+static inline int cpuset_do_slab_mem_spread(void)
+{
+ return 0;
+}
+
+static inline int current_cpuset_is_being_rebound(void)
+{
+ return 0;
+}
+
+static inline void rebuild_sched_domains(void)
+{
+ partition_sched_domains(1, NULL, NULL);
+}
+
+static inline void cpuset_print_task_mems_allowed(struct task_struct *p)
+{
+}
+
+static inline void set_mems_allowed(nodemask_t nodemask)
{
- return buffer;
}
#endif /* !CONFIG_CPUSETS */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff