4/9: cpurc_interface
Adds interface functions to resource group CPU controller.
Signed-off-by: Kurosawa Takahiro <[email protected]>
Signed-off-by: MAEDA Naoaki <[email protected]>
include/linux/cpu_rc.h | 6 ++++++
kernel/cpu_rc.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 51 insertions(+)
Index: linux-2.6.17-rc3/kernel/cpu_rc.c
===================================================================
--- linux-2.6.17-rc3.orig/kernel/cpu_rc.c
+++ linux-2.6.17-rc3/kernel/cpu_rc.c
@@ -232,3 +232,48 @@ void cpu_rc_detect_hunger(task_t *tsk)
tsk->last_activated = 0;
}
+
+void cpu_rc_clear_stat(struct cpu_rc *cr, int cpu)
+{
+ cr->stat[cpu].timestamp = 0;
+ cr->stat[cpu].load = 0;
+ cr->stat[cpu].maybe_hungry = 0;
+}
+
+void cpu_rc_init_cr(struct cpu_rc *cr, struct cpu_rc_domain *rcd)
+{
+ cr->rcd = rcd;
+ cr->share = 0;
+ cr->ts_factor = CPU_RC_TSFACTOR_MAX;
+}
+
+void cpu_rc_get_cr(struct cpu_rc *cr)
+{
+ cpu_rcd_lock(cr);
+ cr->rcd->numcrs++;
+ cpu_rcd_unlock(cr);
+}
+
+void cpu_rc_put_cr(struct cpu_rc *cr)
+{
+ cpu_rcd_lock(cr);
+ cr->is_hungry = 0;
+ cr->rcd->numcrs--;
+ cpu_rcd_unlock(cr);
+}
+
+void cpu_rc_init_rcd(struct cpu_rc_domain *rcd)
+{
+ rcd->cpus = cpu_online_map;
+ spin_lock_init(&rcd->lock);
+ rcd->hungry_count = 0;
+ rcd->numcpus = cpus_weight(cpu_online_map);
+ rcd->numcrs = 0;
+}
+
+void cpu_rc_set_share(struct cpu_rc *cr, int val)
+{
+ cpu_rcd_lock(cr);
+ cr->share = val;
+ cpu_rcd_unlock(cr);
+}
Index: linux-2.6.17-rc3/include/linux/cpu_rc.h
===================================================================
--- linux-2.6.17-rc3.orig/include/linux/cpu_rc.h
+++ linux-2.6.17-rc3/include/linux/cpu_rc.h
@@ -52,6 +52,12 @@ extern unsigned int cpu_rc_load(struct c
extern unsigned int cpu_rc_scale_timeslice(task_t *, unsigned int);
extern void cpu_rc_account(task_t *, unsigned long);
extern void cpu_rc_detect_hunger(task_t *);
+extern void cpu_rc_clear_stat(struct cpu_rc *, int);
+extern void cpu_rc_init_cr(struct cpu_rc *, struct cpu_rc_domain *);
+extern void cpu_rc_get_cr(struct cpu_rc *);
+extern void cpu_rc_put_cr(struct cpu_rc *);
+extern void cpu_rc_init_rcd(struct cpu_rc_domain *);
+extern void cpu_rc_set_share(struct cpu_rc *, int);
static inline void cpu_rc_record_activated(task_t *tsk, unsigned long now)
{
-
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