lkml.org 
[lkml]   [2012]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 10/40] autonuma: mm_autonuma and sched_autonuma data structures
    Date
    Define the two data structures that collect the per-process (in the
    mm) and per-thread (in the task_struct) statistical information that
    are the input of the CPU follow memory algorithms in the NUMA
    scheduler.

    Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
    ---
    include/linux/autonuma_types.h | 68 ++++++++++++++++++++++++++++++++++++++++
    1 files changed, 68 insertions(+), 0 deletions(-)
    create mode 100644 include/linux/autonuma_types.h

    diff --git a/include/linux/autonuma_types.h b/include/linux/autonuma_types.h
    new file mode 100644
    index 0000000..9e697e3
    --- /dev/null
    +++ b/include/linux/autonuma_types.h
    @@ -0,0 +1,68 @@
    +#ifndef _LINUX_AUTONUMA_TYPES_H
    +#define _LINUX_AUTONUMA_TYPES_H
    +
    +#ifdef CONFIG_AUTONUMA
    +
    +#include <linux/numa.h>
    +
    +/*
    + * Per-mm (process) structure dynamically allocated only if autonuma
    + * is not impossible. This links the mm to scan into the
    + * knuma_scand.mm_head and it contains the NUMA memory placement
    + * statistics for the process (generated by knuma_scand).
    + */
    +struct mm_autonuma {
    + /* list node to link the "mm" into the knuma_scand.mm_head */
    + struct list_head mm_node;
    + struct mm_struct *mm;
    + unsigned long mm_numa_fault_pass; /* zeroed from here during allocation */
    + unsigned long mm_numa_fault_tot;
    + unsigned long mm_numa_fault[0];
    +};
    +
    +extern int alloc_mm_autonuma(struct mm_struct *mm);
    +extern void free_mm_autonuma(struct mm_struct *mm);
    +extern void __init mm_autonuma_init(void);
    +
    +/*
    + * Per-task (thread) structure dynamically allocated only if autonuma
    + * is not impossible. This contains the preferred autonuma_node where
    + * the userland thread should be scheduled into (only relevant if
    + * tsk->mm is not null) and the per-thread NUMA accesses statistics
    + * (generated by the NUMA hinting page faults).
    + */
    +struct task_autonuma {
    + int autonuma_node;
    + /* zeroed from the below field during allocation */
    + unsigned long task_numa_fault_pass;
    + unsigned long task_numa_fault_tot;
    + unsigned long task_numa_fault[0];
    +};
    +
    +extern int alloc_task_autonuma(struct task_struct *tsk,
    + struct task_struct *orig,
    + int node);
    +extern void __init task_autonuma_init(void);
    +extern void free_task_autonuma(struct task_struct *tsk);
    +
    +#else /* CONFIG_AUTONUMA */
    +
    +static inline int alloc_mm_autonuma(struct mm_struct *mm)
    +{
    + return 0;
    +}
    +static inline void free_mm_autonuma(struct mm_struct *mm) {}
    +static inline void mm_autonuma_init(void) {}
    +
    +static inline int alloc_task_autonuma(struct task_struct *tsk,
    + struct task_struct *orig,
    + int node)
    +{
    + return 0;
    +}
    +static inline void task_autonuma_init(void) {}
    +static inline void free_task_autonuma(struct task_struct *tsk) {}
    +
    +#endif /* CONFIG_AUTONUMA */
    +
    +#endif /* _LINUX_AUTONUMA_TYPES_H */

    \
     
     \ /
      Last update: 2012-06-28 16:01    [W:6.441 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site