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    Subject[PATCH 7/7] Freezer: Move frozen_process to kernel/power/process.c
    Date
    From: Gautham R Shenoy <ego@in.ibm.com>

    Other than refrigerator, no one else calls frozen_process(). So move it
    from include/linux/freezer.h to kernel/power/process.c.

    Also, since a task can be marked as frozen by itself, we don't need to pass
    the (struct task_struct *p) parameter to frozen_process().

    Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    ---
    include/linux/freezer.h | 13 -------------
    kernel/power/process.c | 14 +++++++++++++-
    2 files changed, 13 insertions(+), 14 deletions(-)

    Index: linux-2.6/include/linux/freezer.h
    ===================================================================
    --- linux-2.6.orig/include/linux/freezer.h 2007-05-10 21:44:47.000000000 +0200
    +++ linux-2.6/include/linux/freezer.h 2007-05-10 21:44:50.000000000 +0200
    @@ -58,18 +58,6 @@ static inline int thaw_process(struct ta
    return 0;
    }

    -/*
    - * freezing is complete, mark process as frozen
    - */
    -static inline void frozen_process(struct task_struct *p)
    -{
    - if (!unlikely(p->flags & PF_NOFREEZE)) {
    - p->flags |= PF_FROZEN;
    - wmb();
    - }
    - clear_tsk_thread_flag(p, TIF_FREEZE);
    -}
    -
    extern void refrigerator(void);
    extern int freeze_processes(void);
    extern void thaw_processes(void);
    @@ -132,7 +120,6 @@ static inline int frozen(struct task_str
    static inline int freezing(struct task_struct *p) { return 0; }
    static inline void freeze(struct task_struct *p) { BUG(); }
    static inline int thaw_process(struct task_struct *p) { return 1; }
    -static inline void frozen_process(struct task_struct *p) { BUG(); }

    static inline void refrigerator(void) {}
    static inline int freeze_processes(void) { BUG(); return 0; }
    Index: linux-2.6/kernel/power/process.c
    ===================================================================
    --- linux-2.6.orig/kernel/power/process.c 2007-05-10 21:44:40.000000000 +0200
    +++ linux-2.6/kernel/power/process.c 2007-05-10 21:44:50.000000000 +0200
    @@ -32,6 +32,18 @@ static inline int freezeable(struct task
    return 1;
    }

    +/*
    + * freezing is complete, mark current process as frozen
    + */
    +static inline void frozen_process(void)
    +{
    + if (!unlikely(current->flags & PF_NOFREEZE)) {
    + current->flags |= PF_FROZEN;
    + wmb();
    + }
    + clear_tsk_thread_flag(current, TIF_FREEZE);
    +}
    +
    /* Refrigerator is place where frozen processes are stored :-). */
    void refrigerator(void)
    {
    @@ -41,7 +53,7 @@ void refrigerator(void)

    task_lock(current);
    if (freezing(current)) {
    - frozen_process(current);
    + frozen_process();
    task_unlock(current);
    } else {
    task_unlock(current);
    -
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