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Subject[PATCH] kill taskstats_tgid_init() and acct_init_pacct() and cleanup copy_signal()
(on top of previous patchset)

Kill taskstats_tgid_init() and acct_init_pacct() because we don't
need them any more. Cleanup copy_signal() from these functions
and remove the call to task_io_accounting_init() (we can't kill
it because it's still being used by copy_process(), so just removing
it from copy_signal()).

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
---

--- a/include/linux/taskstats_kern.h 2009-12-07 20:20:02.000000000 +0100
+++ b/include/linux/taskstats_kern.h 2009-12-07 20:20:48.000000000 +0100
@@ -14,10 +14,6 @@
extern struct kmem_cache *taskstats_cache;
extern struct mutex taskstats_exit_mutex;

-static inline void taskstats_tgid_init(struct signal_struct *sig)
-{
-}
-
static inline void taskstats_tgid_free(struct signal_struct *sig)
{
if (sig->stats)
@@ -29,8 +25,6 @@ extern void taskstats_init_early(void);
#else
static inline void taskstats_exit(struct task_struct *tsk, int group_dead)
{}
-static inline void taskstats_tgid_init(struct signal_struct *sig)
-{}
static inline void taskstats_tgid_free(struct signal_struct *sig)
{}
static inline void taskstats_init_early(void)
--- a/kernel/acct.c 2009-12-07 20:23:43.000000000 +0100
+++ b/kernel/acct.c 2009-12-07 20:24:30.000000000 +0100
@@ -587,14 +587,6 @@ out:
}

/**
- * acct_init_pacct - initialize a new pacct_struct
- * @pacct: per-process accounting info struct to initialize
- */
-void acct_init_pacct(struct pacct_struct *pacct)
-{
-}
-
-/**
* acct_collect - collect accounting information into pacct_struct
* @exitcode: task exit code
* @group_dead: not 0, if this thread is the last one in the process.
--- a/include/linux/acct.h 2009-12-07 20:26:35.000000000 +0100
+++ b/include/linux/acct.h 2009-12-07 20:26:43.000000000 +0100
@@ -123,14 +123,12 @@ struct pacct_struct;
struct pid_namespace;
extern void acct_auto_close_mnt(struct vfsmount *m);
extern void acct_auto_close(struct super_block *sb);
-extern void acct_init_pacct(struct pacct_struct *pacct);
extern void acct_collect(long exitcode, int group_dead);
extern void acct_process(void);
extern void acct_exit_ns(struct pid_namespace *);
#else
#define acct_auto_close_mnt(x) do { } while (0)
#define acct_auto_close(x) do { } while (0)
-#define acct_init_pacct(x) do { } while (0)
#define acct_collect(x,y) do { } while (0)
#define acct_process() do { } while (0)
#define acct_exit_ns(ns) do { } while (0)
--- a/kernel/fork.c 2009-12-07 20:25:18.000000000 +0100
+++ b/kernel/fork.c 2009-12-07 20:36:49.000000000 +0100
@@ -861,17 +861,12 @@ static int copy_signal(unsigned long clo
hrtimer_init(&sig->real_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
sig->real_timer.function = it_real_fn;

- task_io_accounting_init(&sig->ioac);
- taskstats_tgid_init(sig);
-
task_lock(current->group_leader);
memcpy(sig->rlim, current->signal->rlim, sizeof sig->rlim);
task_unlock(current->group_leader);

posix_cpu_timers_init_group(sig);

- acct_init_pacct(&sig->pacct);
-
tty_audit_fork(sig);

sig->oom_adj = current->signal->oom_adj;

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