mmc: s3c6410: enable ADMA feature in 6410 sdhci controller

[safe/jmp/linux-2.6] / kernel / tsacct.c

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 47c71da..0a67e04 100644 (file)
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -20,27 +20,28 @@
 #include <linux/sched.h>
 #include <linux/tsacct_kern.h>
 #include <linux/acct.h>
+#include <linux/jiffies.h>
+#include <linux/mm.h>
 
-
-#define USEC_PER_TICK  (USEC_PER_SEC/HZ)
 /*
  * fill in basic accounting fields
  */
 void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
 {
+       const struct cred *tcred;
        struct timespec uptime, ts;
-       s64 ac_etime;
+       u64 ac_etime;
 
        BUILD_BUG_ON(TS_COMM_LEN < TASK_COMM_LEN);
 
        /* calculate task elapsed time in timespec */
        do_posix_clock_monotonic_gettime(&uptime);
-       ts = timespec_sub(uptime, current->group_leader->start_time);
-       /* rebase elapsed time to usec */
+       ts = timespec_sub(uptime, tsk->start_time);
+       /* rebase elapsed time to usec (should never be negative) */
        ac_etime = timespec_to_ns(&ts);
        do_div(ac_etime, NSEC_PER_USEC);
        stats->ac_etime = ac_etime;
-       stats->ac_btime = xtime.tv_sec - ts.tv_sec;
+       stats->ac_btime = get_seconds() - ts.tv_sec;
        if (thread_group_leader(tsk)) {
                stats->ac_exitcode = tsk->exit_code;
                if (tsk->flags & PF_FORKNOEXEC)
@@ -54,41 +55,64 @@ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
                stats->ac_flag |= AXSIG;
        stats->ac_nice   = task_nice(tsk);
        stats->ac_sched  = tsk->policy;
-       stats->ac_uid    = tsk->uid;
-       stats->ac_gid    = tsk->gid;
        stats->ac_pid    = tsk->pid;
-       stats->ac_ppid   = (tsk->parent) ? tsk->parent->pid : 0;
+       rcu_read_lock();
+       tcred = __task_cred(tsk);
+       stats->ac_uid    = tcred->uid;
+       stats->ac_gid    = tcred->gid;
+       stats->ac_ppid   = pid_alive(tsk) ?
+                               rcu_dereference(tsk->real_parent)->tgid : 0;
+       rcu_read_unlock();
        stats->ac_utime  = cputime_to_msecs(tsk->utime) * USEC_PER_MSEC;
        stats->ac_stime  = cputime_to_msecs(tsk->stime) * USEC_PER_MSEC;
+       stats->ac_utimescaled =
+               cputime_to_msecs(tsk->utimescaled) * USEC_PER_MSEC;
+       stats->ac_stimescaled =
+               cputime_to_msecs(tsk->stimescaled) * USEC_PER_MSEC;
        stats->ac_minflt = tsk->min_flt;
        stats->ac_majflt = tsk->maj_flt;
-       /* Each process gets a minimum of one usec cpu time */
-       if ((stats->ac_utime == 0) && (stats->ac_stime == 0)) {
-               stats->ac_stime = 1;
-       }
 
        strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
 }
 
 
 #ifdef CONFIG_TASK_XACCT
+
+#define KB 1024
+#define MB (1024*KB)
 /*
  * fill in extended accounting fields
  */
 void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
 {
-       stats->acct_rss_mem1 = p->acct_rss_mem1;
-       stats->acct_vm_mem1  = p->acct_vm_mem1;
-       if (p->mm) {
-               stats->hiwater_rss   = p->mm->hiwater_rss;
-               stats->hiwater_vm    = p->mm->hiwater_vm;
+       struct mm_struct *mm;
+
+       /* convert pages-usec to Mbyte-usec */
+       stats->coremem = p->acct_rss_mem1 * PAGE_SIZE / MB;
+       stats->virtmem = p->acct_vm_mem1 * PAGE_SIZE / MB;
+       mm = get_task_mm(p);
+       if (mm) {
+               /* adjust to KB unit */
+               stats->hiwater_rss   = get_mm_hiwater_rss(mm) * PAGE_SIZE / KB;
+               stats->hiwater_vm    = get_mm_hiwater_vm(mm)  * PAGE_SIZE / KB;
+               mmput(mm);
        }
-       stats->read_char        = p->rchar;
-       stats->write_char       = p->wchar;
-       stats->read_syscalls    = p->syscr;
-       stats->write_syscalls   = p->syscw;
+       stats->read_char        = p->ioac.rchar;
+       stats->write_char       = p->ioac.wchar;
+       stats->read_syscalls    = p->ioac.syscr;
+       stats->write_syscalls   = p->ioac.syscw;
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+       stats->read_bytes       = p->ioac.read_bytes;
+       stats->write_bytes      = p->ioac.write_bytes;
+       stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes;
+#else
+       stats->read_bytes       = 0;
+       stats->write_bytes      = 0;
+       stats->cancelled_write_bytes = 0;
+#endif
 }
-
+#undef KB
+#undef MB
 
 /**
  * acct_update_integrals - update mm integral fields in task_struct
@@ -97,14 +121,25 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
 void acct_update_integrals(struct task_struct *tsk)
 {
        if (likely(tsk->mm)) {
-               long delta =
-                       cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd;
+               cputime_t time, dtime;
+               struct timeval value;
+               unsigned long flags;
+               u64 delta;
+
+               local_irq_save(flags);
+               time = tsk->stime + tsk->utime;
+               dtime = cputime_sub(time, tsk->acct_timexpd);
+               jiffies_to_timeval(cputime_to_jiffies(dtime), &value);
+               delta = value.tv_sec;
+               delta = delta * USEC_PER_SEC + value.tv_usec;
 
                if (delta == 0)
-                       return;
-               tsk->acct_stimexpd = tsk->stime;
+                       goto out;
+               tsk->acct_timexpd = time;
                tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
                tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
+       out:
+               local_irq_restore(flags);
        }
 }
 
@@ -114,7 +149,7 @@ void acct_update_integrals(struct task_struct *tsk)
  */
 void acct_clear_integrals(struct task_struct *tsk)
 {
-       tsk->acct_stimexpd = 0;
+       tsk->acct_timexpd = 0;
        tsk->acct_rss_mem1 = 0;
        tsk->acct_vm_mem1 = 0;
 }