hrtimer: create a "timer_slack" field in the task struct

[linux-2.6-omap-h63xx.git] / kernel / sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index 3dacb00a7f765977c92d896ca4556f93ff87616b..1b96401a0576ab8b3d5b09641eabc3c53080b0e4 100644 (file)
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -169,9 +169,9 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
                                pgrp = find_vpid(who);
                        else
                                pgrp = task_pgrp(current);
-                       do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+                       do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
                                error = set_one_prio(p, niceval, error);
-                       } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+                       } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
                        break;
                case PRIO_USER:
                        user = current->user;
@@ -229,11 +229,11 @@ asmlinkage long sys_getpriority(int which, int who)
                                pgrp = find_vpid(who);
                        else
                                pgrp = task_pgrp(current);
-                       do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+                       do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
                                niceval = 20 - task_nice(p);
                                if (niceval > retval)
                                        retval = niceval;
-                       } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+                       } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
                        break;
                case PRIO_USER:
                        user = current->user;
@@ -1727,6 +1727,16 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
                case PR_SET_TSC:
                        error = SET_TSC_CTL(arg2);
                        break;
+               case PR_GET_TIMERSLACK:
+                       error = current->timer_slack_ns;
+                       break;
+               case PR_SET_TIMERSLACK:
+                       if (arg2 <= 0)
+                               current->timer_slack_ns =
+                                       current->default_timer_slack_ns;
+                       else
+                               current->timer_slack_ns = arg2;
+                       break;
                default:
                        error = -EINVAL;
                        break;