Commit 4dee26b7 authored by Roman Zippel's avatar Roman Zippel Committed by Linus Torvalds
Browse files

[PATCH] hrtimers: remove it_real_value calculation from proc/*/stat 



Remove the it_real_value from /proc/*/stat, during 1.2.x was the last time it
returned useful data (as it was directly maintained by the scheduler), now
it's only a waste of time to calculate it.  Return 0 instead.

Signed-off-by: default avatarRoman Zippel <zippel@linux-m68k.org>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b75f7a51

fs/proc/array.c

+1 −4
Original line number Diff line number Diff line
@@ -330,7 +330,6 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) 
	unsigned long  min_flt = 0,  maj_flt = 0;

	cputime_t cutime, cstime, utime, stime;

	unsigned long rsslim = 0;

	DEFINE_KTIME(it_real_value);

	struct task_struct *t;

	char tcomm[sizeof(task->comm)];
@@ -386,7 +385,6 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) 
			utime = cputime_add(utime, task->signal->utime);

			stime = cputime_add(stime, task->signal->stime);

		}

		it_real_value = task->signal->real_timer.expires;

	}

	ppid = pid_alive(task) ? task->group_leader->real_parent->tgid : 0;

	read_unlock(&tasklist_lock);
@@ -413,7 +411,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) 
	start_time = nsec_to_clock_t(start_time);



	res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \

%lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu \

%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \

%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",

		task->pid,

		tcomm,
@@ -435,7 +433,6 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) 
		priority,

		nice,

		num_threads,

		(long) ktime_to_clock_t(it_real_value),

		start_time,

		vsize,

		mm ? get_mm_rss(mm) : 0,

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