[PATCH] per process I/O statistics for userspace

Levent Serinol
2005-09-12T12:27:11Z

with following patch, userspace processes/utilities will be able to
access per process I/O statistics. for example, top like utilites can
use this information.

--- linux-2.6.13/fs/proc/array.c.org 2005-08-29 02:41:01.000000000 +0300
+++ linux-2.6.13/fs/proc/array.c 2005-09-12 10:22:55.000000000 +0300
@@ -408,7 +408,7 @@ static int do_task_stat(struct task_stru

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 %lu %lu %lu %d %d %lu %lu\n",
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu %llu %llu\n",
task->pid,
tcomm,
state,
@@ -453,7 +453,9 @@ static int do_task_stat(struct task_stru
task->exit_signal,
task_cpu(task),
task->rt_priority,
- task->policy);
+ task->policy,
+ task->rchar,
+ task->wchar);
if(mm)
mmput(mm);
return res;
--
Signed-off-by: Levent Serinol <lserinol@gmail.com>