On Wed, 4 Apr 2007 10:29:31 -0700 William Lee Irwin III <[EMAIL PROTECTED]>
wrote:
>> It is not now possible for a thread to retrieve its own rusage in
>> isolation. Its rusage is nowhere exposed without being intermixed with
>> that of its sibling threads. This patch adds support for an
>> RUSAGE_THREAD who argument that returns rusage for only the desired
>> thread.
On Wed, Apr 04, 2007 at 07:48:29PM +0200, Eric Dumazet wrote:
> Please check mm, because we now return ru_inblock and ru_oublock as well.
> r->ru_inblock = task_io_get_inblock(p);
> r->ru_oublock = task_io_get_oublock(p);
Respun vs. 2.6.21-rc5-mm4, still untested. Also...
Signed-off-by: William Irwin <[EMAIL PROTECTED]>
-- wli
Index: mm-2.6.21-rc5-4/include/linux/resource.h
===================================================================
--- mm-2.6.21-rc5-4.orig/include/linux/resource.h 2007-04-03
23:31:19.000000000 -0700
+++ mm-2.6.21-rc5-4/include/linux/resource.h 2007-04-04 13:08:47.000000000
-0700
@@ -18,7 +18,8 @@
*/
#define RUSAGE_SELF 0
#define RUSAGE_CHILDREN (-1)
-#define RUSAGE_BOTH (-2) /* sys_wait4() uses this */
+#define RUSAGE_THREAD (-2)
+#define RUSAGE_BOTH (-3) /* sys_wait4() uses this */
struct rusage {
struct timeval ru_utime; /* user time used */
Index: mm-2.6.21-rc5-4/kernel/sys.c
===================================================================
--- mm-2.6.21-rc5-4.orig/kernel/sys.c 2007-04-03 23:33:27.000000000 -0700
+++ mm-2.6.21-rc5-4/kernel/sys.c 2007-04-04 13:11:17.000000000 -0700
@@ -2074,6 +2074,16 @@
}
switch (who) {
+ case RUSAGE_THREAD:
+ utime = p->utime;
+ stime = p->stime;
+ r->ru_nvcsw = p->nvcsw;
+ r->ru_nivcsw = p->nivcsw;
+ r->ru_minflt = p->min_flt;
+ r->ru_majflt = p->maj_flt;
+ r->ru_inblock = task_io_get_inblock(p);
+ r->ru_oublock = task_io_get_oublock(p);
+ break;
case RUSAGE_BOTH:
case RUSAGE_CHILDREN:
utime = p->signal->cutime;
@@ -2131,7 +2141,8 @@
asmlinkage long sys_getrusage(int who, struct rusage __user *ru)
{
- if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
+ if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN &&
+ who != RUSAGE_THREAD)
return -EINVAL;
return getrusage(current, who, ru);
}
-
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