[patch] 2.4-ac: real-time / scheduling information out of /proc

[patch] 2.4-ac: real-time / scheduling information out of /proc

[Robert Love]

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Alan,

The attached patch exports scheduling policy and real-time priority from
/proc/<pid>/stats.

Support for reading this information is in procps CVS.

This information has been in 2.5 since 2.5.18.

It does not break old versions of procps as it just adds the new entries
to the end.  I do not know what the practice is wrt adding proc fields
in stable kernels, however since this does not break procps, is
supported by current procps, and is in 2.5 -- it is perfectly safe to
me.

Patch is against 2.4.20-pre7-ac3, please apply.

	Robert Love


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diff -urN linux-2.4.20-pre7-ac3/fs/proc/array.c linux/fs/proc/array.c
--- linux-2.4.20-pre7-ac3/fs/proc/array.c	Thu Sep 19 16:10:34 2002
+++ linux/fs/proc/array.c	Thu Sep 19 17:18:36 2002
@@ -346,7 +346,7 @@
 	read_unlock(&tasklist_lock);
 	res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
 %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %lu %lu %lu \
-%lu %lu %lu %lu %lu %lu %lu %lu %d %d\n",
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
 		task->pid,
 		task->comm,
 		state,
@@ -389,7 +389,9 @@
 		task->nswap,
 		task->cnswap,
 		task->exit_signal,
-		task_cpu(task));
+		task_cpu(task)
+		task->rt_priority,
+		task->policy);
 	if(mm)
 		mmput(mm);
 	return res;

Re: [patch] 2.4-ac: real-time / scheduling information out of /proc

[Robert Love]

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On Thu, 2002-09-19 at 17:26, Robert Love wrote:

> The attached patch exports scheduling policy and real-time priority from
> /proc/<pid>/stats.
> 
> Support for reading this information is in procps CVS.
> 
> This information has been in 2.5 since 2.5.18.
> 
> It does not break old versions of procps as it just adds the new entries
> to the end.  I do not know what the practice is wrt adding proc fields
> in stable kernels, however since this does not break procps, is
> supported by current procps, and is in 2.5 -- it is perfectly safe to
> me.
> 
> Patch is against 2.4.20-pre7-ac3, please apply.

Ugh, missing a comma.  Sorry,

	Robert Love




[-- Attachment #2: proc-add-rt-info-rml-2.4.20-pre7-ac3-1.patch --]
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diff -urN linux-2.4.20-pre7-ac3/fs/proc/array.c linux/fs/proc/array.c
--- linux-2.4.20-pre7-ac3/fs/proc/array.c	Thu Sep 19 16:10:34 2002
+++ linux/fs/proc/array.c	Thu Sep 19 17:18:36 2002
@@ -346,7 +346,7 @@
 	read_unlock(&tasklist_lock);
 	res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
 %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %lu %lu %lu \
-%lu %lu %lu %lu %lu %lu %lu %lu %d %d\n",
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
 		task->pid,
 		task->comm,
 		state,
@@ -389,7 +389,9 @@
 		task->nswap,
 		task->cnswap,
 		task->exit_signal,
-		task_cpu(task));
+		task_cpu(task),
+		task->rt_priority,
+		task->policy);
 	if(mm)
 		mmput(mm);
 	return res;