From 9acc1853519a0473620d424105f9d49ea5b4e62e Mon Sep 17 00:00:00 2001
From: Jay Lan <jlan@engr.sgi.com>
Date: Sat, 30 Sep 2006 23:28:58 -0700
Subject: [PATCH] csa: Extended system accounting over taskstats

Add extended system accounting handling over taskstats interface.  A
CONFIG_TASK_XACCT flag is created to enable the extended accounting code.

Signed-off-by: Jay Lan <jlan@sgi.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Chris Sturtivant <csturtiv@sgi.com>
Cc: Tony Ernst <tee@sgi.com>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 kernel/taskstats.c |  4 ++++
 kernel/tsacct.c    | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+)

(limited to 'kernel')

diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 6c38dce88e8..5d6a8c54ee8 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -20,6 +20,7 @@
 #include <linux/taskstats_kern.h>
 #include <linux/tsacct_kern.h>
 #include <linux/delayacct.h>
+#include <linux/tsacct_kern.h>
 #include <linux/cpumask.h>
 #include <linux/percpu.h>
 #include <net/genetlink.h>
@@ -204,6 +205,9 @@ static int fill_pid(pid_t pid, struct task_struct *pidtsk,
 	stats->version = TASKSTATS_VERSION;
 	bacct_add_tsk(stats, tsk);
 
+	/* fill in extended acct fields */
+	xacct_add_tsk(stats, tsk);
+
 	/* Define err: label here if needed */
 	put_task_struct(tsk);
 	return rc;
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 899067950a8..410483490cf 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -70,3 +70,22 @@ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
 	strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
 }
 
+
+#ifdef CONFIG_TASK_XACCT
+/*
+ * fill in extended accounting fields
+ */
+void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
+{
+	stats->acct_rss_mem1 = p->acct_rss_mem1;
+	stats->acct_vm_mem1  = p->acct_vm_mem1;
+	if (p->mm) {
+		stats->hiwater_rss   = p->mm->hiwater_rss;
+		stats->hiwater_vm    = p->mm->hiwater_vm;
+	}
+	stats->read_char	= p->rchar;
+	stats->write_char	= p->wchar;
+	stats->read_syscalls	= p->syscr;
+	stats->write_syscalls	= p->syscw;
+}
+#endif
-- 
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