[PATCH 2.6.8.1 3/4] CSA csa_eop: accounting end-of-process hook

[Jay Lan <jlan@engr.sgi.com>]

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Linux Comprehensive System Accounting (CSA) is a set of C programs and
shell scripts that, like other accounting packages, provide methods for
collecting per-process resource usage data, monitoring disk usage, and
charging fees to specific login accounts.

The CSA patchset includes csa_io, csa_mm, csa_eop and csa_module.
Patches csa_io, csa_mm, and csa_eop are responsible for system
accounting data collection and are independent of each other.

csa_eop is a patch that provides a hook for end-of-process handling.

Please find CSA project at http://oss.sgi.com/projects/csa. This set of
csa patches has been tested with the pagg and job kernel patches.
The information of pagg and job project can be found at
http://oss.sgi.com/projects/pagg/


Signed-off-by: Jay Lan <jlan@sgi.com>

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Index: linux/kernel/exit.c
===================================================================
--- linux.orig/kernel/exit.c	2004-09-03 17:17:03.000000000 -0700
+++ linux/kernel/exit.c	2004-09-03 17:17:03.000000000 -0700
@@ -33,6 +33,8 @@
 
 extern void sem_exit (void);
 extern struct task_struct *child_reaper;
+void (*do_eop_acct) (int, struct task_struct *) = NULL;
+EXPORT_SYMBOL(do_eop_acct);
 
 int getrusage(struct task_struct *, int, struct rusage __user *);
 
@@ -826,6 +828,9 @@
 	csa_update_integrals();
 	update_mem_hiwater();
 	acct_process(code);
+	/* Handle end-of-process accounting */
+	if (do_eop_acct != NULL)
+		do_eop_acct(code, tsk);
 	__exit_mm(tsk);
 
 	exit_sem(tsk);
Index: linux/include/linux/acct.h
===================================================================
--- linux.orig/include/linux/acct.h	2004-08-13 22:36:32.000000000 -0700
+++ linux/include/linux/acct.h	2004-09-03 17:17:03.000000000 -0700
@@ -185,6 +185,13 @@
        return x;
 }
 
+/*
+ * extern declaration that provides the hook needed for processing of
+ * end-of-process accounting record
+ *
+ */
+extern void (*do_eop_acct) (int, struct task_struct *);
+
 #endif  /* __KERNEL */
 
 #endif	/* _LINUX_ACCT_H */