From: Mikael Pettersson <mikpe@csd.uu.se>

- s/perfctr_copy_thread(&p->thread)/perfctr_copy_task(p, regs)/g
  Needed to access to the task struct (for setting owner in new
  perfctr state) and for accessing regs (for checking user_mode(regs))
- Add perfctr_release_task() callback in kernel/exit.c

Signed-off-by: Mikael Pettersson <mikpe@csd.uu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 25-akpm/arch/i386/kernel/process.c   |    2 +-
 25-akpm/arch/ppc/kernel/process.c    |    2 +-
 25-akpm/arch/x86_64/kernel/process.c |    2 +-
 25-akpm/kernel/exit.c                |    2 ++
 4 files changed, 5 insertions(+), 3 deletions(-)

diff -puN arch/i386/kernel/process.c~perfctr-inheritance-2-3-kernel-updates arch/i386/kernel/process.c
--- 25/arch/i386/kernel/process.c~perfctr-inheritance-2-3-kernel-updates	2004-10-21 14:54:27.529738336 -0700
+++ 25-akpm/arch/i386/kernel/process.c	2004-10-21 14:54:27.536737272 -0700
@@ -379,7 +379,7 @@ int copy_thread(int nr, unsigned long cl
 	savesegment(fs,p->thread.fs);
 	savesegment(gs,p->thread.gs);
 
-	perfctr_copy_thread(&p->thread);
+	perfctr_copy_task(p, regs);
 
 	tsk = current;
 	if (unlikely(NULL != tsk->thread.io_bitmap_ptr)) {
diff -puN arch/ppc/kernel/process.c~perfctr-inheritance-2-3-kernel-updates arch/ppc/kernel/process.c
--- 25/arch/ppc/kernel/process.c~perfctr-inheritance-2-3-kernel-updates	2004-10-21 14:54:27.530738184 -0700
+++ 25-akpm/arch/ppc/kernel/process.c	2004-10-21 14:54:27.537737120 -0700
@@ -462,7 +462,7 @@ copy_thread(int nr, unsigned long clone_
 
 	p->thread.last_syscall = -1;
 
-	perfctr_copy_thread(&p->thread);
+	perfctr_copy_task(p, regs);
 
 	return 0;
 }
diff -puN arch/x86_64/kernel/process.c~perfctr-inheritance-2-3-kernel-updates arch/x86_64/kernel/process.c
--- 25/arch/x86_64/kernel/process.c~perfctr-inheritance-2-3-kernel-updates	2004-10-21 14:54:27.531738032 -0700
+++ 25-akpm/arch/x86_64/kernel/process.c	2004-10-21 14:54:27.538736968 -0700
@@ -376,7 +376,7 @@ int copy_thread(int nr, unsigned long cl
 	asm("movl %%es,%0" : "=m" (p->thread.es));
 	asm("movl %%ds,%0" : "=m" (p->thread.ds));
 
-	perfctr_copy_thread(&p->thread);
+	perfctr_copy_task(p, regs);
 
 	if (unlikely(me->thread.io_bitmap_ptr != NULL)) { 
 		p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
diff -puN kernel/exit.c~perfctr-inheritance-2-3-kernel-updates kernel/exit.c
--- 25/kernel/exit.c~perfctr-inheritance-2-3-kernel-updates	2004-10-21 14:54:27.533737728 -0700
+++ 25-akpm/kernel/exit.c	2004-10-21 14:54:27.539736816 -0700
@@ -25,6 +25,7 @@
 #include <linux/mount.h>
 #include <linux/proc_fs.h>
 #include <linux/mempolicy.h>
+#include <linux/perfctr.h>
 #include <linux/syscalls.h>
 
 #include <asm/uaccess.h>
@@ -91,6 +92,7 @@ repeat: 
 		zap_leader = (leader->exit_signal == -1);
 	}
 
+	perfctr_release_task(p);
 	sched_exit(p);
 	write_unlock_irq(&tasklist_lock);
 	spin_unlock(&p->proc_lock);
_