Author: nwhitehorn
Date: Wed Oct  2 20:40:21 2013
New Revision: 256007
URL: http://svnweb.freebsd.org/changeset/base/256007

Log:
  Implement GET_STACK_USAGE() on PowerPC. This implementation is identical
  to that on x86 and sparc64.
  
  Approved by:  re (kib)

Modified:
  head/sys/powerpc/include/proc.h

Modified: head/sys/powerpc/include/proc.h
==============================================================================
--- head/sys/powerpc/include/proc.h     Wed Oct  2 19:23:02 2013        
(r256006)
+++ head/sys/powerpc/include/proc.h     Wed Oct  2 20:40:21 2013        
(r256007)
@@ -54,6 +54,18 @@ struct mdproc {
 #endif
 
 #ifdef _KERNEL
+
+#include <machine/pcb.h>
+
+/* Get the current kernel thread stack usage. */
+#define        GET_STACK_USAGE(total, used) do {                               
\
+       struct thread *td = curthread;                                  \
+       (total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb); \
+       (used) = (char *)td->td_kstack +                                \
+           td->td_kstack_pages * PAGE_SIZE -                           \
+           (char *)&td;                                                \
+} while (0)
+
 struct syscall_args {
        u_int code;
        struct sysent *callp;
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