gru: generic infrastructure for context options

Change the user GRU request for specifying the "task_slice" option to use
a generic infrastructure that can be expanded in the future to include
additional context options.  No new capabilities are added with this
patch.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/misc/sgi-gru/grulib.h b/drivers/misc/sgi-gru/grulib.h
index 8ed6acbc47c7..8615b904a7c7 100644
--- a/drivers/misc/sgi-gru/grulib.h
+++ b/drivers/misc/sgi-gru/grulib.h
@@ -32,8 +32,8 @@
 /* Set Number of Request Blocks */
 #define GRU_CREATE_CONTEXT              _IOWR(GRU_IOCTL_NUM, 1, void *)
 
-/* Register task as using the slice */
-#define GRU_SET_TASK_SLICE              _IOWR(GRU_IOCTL_NUM, 5, void *)
+/*  Set Context Options */
+#define GRU_SET_CONTEXT_OPTION          _IOWR(GRU_IOCTL_NUM, 4, void *)
 
 /* Fetch exception detail */
 #define GRU_USER_GET_EXCEPTION_DETAIL   _IOWR(GRU_IOCTL_NUM, 6, void *)
@@ -96,6 +96,16 @@ struct gru_unload_context_req {
 };
 
 /*
+ * Structure used to set context options
+ */
+enum {sco_gseg_owner};
+struct gru_set_context_option_req {
+        unsigned long   gseg;
+        int             op;
+        unsigned long   val1;
+};
+
+/*
  * Structure used to pass TLB flush parameters to the driver
  */
 struct gru_flush_tlb_req {