gru: add user request to specify gru slice

Add a user request to specify the gru instruction slice parameter for user
contexts.

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, 4 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index b894b7ed9c35..1ad360cd3183 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -769,6 +769,10 @@ int gru_set_context_option(unsigned long arg)
                 /* Register the current task as the GSEG owner */
                 gts->ts_tgid_owner = current->tgid;
                 break;
+        case sco_cch_req_slice:
+                /* Set the CCH slice option */
+                gts->ts_cch_req_slice = req.val1 & 3;
+                break;
         default:
                 ret = -EINVAL;
         }