gru: support instruction completion interrupts

Add support for interrupts generated by GRU instruction completion.
Previously, the only interrupts were for TLB misses.  The hardware also
supports interrupts on instruction completion.  This will be supported for
instructions issued by the kernel.

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, 5 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 5f8f3bda2fa9..ca81800146ff 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -462,6 +462,11 @@ struct gru_blade_state {
         struct rw_semaphore     bs_kgts_sema;           /* lock for kgts */
         struct gru_thread_state *bs_kgts;               /* GTS for kernel use */
 
+        /* ---- the following are used for managing kernel async GRU CBRs --- */
+        int                     bs_async_dsr_bytes;     /* DSRs for async */
+        int                     bs_async_cbrs;          /* CBRs AU for async */
+        struct completion       *bs_async_wq;
+
         /* ---- the following are protected by the bs_lock spinlock ---- */
         spinlock_t              bs_lock;                /* lock used for
                                                            stealing contexts */