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gru: support instruction completion interrupts

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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>
This commit is contained in:
Jack Steiner
2009-06-17 16:28:25 -07:00
committed by Linus Torvalds
parent 940229b9c0
commit 4a7a17c118
3 changed files with 29 additions and 7 deletions
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5
drivers/misc/sgi-gru/grutables.h
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@@ -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 */