gru: preload tlb for bcopy instructions
Add anticipatory TLB dropins for GRU TLB misses that occur on BCOPY
instructions that copy large amounts of data.
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>
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 76fe298..adaf691d 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -202,6 +202,7 @@
atomic_long_t check_context_retarget_intr;
atomic_long_t check_context_unload;
atomic_long_t tlb_dropin;
+ atomic_long_t tlb_preload_page;
atomic_long_t tlb_dropin_fail_no_asid;
atomic_long_t tlb_dropin_fail_upm;
atomic_long_t tlb_dropin_fail_invalid;
@@ -245,7 +246,8 @@
};
enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
- cchop_deallocate, tghop_invalidate, mcsop_last};
+ cchop_deallocate, tfhop_write_only, tfhop_write_restart,
+ tghop_invalidate, mcsop_last};
struct mcs_op_statistic {
atomic_long_t count;
@@ -335,6 +337,7 @@
long vd_user_options;/* misc user option flags */
int vd_cbr_au_count;
int vd_dsr_au_count;
+ unsigned char vd_tlb_preload_count;
};
/*
@@ -350,6 +353,7 @@
struct gru_state *ts_gru; /* GRU where the context is
loaded */
struct gru_mm_struct *ts_gms; /* asid & ioproc struct */
+ unsigned char ts_tlb_preload_count; /* TLB preload pages */
unsigned long ts_cbr_map; /* map of allocated CBRs */
unsigned long ts_dsr_map; /* map of allocated DATA
resources */
@@ -661,7 +665,8 @@
extern void gru_proc_exit(void);
extern struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma,
- int cbr_au_count, int dsr_au_count, int options, int tsid);
+ int cbr_au_count, int dsr_au_count,
+ unsigned char tlb_preload_count, int options, int tsid);
extern unsigned long gru_reserve_cb_resources(struct gru_state *gru,
int cbr_au_count, char *cbmap);
extern unsigned long gru_reserve_ds_resources(struct gru_state *gru,