gru: allow users to specify gru chiplet 2

Add support to the GRU driver to allow users to specify the blade &
chiplet for allocation of GRU contexts.  Add new statistics for context
loading/unloading/retargeting.  Also deleted a few GRU stats that were no
longer being unused.

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, 6 insertions, 10 deletions

diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 27131fb2253f..8a61a8599bac 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -192,19 +192,14 @@ struct gru_stats_s {
         atomic_long_t intr;
         atomic_long_t intr_mm_lock_failed;
         atomic_long_t call_os;
-        atomic_long_t call_os_offnode_reference;
         atomic_long_t call_os_check_for_bug;
         atomic_long_t call_os_wait_queue;
         atomic_long_t user_flush_tlb;
         atomic_long_t user_unload_context;
         atomic_long_t user_exception;
         atomic_long_t set_context_option;
-        atomic_long_t migrate_check;
-        atomic_long_t migrated_retarget;
-        atomic_long_t migrated_unload;
-        atomic_long_t migrated_unload_delay;
-        atomic_long_t migrated_nopfn_retarget;
-        atomic_long_t migrated_nopfn_unload;
+        atomic_long_t check_context_retarget_intr;
+        atomic_long_t check_context_unload;
         atomic_long_t tlb_dropin;
         atomic_long_t tlb_dropin_fail_no_asid;
         atomic_long_t tlb_dropin_fail_upm;
@@ -425,6 +420,7 @@ struct gru_state {
                                                            gru segments (64) */
         unsigned short          gs_gid;                 /* unique GRU number */
         unsigned short          gs_blade_id;            /* blade of GRU */
+        unsigned char           gs_chiplet_id;          /* blade chiplet of GRU */
         unsigned char           gs_tgh_local_shift;     /* used to pick TGH for
                                                            local flush */
         unsigned char           gs_tgh_first_remote;    /* starting TGH# for
@@ -636,10 +632,9 @@ extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct
                                 *vma, int tsid);
 extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct
                                 *vma, int tsid);
-extern struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts,
-                int blade);
+extern struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts);
 extern void gru_load_context(struct gru_thread_state *gts);
-extern void gru_steal_context(struct gru_thread_state *gts, int blade_id);
+extern void gru_steal_context(struct gru_thread_state *gts);
 extern void gru_unload_context(struct gru_thread_state *gts, int savestate);
 extern int gru_update_cch(struct gru_thread_state *gts, int force_unload);
 extern void gts_drop(struct gru_thread_state *gts);
@@ -654,6 +649,7 @@ extern int gru_user_flush_tlb(unsigned long arg);
 extern int gru_user_unload_context(unsigned long arg);
 extern int gru_get_exception_detail(unsigned long arg);
 extern int gru_set_context_option(unsigned long address);
+extern void gru_check_context_placement(struct gru_thread_state *gts);
 extern int gru_cpu_fault_map_id(void);
 extern struct vm_area_struct *gru_find_vma(unsigned long vaddr);
 extern void gru_flush_all_tlb(struct gru_state *gru);