gru: change context load and unload

Remove "static" from the functions for loading/unloading GRU contexts.
These functions will be called from other GRU files.  Fix bug in unlocking
gru context.

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>

3 files changed, 11 insertions, 7 deletions

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 4089f862aa29..f15152165a99 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -558,8 +558,8 @@ int gru_handle_user_call_os(unsigned long cb)
          * CCH may contain stale data if ts_force_cch_reload is set.
          */
         if (gts->ts_gru && gts->ts_force_cch_reload) {
-                gru_update_cch(gts, 0);
                 gts->ts_force_cch_reload = 0;
+                gru_update_cch(gts, 0);
         }
 
         ret = -EAGAIN;
@@ -644,7 +644,7 @@ static int gru_unload_all_contexts(void)
                         if (gts && mutex_trylock(&gts->ts_ctxlock)) {
                                 spin_unlock(&gru->gs_lock);
                                 gru_unload_context(gts, 1);
-                                gru_unlock_gts(gts);
+                                mutex_unlock(&gts->ts_ctxlock);
                                 spin_lock(&gru->gs_lock);
                         }
                 }
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 14baabc79da4..6358244f392d 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -533,7 +533,7 @@ void gru_unload_context(struct gru_thread_state *gts, int savestate)
  * Load a GRU context by copying it from the thread data structure in memory
  * to the GRU.
  */
-static void gru_load_context(struct gru_thread_state *gts)
+void gru_load_context(struct gru_thread_state *gts)
 {
         struct gru_state *gru = gts->ts_gru;
         struct gru_context_configuration_handle *cch;
@@ -600,8 +600,8 @@ int gru_update_cch(struct gru_thread_state *gts, int force_unload)
                         gts->ts_tlb_int_select = gru_cpu_fault_map_id();
                         cch->tlb_int_select = gru_cpu_fault_map_id();
                         cch->tfm_fault_bit_enable =
-                            (gts->ts_user_options == GRU_OPT_MISS_FMM_POLL
-                            || gts->ts_user_options == GRU_OPT_MISS_FMM_INTR);
+                                (gts->ts_user_options == GRU_OPT_MISS_FMM_POLL
+                                || gts->ts_user_options == GRU_OPT_MISS_FMM_INTR);
                 } else {
                         for (i = 0; i < 8; i++)
                                 cch->asid[i] = 0;
@@ -645,7 +645,7 @@ static int gru_retarget_intr(struct gru_thread_state *gts)
 #define next_gru(b, g)  (((g) < &(b)->bs_grus[GRU_CHIPLETS_PER_BLADE - 1]) ?  \
                                  ((g)+1) : &(b)->bs_grus[0])
 
-static void gru_steal_context(struct gru_thread_state *gts, int blade_id)
+void gru_steal_context(struct gru_thread_state *gts, int blade_id)
 {
         struct gru_blade_state *blade;
         struct gru_state *gru, *gru0;
@@ -711,7 +711,7 @@ static void gru_steal_context(struct gru_thread_state *gts, int blade_id)
 /*
  * Scan the GRUs on the local blade & assign a GRU context.
  */
-static struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts,
+struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts,
                                                 int blade)
 {
         struct gru_state *gru, *grux;
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index c69086c9b986..4ddb5b92acbb 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -611,6 +611,10 @@ 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 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_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);