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Subject[Patch 19/25] GRU - update debug messages and comments
From: Jack Steiner <steiner@sgi.com>

Misc clean:
- update debug messages
- update stale comments in the code


Signed-off-by: Jack Steiner <steiner@sgi.com>

---
drivers/misc/sgi-gru/grufault.c | 1 -
drivers/misc/sgi-gru/grukservices.h | 3 +--
drivers/misc/sgi-gru/grulib.h | 1 -
drivers/misc/sgi-gru/grumain.c | 26 +++++++++++++-------------
drivers/misc/sgi-gru/grutlbpurge.c | 1 -
5 files changed, 14 insertions(+), 18 deletions(-)
Index: linux/drivers/misc/sgi-gru/grufault.c
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grufault.c 2010-06-09 08:11:45.803958078 -0500
+++ linux/drivers/misc/sgi-gru/grufault.c 2010-06-09 08:11:47.573040296 -0500
@@ -209,7 +209,6 @@ static int non_atomic_pte_lookup(struct
*
* Convert a user virtual address to a physical address
* Only supports Intel large pages (2MB only) on x86_64.
- * ZZZ - hugepage support is incomplete
*
* NOTE: mmap_sem is already held on entry to this function. This
* guarantees existence of the page tables.
Index: linux/drivers/misc/sgi-gru/grukservices.h
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grukservices.h 2010-06-09 08:11:30.008045922 -0500
+++ linux/drivers/misc/sgi-gru/grukservices.h 2010-06-09 08:11:47.573040296 -0500
@@ -36,9 +36,8 @@
* - multiple senders
* - cross partition message
*
- * Missing features ZZZ:
+ * Missing features:
* - user options for dealing with timeouts, queue full, etc.
- * - gru_create_message_queue() needs interrupt vector info
*/

struct gru_message_queue_desc {
Index: linux/drivers/misc/sgi-gru/grulib.h
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grulib.h 2010-06-09 08:11:45.407956625 -0500
+++ linux/drivers/misc/sgi-gru/grulib.h 2010-06-09 08:11:47.593081003 -0500
@@ -25,7 +25,6 @@

/*
* Maximum number of GRU segments that a user can have open
- * ZZZ temp - set high for testing. Revisit.
*/
#define GRU_MAX_OPEN_CONTEXTS 32

Index: linux/drivers/misc/sgi-gru/grumain.c
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grumain.c 2010-06-09 08:11:46.261068458 -0500
+++ linux/drivers/misc/sgi-gru/grumain.c 2010-06-09 08:11:47.621041821 -0500
@@ -265,7 +265,7 @@ static int gru_load_mm_tracker(struct gr
spin_unlock(&gms->ms_asid_lock);

gru_dbg(grudev,
- "gid %d, gts %p, gms %p, ctxnum %d, asid 0x%x, asidmap 0x%lx\n",
+ "gid %d, gts 0x%p, gms %p, ctxnum %d, asid 0x%x, asidmap 0x%lx\n",
gru->gs_gid, gts, gms, gts->ts_ctxnum, asid,
gms->ms_asidmap[0]);
return asid;
@@ -284,7 +284,7 @@ static void gru_unload_mm_tracker(struct
spin_lock(&gru->gs_asid_lock);
BUG_ON((asids->mt_ctxbitmap & ctxbitmap) != ctxbitmap);
asids->mt_ctxbitmap ^= ctxbitmap;
- gru_dbg(grudev, "gid %d, gts %p, gms %p, ctxnum 0x%d, asidmap 0x%lx\n",
+ gru_dbg(grudev, "gid %d, gts 0x%p, gms %p, ctxnum 0x%d, asidmap 0x%lx\n",
gru->gs_gid, gts, gms, gts->ts_ctxnum, gms->ms_asidmap[0]);
spin_unlock(&gru->gs_asid_lock);
spin_unlock(&gms->ms_asid_lock);
@@ -350,12 +350,12 @@ struct gru_thread_state *gru_alloc_gts(s
if (vma) {
struct gru_vma_data *vdata = vma->vm_private_data;

- gts->ts_gms = vdata->vd_gms;;
+ gts->ts_gms = vdata->vd_gms;
gts->ts_mm = current->mm;
gts->ts_vma = vma;
}

- gru_dbg(grudev, "alloc gts %p\n", gts);
+ gru_dbg(grudev, "alloc gts 0x%p\n", gts);
return gts;
}

@@ -399,7 +399,7 @@ struct gru_thread_state *gru_find_thread
spin_lock(&vdata->vd_lock);
gts = gru_find_current_gts_nolock(vdata, tsid);
spin_unlock(&vdata->vd_lock);
- gru_dbg(grudev, "vma %p, gts %p\n", vma, gts);
+ gru_dbg(grudev, "vma %p, gts 0x%p\n", vma, gts);
return gts;
}

@@ -430,7 +430,7 @@ struct gru_thread_state *gru_alloc_threa
list_add(&gts->ts_next, &vdata->vd_head);
}
spin_unlock(&vdata->vd_lock);
- gru_dbg(grudev, "vma %p, gts %p\n", vma, gts);
+ gru_dbg(grudev, "vma %p, gts 0x%p\n", vma, gts);
return gts;
}

@@ -442,7 +442,7 @@ static void gru_free_gru_context(struct
struct gru_state *gru;

gru = gts->ts_gru;
- gru_dbg(grudev, "gts %p, gid %d\n", gts, gru->gs_gid);
+ gru_dbg(grudev, "gts 0x%p, gid %d\n", gts, gru->gs_gid);

spin_lock(&gru->gs_lock);
gru->gs_gts[gts->ts_ctxnum] = NULL;
@@ -565,7 +565,7 @@ void gru_unload_context(struct gru_threa
zap_vma_ptes(gts->ts_vma, UGRUADDR(gts), GRU_GSEG_PAGESIZE);
cch = get_cch(gru->gs_gru_base_vaddr, ctxnum);

- gru_dbg(grudev, "gts %p, cbrmap 0x%lx, dsrmap 0x%lx\n",
+ gru_dbg(grudev, "gts 0x%p, cbrmap 0x%lx, dsrmap 0x%lx\n",
gts, gts->ts_cbr_map, gts->ts_dsr_map);
lock_cch_handle(cch);
if (cch_interrupt_sync(cch))
@@ -633,7 +633,7 @@ void gru_load_context(struct gru_thread_
err = cch_allocate(cch);
if (err) {
gru_dbg(grudev,
- "err %d: cch %p, gts %p, cbr 0x%lx, dsr 0x%lx\n",
+ "err %d: cch %p, gts 0x%p, cbr 0x%lx, dsr 0x%lx\n",
err, cch, gts, gts->ts_cbr_map, gts->ts_dsr_map);
BUG();
}
@@ -645,7 +645,7 @@ void gru_load_context(struct gru_thread_
BUG();
unlock_cch_handle(cch);

- gru_dbg(grudev, "gid %d, gts %p, cbrmap 0x%lx, dsrmap 0x%lx, tie %d, tis %d\n",
+ gru_dbg(grudev, "gid %d, gts 0x%p, cbrmap 0x%lx, dsrmap 0x%lx, tie %d, tis %d\n",
gts->ts_gru->gs_gid, gts, gts->ts_cbr_map, gts->ts_dsr_map,
(gts->ts_user_options == GRU_OPT_MISS_FMM_INTR), gts->ts_tlb_int_select);
}
@@ -851,7 +851,7 @@ void gru_steal_context(struct gru_thread
STAT(steal_context_failed);
}
gru_dbg(grudev,
- "stole gid %d, ctxnum %d from gts %p. Need cb %d, ds %d;"
+ "stole gid %d, ctxnum %d from gts 0x%p. Need cb %d, ds %d;"
" avail cb %ld, ds %ld\n",
gru->gs_gid, ctxnum, ngts, cbr, dsr, hweight64(gru->gs_cbr_map),
hweight64(gru->gs_dsr_map));
@@ -913,8 +913,8 @@ again:

STAT(assign_context);
gru_dbg(grudev,
- "gseg %p, gts %p, gid %d, ctx %d, cbr %d, dsr %d\n",
- gseg_virtual_address(gts->ts_gru, gts->ts_ctxnum), gts,
+ "gseg %p, pid %d, gts 0x%p, gid %d, ctx %d, cbr %d, dsr %d\n",
+ gseg_virtual_address(gts->ts_gru, gts->ts_ctxnum), current->pid, gts,
gts->ts_gru->gs_gid, gts->ts_ctxnum,
gts->ts_cbr_au_count, gts->ts_dsr_au_count);
} else {
Index: linux/drivers/misc/sgi-gru/grutlbpurge.c
===================================================================
--- linux.orig/drivers/misc/sgi-gru/grutlbpurge.c 2010-06-09 08:11:43.772080689 -0500
+++ linux/drivers/misc/sgi-gru/grutlbpurge.c 2010-06-09 08:11:47.645042345 -0500
@@ -162,7 +162,6 @@ void gru_flush_tlb_range(struct gru_mm_s
unsigned long num;
int grupagesize, pagesize, pageshift, gid, asid;

- /* ZZZ TODO - handle huge pages */
pageshift = PAGE_SHIFT;
pagesize = (1UL << pageshift);
grupagesize = GRU_PAGESIZE(pageshift);


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