From b1b19fcfa417cf62447413d6e8b9b6598adf00b9 Mon Sep 17 00:00:00 2001
From: Jack Steiner <steiner@sgi.com>
Date: Wed, 17 Jun 2009 16:28:33 -0700
Subject: [PATCH] gru: add user request to specify gru slice
Add a user request to specify the gru instruction slice parameter for user
contexts.
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>
---
drivers/misc/sgi-gru/grufault.c | 4 ++++
drivers/misc/sgi-gru/grulib.h | 2 +-
drivers/misc/sgi-gru/grumain.c | 7 +++++++
drivers/misc/sgi-gru/grutables.h | 1 +
4 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index b894b7ed9c351..1ad360cd31832 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -769,6 +769,10 @@ int gru_set_context_option(unsigned long arg)
/* Register the current task as the GSEG owner */
gts->ts_tgid_owner = current->tgid;
break;
+ case sco_cch_req_slice:
+ /* Set the CCH slice option */
+ gts->ts_cch_req_slice = req.val1 & 3;
+ break;
default:
ret = -EINVAL;
}
diff --git a/drivers/misc/sgi-gru/grulib.h b/drivers/misc/sgi-gru/grulib.h
index 8615b904a7c76..a484a9fee3ce0 100644
--- a/drivers/misc/sgi-gru/grulib.h
+++ b/drivers/misc/sgi-gru/grulib.h
@@ -98,7 +98,7 @@ struct gru_unload_context_req {
/*
* Structure used to set context options
*/
-enum {sco_gseg_owner};
+enum {sco_gseg_owner, sco_cch_req_slice};
struct gru_set_context_option_req {
unsigned long gseg;
int op;
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 347004e4f591c..0c20be007b209 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -321,6 +321,7 @@ struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma,
gts->ts_tsid = tsid;
gts->ts_ctxnum = NULLCTX;
gts->ts_tlb_int_select = -1;
+ gts->ts_cch_req_slice = -1;
gts->ts_sizeavail = GRU_SIZEAVAIL(PAGE_SHIFT);
if (vma) {
gts->ts_mm = current->mm;
@@ -566,6 +567,12 @@ void gru_load_context(struct gru_thread_state *gts)
gts->ts_tlb_int_select = gru_cpu_fault_map_id();
cch->tlb_int_select = gts->ts_tlb_int_select;
}
+ if (gts->ts_cch_req_slice >= 0) {
+ cch->req_slice_set_enable = 1;
+ cch->req_slice = gts->ts_cch_req_slice;
+ } else {
+ cch->req_slice_set_enable =0;
+ }
cch->tfm_done_bit_enable = 0;
cch->dsr_allocation_map = gts->ts_dsr_map;
cch->cbr_allocation_map = gts->ts_cbr_map;
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index ee2f4121db211..34ab3d4539193 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -380,6 +380,7 @@ struct gru_thread_state {
required for contest */
unsigned char ts_cbr_au_count;/* Number of CBR resources
required for contest */
+ char ts_cch_req_slice;/* CCH packet slice */
char ts_blade; /* If >= 0, migrate context if
ref from diferent blade */
char ts_force_cch_reload;
--
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