The patch titled
sgi-gru: macro for scanning all gru chiplets
has been added to the -mm tree. Its filename is
sgi-gru-macro-for-scanning-all-gru-chiplets.patch
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------------------------------------------------------
Subject: sgi-gru: macro for scanning all gru chiplets
From: Jack Steiner <steiner@xxxxxxx>
Add macro for scanning all active GRU chiplets. Maximum chiplet id is
saved during GRU initialization.
Signed-off-by: Jack Steiner <steiner@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/misc/sgi-gru/grufault.c | 11 ++---------
drivers/misc/sgi-gru/grufile.c | 3 +++
drivers/misc/sgi-gru/gruprocfs.c | 4 ++--
drivers/misc/sgi-gru/grutables.h | 9 +++++++--
4 files changed, 14 insertions(+), 13 deletions(-)
diff -puN drivers/misc/sgi-gru/grufault.c~sgi-gru-macro-for-scanning-all-gru-chiplets drivers/misc/sgi-gru/grufault.c
--- a/drivers/misc/sgi-gru/grufault.c~sgi-gru-macro-for-scanning-all-gru-chiplets
+++ a/drivers/misc/sgi-gru/grufault.c
@@ -600,18 +600,11 @@ static int gru_unload_all_contexts(void)
{
struct gru_thread_state *gts;
struct gru_state *gru;
- int maxgid, gid, ctxnum;
- int nodesperblade;
+ int gid, ctxnum;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- if (num_online_nodes() > 1 &&
- (uv_node_to_blade_id(1) == uv_node_to_blade_id(0)))
- nodesperblade = 2;
- else
- nodesperblade = 1;
- maxgid = GRU_CHIPLETS_PER_BLADE * num_online_nodes() / nodesperblade;
- for (gid = 0; gid < maxgid; gid++) {
+ foreach_gid(gid) {
gru = GID_TO_GRU(gid);
spin_lock(&gru->gs_lock);
for (ctxnum = 0; ctxnum < GRU_NUM_CCH; ctxnum++) {
diff -puN drivers/misc/sgi-gru/grufile.c~sgi-gru-macro-for-scanning-all-gru-chiplets drivers/misc/sgi-gru/grufile.c
--- a/drivers/misc/sgi-gru/grufile.c~sgi-gru-macro-for-scanning-all-gru-chiplets
+++ a/drivers/misc/sgi-gru/grufile.c
@@ -59,6 +59,7 @@
struct gru_blade_state *gru_base[GRU_MAX_BLADES] __read_mostly;
unsigned long gru_start_paddr __read_mostly;
unsigned long gru_end_paddr __read_mostly;
+unsigned int gru_max_gids __read_mostly;
struct gru_stats_s gru_stats;
/* Guaranteed user available resources on each node */
@@ -288,6 +289,8 @@ static void gru_init_chiplet(struct gru_
gru->gs_dsr_map = (1UL << GRU_DSR_AU) - 1;
gru->gs_asid_limit = MAX_ASID;
gru_tgh_flush_init(gru);
+ if (gru->gs_gid >= gru_max_gids)
+ gru_max_gids = gru->gs_gid + 1;
gru_dbg(grudev, "bid %d, nid %d, gid %d, vaddr %p (0x%lx)\n",
bid, nid, gru->gs_gid, gru->gs_gru_base_vaddr,
gru->gs_gru_base_paddr);
diff -puN drivers/misc/sgi-gru/gruprocfs.c~sgi-gru-macro-for-scanning-all-gru-chiplets drivers/misc/sgi-gru/gruprocfs.c
--- a/drivers/misc/sgi-gru/gruprocfs.c~sgi-gru-macro-for-scanning-all-gru-chiplets
+++ a/drivers/misc/sgi-gru/gruprocfs.c
@@ -226,7 +226,7 @@ static void seq_stop(struct seq_file *fi
static void *seq_start(struct seq_file *file, loff_t *gid)
{
- if (*gid < GRU_MAX_GRUS)
+ if (*gid < gru_max_gids)
return gid;
return NULL;
}
@@ -234,7 +234,7 @@ static void *seq_start(struct seq_file *
static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
{
(*gid)++;
- if (*gid < GRU_MAX_GRUS)
+ if (*gid < gru_max_gids)
return gid;
return NULL;
}
diff -puN drivers/misc/sgi-gru/grutables.h~sgi-gru-macro-for-scanning-all-gru-chiplets drivers/misc/sgi-gru/grutables.h
--- a/drivers/misc/sgi-gru/grutables.h~sgi-gru-macro-for-scanning-all-gru-chiplets
+++ a/drivers/misc/sgi-gru/grutables.h
@@ -153,6 +153,7 @@
extern struct gru_stats_s gru_stats;
extern struct gru_blade_state *gru_base[];
extern unsigned long gru_start_paddr, gru_end_paddr;
+extern unsigned int gru_max_gids;
#define GRU_MAX_BLADES MAX_NUMNODES
#define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE)
@@ -406,12 +407,12 @@ struct gru_state {
gru segments (64) */
void *gs_gru_base_vaddr; /* Virtual address of
gru segments (64) */
- unsigned char gs_gid; /* unique GRU number */
+ unsigned short gs_gid; /* unique GRU number */
+ unsigned short gs_blade_id; /* blade of GRU */
unsigned char gs_tgh_local_shift; /* used to pick TGH for
local flush */
unsigned char gs_tgh_first_remote; /* starting TGH# for
remote flush */
- unsigned short gs_blade_id; /* blade of GRU */
spinlock_t gs_asid_lock; /* lock used for
assigning asids */
spinlock_t gs_lock; /* lock used for
@@ -506,6 +507,10 @@ struct gru_blade_state {
(i) < GRU_CHIPLETS_PER_BLADE; \
(i)++, (gru)++)
+/* Scan all GRUs */
+#define foreach_gid(gid) \
+ for ((gid) = 0; (gid) < gru_max_gids; (gid)++)
+
/* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */
#define for_each_gts_on_gru(gts, gru, ctxnum) \
for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \
_
Patches currently in -mm which might be from steiner@xxxxxxx are
sgi-gru-add-definitions-of-x86_64-gru-mmrs.patch
sgi-gru-add-definitions-of-ia64-gru-mmrs.patch
sgi-gru-add-macros-for-using-the-uv-hub-to-send-interrupts.patch
sgi-gru-misc-gru-cleanup.patch
sgi-gru-improvements-to-gru-debug-messages-statistics.patch
sgi-gru-change-gru-cch-commands-from-inline-functions-to-outofline-functions.patch
sgi-gru-add-statistics-to-the-gru-context-management-functions.patch
sgi-gru-add-support-for-a-user-to-explicitly-unload-a-gru-context.patch
sgi-gru-asid-context-management-bug-fixes.patch
sgi-gru-restructure-the-gru-vtop-functions.patch
sgi-gru-add-support-to-the-gru-driver-for-message-queue-interrupts.patch
sgi-gru-macro-for-scanning-all-gru-chiplets.patch
sgi-gru-fix-bugs-related-to-module-unload-of-the-gru-driver.patch
sgi-gru-support-multiple-pagesizes-in-gru.patch
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