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sgi-gru: macro for scanning all gru chiplets

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Add macro for scanning all active GRU chiplets.  Maximum chiplet id is
saved during GRU initialization.

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>
This commit is contained in:
Jack Steiner 2009-04-02 16:59:10 -07:00 committed by Linus Torvalds
parent 6f2584f474
commit e1c3219d06
4 changed files with 14 additions and 13 deletions
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11
drivers/misc/sgi-gru/grufault.c
View file

@ -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++) {

3
drivers/misc/sgi-gru/grufile.c
View file

@ -47,6 +47,7 @@
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 */
@ -276,6 +277,8 @@ static void gru_init_chiplet(struct gru_state *gru, unsigned long paddr,
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);

4
drivers/misc/sgi-gru/gruprocfs.c
View file

@ -226,7 +226,7 @@ static void seq_stop(struct seq_file *file, void *data)
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 *file, loff_t *gid)
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;
}

9
drivers/misc/sgi-gru/grutables.h
View file

@ -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)++) \