lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sgi-xp: support runtime selection of xp_max_npartitions

Browse Source 
Support runtime selection of the max number of partitions based on the
hardware being run on.

Signed-off-by: Dean Nelson <dcn@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:
Dean Nelson
2008-07-29 22:34:04 -07:00
committed by Linus Torvalds
parent 78ce1bbe44
commit bc63d387e4
10 changed files with 266 additions and 151 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/misc/sgi-xp/xpc_partition.c
View File

@@ -51,13 +51,7 @@ struct xpc_vars_part *xpc_vars_part;
static int xp_nasid_mask_bytes; /* actual size in bytes of nasid mask */
static int xp_nasid_mask_words; /* actual size in words of nasid mask */
/*
* For performance reasons, each entry of xpc_partitions[] is cacheline
* aligned. And xpc_partitions[] is padded with an additional entry at the
* end so that the last legitimate entry doesn't share its cacheline with
* another variable.
*/
struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
struct xpc_partition *xpc_partitions;
/*
* Generic buffer used to store a local copy of portions of a remote
@@ -261,7 +255,7 @@ xpc_rsvd_page_init(void)
/* clear xpc_vars_part */
memset((u64 *)xpc_vars_part, 0, sizeof(struct xpc_vars_part) *
XP_MAX_PARTITIONS);
xp_max_npartitions);
/* initialize the activate IRQ related AMO variables */
for (i = 0; i < xp_nasid_mask_words; i++)
@@ -408,7 +402,7 @@ xpc_check_remote_hb(void)
remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
for (partid = 0; partid < xp_max_npartitions; partid++) {
if (xpc_exiting)
break;
@@ -487,10 +481,8 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
/* check that the partid is for another partition */
if (remote_rp->partid < 1 ||
remote_rp->partid > (XP_MAX_PARTITIONS - 1)) {
if (remote_rp->partid < 0 || remote_rp->partid >= xp_max_npartitions)
return xpInvalidPartid;
}
if (remote_rp->partid == sn_partition_id)
return xpLocalPartid;