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authorRobin Holt <holt@sgi.com>2009-12-15 16:47:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 07:20:14 -0800
commitdbd2918ec65c35f36bb102c88eafe87be0552f6f (patch)
tree97763c2f9c6b2938e209911a89690794c290f22b
parent15b87d67ff3dc042bee42f991858d6b121b3b3ca (diff)
downloadblackbird-op-linux-dbd2918ec65c35f36bb102c88eafe87be0552f6f.tar.gz
blackbird-op-linux-dbd2918ec65c35f36bb102c88eafe87be0552f6f.zip
X86: uv: xpc_make_first_contact hang due to not accepting ACTIVE state
Many times while the initial connection is being made, the contacted partition will send back both the ACTIVATING and the ACTIVE remote_act_state changes in very close succescion. The 1/4 second delay in the make first contact loop is large enough to nearly always miss the ACTIVATING state change. Since either state indicates the remote partition has acknowledged our state change, accept either. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/misc/sgi-xp/xpc_uv.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 19bd7b0ede91..241ea5f01aaa 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -1024,7 +1024,8 @@ xpc_make_first_contact_uv(struct xpc_partition *part)
xpc_send_activate_IRQ_part_uv(part, &msg, sizeof(msg),
XPC_ACTIVATE_MQ_MSG_SYNC_ACT_STATE_UV);
- while (part->sn.uv.remote_act_state != XPC_P_AS_ACTIVATING) {
+ while (!((part->sn.uv.remote_act_state == XPC_P_AS_ACTIVATING) ||
+ (part->sn.uv.remote_act_state == XPC_P_AS_ACTIVE))) {
dev_dbg(xpc_part, "waiting to make first contact with "
"partition %d\n", XPC_PARTID(part));
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