linux-kernel - [PATCH 3/8 v3] x86, UV: allow for non-consecutive sockets

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Message-Id: <E1QXBUZ-0004gE-UY@eag09.americas.sgi.com>
Date:	Thu, 16 Jun 2011 07:16:11 -0500
From:	Cliff Wickman <cpw@....com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu
Subject: [PATCH 3/8 v3] x86, UV: allow for non-consecutive sockets

From: Cliff Wickman <cpw@....com>

Fix for the theoretical case in which there is a socket 1 on a blade
with no socket 0.
Only call make_per_cpu_thp() for present sockets.

We have only seen this fail for internal configurations.

Diffed against 3.0.0-rc3

Signed-off-by: Cliff Wickman <cpw@....com>
---
 arch/x86/platform/uv/tlb_uv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86/platform/uv/tlb_uv.c
===================================================================
--- linux.orig/arch/x86/platform/uv/tlb_uv.c
+++ linux/arch/x86/platform/uv/tlb_uv.c
@@ -1752,10 +1752,10 @@ static int __init summarize_uvhub_socket
 				sdp = &bdp->socket[socket];
 				if (scan_sock(sdp, bdp, &smaster, &hmaster))
 					return 1;
+				make_per_cpu_thp(smaster);
 			}
 			socket++;
 			socket_mask = (socket_mask >> 1);
-			make_per_cpu_thp(smaster);
 		}
 	}
 	return 0;
--
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