linux-kernel - [tip:x86/uv] x86, UV: Allow for non-consecutive sockets

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Message-ID: <tip-9c9153db22870c3f37add83bea30500fcc268a73@git.kernel.org>
Date:	Tue, 21 Jun 2011 15:17:10 GMT
From:	"tip-bot for cpw@....com" <cpw@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	cpw@....com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:x86/uv] x86, UV: Allow for non-consecutive sockets

Commit-ID:  9c9153db22870c3f37add83bea30500fcc268a73
Gitweb:     http://git.kernel.org/tip/9c9153db22870c3f37add83bea30500fcc268a73
Author:     cpw@....com <cpw@....com>
AuthorDate: Tue, 21 Jun 2011 07:21:28 -0500
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 21 Jun 2011 14:50:32 +0200

x86, UV: Allow for non-consecutive sockets

Fix for the topology 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.

Signed-off-by: Cliff Wickman <cpw@....com>
Link: http://lkml.kernel.org/r/20110621122242.363757364@sgi.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/platform/uv/tlb_uv.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 34be650..7623b08 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1752,10 +1752,10 @@ static int __init summarize_uvhub_sockets(int nuvhubs,
 				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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