linux-kernel - [tip:x86/urgent] x86, UV: Update Boot messages for SGI UV2 platform

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Message-ID: <tip-da517a08ac5913cd80ce3507cddd00f2a091b13c@git.kernel.org>
Date:	Sun, 8 Jan 2012 03:51:56 -0800
From:	tip-bot for Jack Steiner <steiner@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	steiner@....com, stable@...nel.org, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:x86/urgent] x86, UV:
  Update Boot messages for SGI UV2 platform

Commit-ID:  da517a08ac5913cd80ce3507cddd00f2a091b13c
Gitweb:     http://git.kernel.org/tip/da517a08ac5913cd80ce3507cddd00f2a091b13c
Author:     Jack Steiner <steiner@....com>
AuthorDate: Fri, 6 Jan 2012 13:19:00 -0600
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 8 Jan 2012 12:35:44 +0100

x86, UV: Update Boot messages for SGI UV2 platform

SGI UV systems print a message during boot:

	UV: Found <num> blades

Due to packaging changes, the blade count is not accurate for
on the next generation of the platform. This patch corrects the
count.

Signed-off-by: Jack Steiner <steiner@....com>
Cc: <stable@...nel.org>
Link: http://lkml.kernel.org/r/20120106191900.GA19772@sgi.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/apic/x2apic_uv_x.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 9d59bba..79b05b8 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -769,7 +769,12 @@ void __init uv_system_init(void)
 	for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
 		uv_possible_blades +=
 		  hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE + i * 8));
-	printk(KERN_DEBUG "UV: Found %d blades\n", uv_num_possible_blades());
+
+	/* uv_num_possible_blades() is really the hub count */
+	printk(KERN_INFO "UV: Found %d blades, %d hubs\n",
+			is_uv1_hub() ? uv_num_possible_blades() :
+			(uv_num_possible_blades() + 1) / 2,
+			uv_num_possible_blades());
 
 	bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
 	uv_blade_info = kzalloc(bytes, GFP_KERNEL);
--
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