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Koen Kooi
ebbeb55561
Also add script used to generate patches and SRC_URI Signed-off-by: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Denys Dmytriyenko <denys@ti.com>
59 lines
1.9 KiB
Diff
59 lines
1.9 KiB
Diff
From 9879a44c57c58034844a11551c81fd05b3341c1a Mon Sep 17 00:00:00 2001
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From: Cliff Wickman <cpw@sgi.com>
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Date: Wed, 18 Jan 2012 09:40:47 -0600
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Subject: [PATCH 23/90] x86/uv: Fix uninitialized spinlocks
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commit d2ebc71d472020bc30e29afe8c4d2a85a5b41f56 upstream.
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Initialize two spinlocks in tlb_uv.c and also properly define/initialize
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the uv_irq_lock.
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The lack of explicit initialization seems to be functionally
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harmless, but it is diagnosed when these are turned on:
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CONFIG_DEBUG_SPINLOCK=y
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CONFIG_DEBUG_MUTEXES=y
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CONFIG_DEBUG_LOCK_ALLOC=y
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CONFIG_LOCKDEP=y
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Signed-off-by: Cliff Wickman <cpw@sgi.com>
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Cc: Dimitri Sivanich <sivanich@sgi.com>
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Link: http://lkml.kernel.org/r/E1RnXd1-0003wU-PM@eag09.americas.sgi.com
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[ Added the uv_irq_lock initialization fix by Dimitri Sivanich ]
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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arch/x86/platform/uv/tlb_uv.c | 2 ++
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arch/x86/platform/uv/uv_irq.c | 2 +-
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2 files changed, 3 insertions(+), 1 deletion(-)
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diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
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index 9010ca7..81aee5a 100644
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--- a/arch/x86/platform/uv/tlb_uv.c
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+++ b/arch/x86/platform/uv/tlb_uv.c
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@@ -1860,6 +1860,8 @@ static void __init init_per_cpu_tunables(void)
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bcp->cong_reps = congested_reps;
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bcp->cong_period = congested_period;
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bcp->clocks_per_100_usec = usec_2_cycles(100);
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+ spin_lock_init(&bcp->queue_lock);
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+ spin_lock_init(&bcp->uvhub_lock);
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}
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}
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diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c
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index 374a05d..f25c276 100644
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--- a/arch/x86/platform/uv/uv_irq.c
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+++ b/arch/x86/platform/uv/uv_irq.c
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@@ -25,7 +25,7 @@ struct uv_irq_2_mmr_pnode{
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int irq;
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};
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-static spinlock_t uv_irq_lock;
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+static DEFINE_SPINLOCK(uv_irq_lock);
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static struct rb_root uv_irq_root;
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static int uv_set_irq_affinity(struct irq_data *, const struct cpumask *, bool);
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--
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1.7.9.4
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