From 4ccf4ae3144360ab9c00d0b53427f43369287bfb Mon Sep 17 00:00:00 2001
From: Muli Ben-Yehuda <muli@il.ibm.com>
Date: Tue, 26 Sep 2006 10:52:33 +0200
Subject: [PATCH] [PATCH] remove tce_cache_blast_stress()
tce_cache_blast_stress was useful during bringup to stress the IOMMU's
cache flushing. Now that we quiesce DMAs on every cache flush, using
_stress() brings the machine down to its knees once you put it under
load. Remove this debug / bringup code that isn't useful anymore
completely.
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
---
arch/x86_64/kernel/pci-calgary.c | 11 -----------
1 file changed, 11 deletions(-)
diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index 7c43cb0f71a3..cd866135e4ef 100644
--- a/arch/x86_64/kernel/pci-calgary.c
+++ b/arch/x86_64/kernel/pci-calgary.c
@@ -129,11 +129,6 @@ static void tce_cache_blast(struct iommu_table *tbl);
#ifdef CONFIG_IOMMU_DEBUG
int debugging __read_mostly = 1;
-static inline void tce_cache_blast_stress(struct iommu_table *tbl)
-{
- tce_cache_blast(tbl);
-}
-
static inline unsigned long verify_bit_range(unsigned long* bitmap,
int expected, unsigned long start, unsigned long end)
{
@@ -153,10 +148,6 @@ static inline unsigned long verify_bit_range(unsigned long* bitmap,
#else /* debugging is disabled */
int debugging __read_mostly = 0;
-static inline void tce_cache_blast_stress(struct iommu_table *tbl)
-{
-}
-
static inline unsigned long verify_bit_range(unsigned long* bitmap,
int expected, unsigned long start, unsigned long end)
{
@@ -289,8 +280,6 @@ static void __iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
}
__clear_bit_string(tbl->it_map, entry, npages);
-
- tce_cache_blast_stress(tbl);
}
static void iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
--
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