[PATCH for review] [104/145] x86_64: print whether CONFIG_IOMMU_DEBUG is enabled

Andi Kleen
2006-08-10T19:53:48Z

r

From: Muli Ben-Yehuda <muli@il.ibm.com>

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 | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)

Index: linux/arch/x86_64/kernel/pci-calgary.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-calgary.c
+++ linux/arch/x86_64/kernel/pci-calgary.c
@@ -127,15 +127,19 @@ static void tce_cache_blast(struct iommu

/* enable this to stress test the chip's TCE cache */
#ifdef CONFIG_IOMMU_DEBUG
+int debugging __read_mostly = 1;
+
static inline void tce_cache_blast_stress(struct iommu_table *tbl)
{
tce_cache_blast(tbl);
}
-#else
+#else /* debugging is disabled */
+int debugging __read_mostly = 0;
+
static inline void tce_cache_blast_stress(struct iommu_table *tbl)
{
}
-#endif /* BLAST_TCE_CACHE_ON_UNMAP */
+#endif /* CONFIG_IOMMU_DEBUG */

static inline unsigned int num_dma_pages(unsigned long dma, unsigned int dmalen)
{
@@ -944,8 +948,10 @@ void __init detect_calgary(void)
if (calgary_found) {
iommu_detected = 1;
calgary_detected = 1;
- printk(KERN_INFO "PCI-DMA: Calgary IOMMU detected. "
- "TCE table spec is %d.\n", specified_table_size);
+ printk(KERN_INFO "PCI-DMA: Calgary IOMMU detected.\n");
+ printk(KERN_INFO "PCI-DMA: Calgary TCE table spec is %d, "
+ "CONFIG_IOMMU_DEBUG is %s.\n", specified_table_size,
+ debugging ? "enabled" : "disabled");
}
return;