From: Muli Ben-Yehuda Date: Tue, 26 Sep 2006 08:52:33 +0000 (+0200) Subject: [PATCH] print whether CONFIG_IOMMU_DEBUG is enabled X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=de684652f34f57cb60d4d78d09139a0e0c5e7b1b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] print whether CONFIG_IOMMU_DEBUG is enabled Signed-off-by: Muli Ben-Yehuda Signed-off-by: Jon Mason Signed-off-by: Andi Kleen --- diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c index caf84e4e4ca9..ebe4e930b64d 100644 --- a/arch/x86_64/kernel/pci-calgary.c +++ b/arch/x86_64/kernel/pci-calgary.c @@ -127,15 +127,19 @@ static void tce_cache_blast(struct iommu_table *tbl); /* 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;