diff options
| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2009-04-09 15:16:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-10 14:21:49 +0200 |
| commit | afd9fceec55225d33be878927056a548c2eef26c (patch) | |
| tree | 0a71688345a2514d66d5741e096791e93fadda64 | |
| parent | x86: cacheinfo: correct return value when cache_disable feature is not active (diff) | |
| download | linux-afd9fceec55225d33be878927056a548c2eef26c.tar.xz linux-afd9fceec55225d33be878927056a548c2eef26c.zip | |
x86: cacheinfo: use cached K8 NB_MISC devices instead of scanning for it
Impact: avoid code duplication
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Langsdorf <mark.langsdorf@amd.com>
LKML-Reference: <20090409131617.GI31527@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/include/asm/k8.h | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/intel_cacheinfo.c | 37 |
2 files changed, 11 insertions, 34 deletions
diff --git a/arch/x86/include/asm/k8.h b/arch/x86/include/asm/k8.h index 54c8cc53b24d..c23b3d171be5 100644 --- a/arch/x86/include/asm/k8.h +++ b/arch/x86/include/asm/k8.h @@ -12,4 +12,12 @@ extern int cache_k8_northbridges(void); extern void k8_flush_garts(void); extern int k8_scan_nodes(unsigned long start, unsigned long end); +#ifdef CONFIG_K8_NB +#define node_to_k8_nb_misc(node) \ + (node < num_k8_northbridges) ? k8_northbridges[node] : NULL +#else +#define node_to_k8_nb_misc(node) NULL +#endif + + #endif /* _ASM_X86_K8_H */ diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 1ab46e05adf0..0cde07153697 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -17,6 +17,7 @@ #include <asm/processor.h> #include <asm/smp.h> +#include <asm/k8.h> #define LVL_1_INST 1 #define LVL_1_DATA 2 @@ -159,14 +160,6 @@ struct _cpuid4_info_regs { unsigned long can_disable; }; -#if defined(CONFIG_PCI) && defined(CONFIG_SYSFS) -static struct pci_device_id k8_nb_id[] = { - { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1103) }, - { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1203) }, - {} -}; -#endif - unsigned short num_cache_leaves; /* AMD doesn't have CPUID4. Emulate it here to report the same @@ -704,30 +697,6 @@ static ssize_t show_type(struct _cpuid4_info *this_leaf, char *buf) #define to_object(k) container_of(k, struct _index_kobject, kobj) #define to_attr(a) container_of(a, struct _cache_attr, attr) -#ifdef CONFIG_PCI -static struct pci_dev *get_k8_northbridge(int node) -{ - struct pci_dev *dev = NULL; - int i; - - for (i = 0; i <= node; i++) { - do { - dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); - if (!dev) - break; - } while (!pci_match_id(&k8_nb_id[0], dev)); - if (!dev) - break; - } - return dev; -} -#else -static struct pci_dev *get_k8_northbridge(int node) -{ - return NULL; -} -#endif - static ssize_t show_cache_disable(struct _cpuid4_info *this_leaf, char *buf) { const struct cpumask *mask = to_cpumask(this_leaf->shared_cpu_map); @@ -739,7 +708,7 @@ static ssize_t show_cache_disable(struct _cpuid4_info *this_leaf, char *buf) if (!this_leaf->can_disable) return sprintf(buf, "Feature not enabled\n"); - dev = get_k8_northbridge(node); + dev = node_to_k8_nb_misc(node); if (!dev) { printk(KERN_ERR "Attempting AMD northbridge operation on a system with no northbridge\n"); return -EINVAL; @@ -783,7 +752,7 @@ store_cache_disable(struct _cpuid4_info *this_leaf, const char *buf, return -EINVAL; val |= 0xc0000000; - dev = get_k8_northbridge(node); + dev = node_to_k8_nb_misc(node); if (!dev) { printk(KERN_ERR "Attempting AMD northbridge operation on a system with no northbridge\n"); return -EINVAL; |