7 files changed, 16 insertions, 69 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0af5250d914f..7fab7e0b1a72 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -127,6 +127,7 @@ config X86
         select HAVE_DEBUG_STACKOVERFLOW
         select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64
         select HAVE_CC_STACKPROTECTOR
+        select GENERIC_CPU_AUTOPROBE
 
 config INSTRUCTION_DECODER
         def_bool y
@@ -195,9 +196,6 @@ config ARCH_HAS_CPU_RELAX
 config ARCH_HAS_CACHE_LINE_SIZE
         def_bool y
 
-config ARCH_HAS_CPU_AUTOPROBE
-        def_bool y
-
 config HAVE_SETUP_PER_CPU_AREA
         def_bool y
 
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index e099f9502ace..d86dc3deea6a 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -541,6 +541,13 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 #define static_cpu_has_bug(bit) static_cpu_has((bit))
 #define boot_cpu_has_bug(bit)   cpu_has_bug(&boot_cpu_data, (bit))
 
+#define MAX_CPU_FEATURES        (NCAPINTS * 32)
+#define cpu_have_feature        boot_cpu_has
+
+#define CPU_FEATURE_TYPEFMT     "x86,ven%04Xfam%04Xmod%04X"
+#define CPU_FEATURE_TYPEVAL     boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
+                                boot_cpu_data.x86_model
+
 #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
 
 #endif /* _ASM_X86_CPUFEATURE_H */
diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c
index 36565373af87..afa9f0d487ea 100644
--- a/arch/x86/kernel/cpu/match.c
+++ b/arch/x86/kernel/cpu/match.c
@@ -47,45 +47,3 @@ const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
         return NULL;
 }
 EXPORT_SYMBOL(x86_match_cpu);
-
-ssize_t arch_print_cpu_modalias(struct device *dev,
-                                struct device_attribute *attr,
-                                char *bufptr)
-{
-        int size = PAGE_SIZE;
-        int i, n;
-        char *buf = bufptr;
-
-        n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:"
-                     "model:%04X:feature:",
-                boot_cpu_data.x86_vendor,
-                boot_cpu_data.x86,
-                boot_cpu_data.x86_model);
-        size -= n;
-        buf += n;
-        size -= 1;
-        for (i = 0; i < NCAPINTS*32; i++) {
-                if (boot_cpu_has(i)) {
-                        n = snprintf(buf, size, ",%04X", i);
-                        if (n >= size) {
-                                WARN(1, "x86 features overflow page\n");
-                                break;
-                        }
-                        size -= n;
-                        buf += n;
-                }
-        }
-        *buf++ = '\n';
-        return buf - bufptr;
-}
-
-int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
-        char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
-        if (buf) {
-                arch_print_cpu_modalias(NULL, NULL, buf);
-                add_uevent_var(env, "MODALIAS=%s", buf);
-                kfree(buf);
-        }
-        return 0;
-}
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 3f0d3732df7f..8fa8deab6449 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -185,13 +185,8 @@ config GENERIC_CPU_DEVICES
         bool
         default n
 
-config HAVE_CPU_AUTOPROBE
-        def_bool ARCH_HAS_CPU_AUTOPROBE
-
 config GENERIC_CPU_AUTOPROBE
         bool
-        depends on !ARCH_HAS_CPU_AUTOPROBE
-        select HAVE_CPU_AUTOPROBE
 
 config SOC_BUS
         bool
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 8a38bf8c792f..006b1bc5297d 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -287,7 +287,6 @@ static void cpu_device_release(struct device *dev)
          */
 }
 
-#ifdef CONFIG_HAVE_CPU_AUTOPROBE
 #ifdef CONFIG_GENERIC_CPU_AUTOPROBE
 static ssize_t print_cpu_modalias(struct device *dev,
                                   struct device_attribute *attr,
@@ -310,9 +309,6 @@ static ssize_t print_cpu_modalias(struct device *dev,
         buf[n++] = '\n';
         return n;
 }
-#else
-#define print_cpu_modalias      arch_print_cpu_modalias
-#endif
 
 static int cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
@@ -346,7 +342,7 @@ int register_cpu(struct cpu *cpu, int num)
         cpu->dev.offline_disabled = !cpu->hotpluggable;
         cpu->dev.offline = !cpu_online(num);
         cpu->dev.of_node = of_get_cpu_node(num, NULL);
-#ifdef CONFIG_HAVE_CPU_AUTOPROBE
+#ifdef CONFIG_GENERIC_CPU_AUTOPROBE
         cpu->dev.bus->uevent = cpu_uevent;
 #endif
         cpu->dev.groups = common_cpu_attr_groups;
@@ -370,7 +366,7 @@ struct device *get_cpu_device(unsigned cpu)
 }
 EXPORT_SYMBOL_GPL(get_cpu_device);
 
-#ifdef CONFIG_HAVE_CPU_AUTOPROBE
+#ifdef CONFIG_GENERIC_CPU_AUTOPROBE
 static DEVICE_ATTR(modalias, 0444, print_cpu_modalias, NULL);
 #endif
 
@@ -384,7 +380,7 @@ static struct attribute *cpu_root_attrs[] = {
         &cpu_attrs[2].attr.attr,
         &dev_attr_kernel_max.attr,
         &dev_attr_offline.attr,
-#ifdef CONFIG_HAVE_CPU_AUTOPROBE
+#ifdef CONFIG_GENERIC_CPU_AUTOPROBE
         &dev_attr_modalias.attr,
 #endif
         NULL
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 03e235ad1bba..03e962e23eaf 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -46,13 +46,6 @@ extern ssize_t arch_cpu_release(const char *, size_t);
 #endif
 struct notifier_block;
 
-#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
-extern int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env);
-extern ssize_t arch_print_cpu_modalias(struct device *dev,
-                                       struct device_attribute *attr,
-                                       char *bufptr);
-#endif
-
 /*
  * CPU notifier priorities.
  */
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 506146e5f4a8..25f6f5970552 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1110,7 +1110,7 @@ static int do_amba_entry(const char *filename,
 }
 ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
 
-/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
+/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
  * All fields are numbers. It would be nicer to use strings for vendor
  * and feature, but getting those out of the build system here is too
  * complicated.
@@ -1124,10 +1124,10 @@ static int do_x86cpu_entry(const char *filename, void *symval,
         DEF_FIELD(symval, x86_cpu_id, model);
         DEF_FIELD(symval, x86_cpu_id, vendor);
 
-        strcpy(alias, "x86cpu:");
-        ADD(alias, "vendor:",  vendor != X86_VENDOR_ANY, vendor);
-        ADD(alias, ":family:", family != X86_FAMILY_ANY, family);
-        ADD(alias, ":model:",  model  != X86_MODEL_ANY,  model);
+        strcpy(alias, "cpu:type:x86,");
+        ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
+        ADD(alias, "fam", family != X86_FAMILY_ANY, family);
+        ADD(alias, "mod", model  != X86_MODEL_ANY,  model);
         strcat(alias, ":feature:*");
         if (feature != X86_FEATURE_ANY)
                 sprintf(alias + strlen(alias), "%04X*", feature);