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Subject[PATCH 07/62] sysdev: Convert cpu driver sysdev class attributes
Date
From: Andi Kleen <andi@firstfloor.org>

Using the new attribute argument convert the cpu driver class attributes
to carry the node state. Then use a shared function to do what a lot of
individual functions did before.

This eliminates an ugly macro.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/base/cpu.c | 37 +++++++++++++++++++++----------------
1 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index fd1b2f9..b04ecfc 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -141,27 +141,32 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
/*
* Print cpu online, possible, present, and system maps
*/
-static ssize_t print_cpus_map(char *buf, const struct cpumask *map)
+
+struct cpu_attr {
+ struct sysdev_class_attribute attr;
+ const struct cpumask *const * const map;
+};
+
+static ssize_t show_cpus_attr(struct sysdev_class *class,
+ struct sysdev_class_attribute *attr,
+ char *buf)
{
- int n = cpulist_scnprintf(buf, PAGE_SIZE-2, map);
+ struct cpu_attr *ca = container_of(attr, struct cpu_attr, attr);
+ int n = cpulist_scnprintf(buf, PAGE_SIZE-2, *(ca->map));

buf[n++] = '\n';
buf[n] = '\0';
return n;
}

-#define print_cpus_func(type) \
-static ssize_t print_cpus_##type(struct sysdev_class *class, \
- struct sysdev_class_attribute *attr, char *buf) \
-{ \
- return print_cpus_map(buf, cpu_##type##_mask); \
-} \
-static struct sysdev_class_attribute attr_##type##_map = \
- _SYSDEV_CLASS_ATTR(type, 0444, print_cpus_##type, NULL)
+#define _CPU_ATTR(name, map) \
+ { _SYSDEV_CLASS_ATTR(name, 0444, show_cpus_attr, NULL), map }

-print_cpus_func(online);
-print_cpus_func(possible);
-print_cpus_func(present);
+static struct cpu_attr cpu_attrs[] = {
+ _CPU_ATTR(online, &cpu_online_mask),
+ _CPU_ATTR(possible, &cpu_possible_mask),
+ _CPU_ATTR(present, &cpu_present_mask),
+};

/*
* Print values for NR_CPUS and offlined cpus
@@ -208,9 +213,9 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
static SYSDEV_CLASS_ATTR(offline, 0444, print_cpus_offline, NULL);

static struct sysdev_class_attribute *cpu_state_attr[] = {
- &attr_online_map,
- &attr_possible_map,
- &attr_present_map,
+ &cpu_attrs[0].attr,
+ &cpu_attrs[1].attr,
+ &cpu_attrs[2].attr,
&attr_kernel_max,
&attr_offline,
};
--
1.7.0.1


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