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sysdev: Pass attribute in sysdev_class attributes show/store

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Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.

Also drivers can extend the attributes with own data fields
and use that in the low level function.

Similar to sysdev_attributes and normal attributes.

This is a tree-wide sweep, converting everything in one go.

No functional changes in this patch other than passing the new
argument everywhere.

Tested on x86, the non x86 parts are uncompiled.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Andi Kleen
2010-01-05 12:47:58 +01:00
committed by Greg Kroah-Hartman
parent 3d03ba4d1d
commit c9be0a36f9
10 changed files with 89 additions and 30 deletions
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drivers/base/cpu.c
+6 -3
View File
@@ -151,7 +151,8 @@ static ssize_t print_cpus_map(char *buf, const struct cpumask *map)
}
#define print_cpus_func(type) \
static ssize_t print_cpus_##type(struct sysdev_class *class, char *buf) \
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); \
} \
@@ -165,7 +166,8 @@ print_cpus_func(present);
/*
* Print values for NR_CPUS and offlined cpus
*/
static ssize_t print_cpus_kernel_max(struct sysdev_class *class, char *buf)
static ssize_t print_cpus_kernel_max(struct sysdev_class *class,
struct sysdev_class_attribute *attr, char *buf)
{
int n = snprintf(buf, PAGE_SIZE-2, "%d\n", NR_CPUS - 1);
return n;
@@ -175,7 +177,8 @@ static SYSDEV_CLASS_ATTR(kernel_max, 0444, print_cpus_kernel_max, NULL);
/* arch-optional setting to enable display of offline cpus >= nr_cpu_ids */
unsigned int total_cpus;
static ssize_t print_cpus_offline(struct sysdev_class *class, char *buf)
static ssize_t print_cpus_offline(struct sysdev_class *class,
struct sysdev_class_attribute *attr, char *buf)
{
int n = 0, len = PAGE_SIZE-2;
cpumask_var_t offline;