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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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13
kernel/perf_event.c
View file

@ -5481,13 +5481,16 @@ void __init perf_event_init(void)
register_cpu_notifier(&perf_cpu_nb);
}
static ssize_t perf_show_reserve_percpu(struct sysdev_class *class, char *buf)
static ssize_t perf_show_reserve_percpu(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
return sprintf(buf, "%d\n", perf_reserved_percpu);
}
static ssize_t
perf_set_reserve_percpu(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
const char *buf,
size_t count)
{
@ -5516,13 +5519,17 @@ perf_set_reserve_percpu(struct sysdev_class *class,
return count;
}
static ssize_t perf_show_overcommit(struct sysdev_class *class, char *buf)
static ssize_t perf_show_overcommit(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
char *buf)
{
return sprintf(buf, "%d\n", perf_overcommit);
}
static ssize_t
perf_set_overcommit(struct sysdev_class *class, const char *buf, size_t count)
perf_set_overcommit(struct sysdev_class *class,
struct sysdev_class_attribute *attr,
const char *buf, size_t count)
{
unsigned long val;
int err;