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debugfs: add get/set for atomic types

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debugfs currently lack the ability to create attributes
that set/get atomic_t values.

This patch adds support for this through a new
debugfs_create_atomic_t() function.

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Seth Jennings
2013-06-03 15:33:02 -05:00
committed by Greg Kroah-Hartman
parent 4993632218
commit 3a76e5e09f
3 changed files with 44 additions and 21 deletions
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21
lib/fault-inject.c
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@@ -182,27 +182,6 @@ static struct dentry *debugfs_create_stacktrace_depth(
#endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
static int debugfs_atomic_t_set(void *data, u64 val)
{
atomic_set((atomic_t *)data, val);
return 0;
}
static int debugfs_atomic_t_get(void *data, u64 *val)
{
*val = atomic_read((atomic_t *)data);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get,
debugfs_atomic_t_set, "%lld\n");
static struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
struct dentry *parent, atomic_t *value)
{
return debugfs_create_file(name, mode, parent, value, &fops_atomic_t);
}
struct dentry *fault_create_debugfs_attr(const char *name,
struct dentry *parent, struct fault_attr *attr)
{