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Commit 5e66f70e authored by Oleg Drokin's avatar Oleg Drokin Committed by Greg Kroah-Hartman
Browse files

staging/lustre: Generic helpers for sysfs 



Add generic helpers to allow displaying oof lustre-specific values
in /sys/fs/lustre

Signed-off-by: default avatarOleg Drokin <green@linuxhacker.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 73f11ecb

drivers/staging/lustre/lustre/include/lprocfs_status.h

+21 −0
Original line number Diff line number Diff line
@@ -742,6 +742,27 @@ static struct file_operations name##_fops = { \ 
		.release = lprocfs_single_release,			\

	}



struct lustre_attr {

	struct attribute attr;

	ssize_t (*show)(struct kobject *kobj, struct attribute *attr,

			char *buf);

	ssize_t (*store)(struct kobject *kobj, struct attribute *attr,

			 const char *buf, size_t len);

};



#define LUSTRE_ATTR(name, mode, show, store) \

static struct lustre_attr lustre_attr_##name = __ATTR(name, mode, show, store)



#define LUSTRE_RO_ATTR(name) LUSTRE_ATTR(name, 0444, name##_show, NULL)

#define LUSTRE_RW_ATTR(name) LUSTRE_ATTR(name, 0644, name##_show, name##_store)



ssize_t lustre_attr_show(struct kobject *kobj, struct attribute *attr,

			 char *buf);

ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,

			  const char *buf, size_t len);



extern const struct sysfs_ops lustre_sysfs_ops;



/* lproc_ptlrpc.c */

struct ptlrpc_request;

extern void target_print_req(void *seq_file, struct ptlrpc_request *req);

drivers/staging/lustre/lustre/obdclass/lprocfs_status.c

+24 −0
Original line number Diff line number Diff line
@@ -2056,3 +2056,27 @@ int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data) 
EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);



#endif



ssize_t lustre_attr_show(struct kobject *kobj,

			 struct attribute *attr, char *buf)

{

	struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);



	return a->show ? a->show(kobj, attr, buf) : 0;

}

EXPORT_SYMBOL_GPL(lustre_attr_show);



ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,

			  const char *buf, size_t len)

{

	struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);



	return a->store ? a->store(kobj, attr, buf, len) : len;

}

EXPORT_SYMBOL_GPL(lustre_attr_store);



const struct sysfs_ops lustre_sysfs_ops = {

	.show  = lustre_attr_show,

	.store = lustre_attr_store,

};

EXPORT_SYMBOL_GPL(lustre_sysfs_ops);