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Commit 6784096b authored by Oleg Drokin's avatar Oleg Drokin Committed by Greg Kroah-Hartman
Browse files

staging/lustre/ldlm: move namespaces/lru_size to sysfs 



Move ldlm display of lru_size from procfs to sysfs

Signed-off-by: default avatarOleg Drokin <green@linuxhacker.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 63af1f57

drivers/staging/lustre/lustre/ldlm/ldlm_resource.c

+14 −17
Original line number Diff line number Diff line
@@ -179,31 +179,28 @@ static ssize_t lock_count_show(struct kobject *kobj, struct attribute *attr, 
}

LUSTRE_RO_ATTR(lock_count);



static int lprocfs_lru_size_seq_show(struct seq_file *m, void *v)

static ssize_t lru_size_show(struct kobject *kobj, struct attribute *attr,

			     char *buf)

{

	struct ldlm_namespace *ns = m->private;

	struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,

						 ns_kobj);

	__u32 *nr = &ns->ns_max_unused;



	if (ns_connect_lru_resize(ns))

		nr = &ns->ns_nr_unused;

	return lprocfs_rd_uint(m, nr);

	return sprintf(buf, "%u", *nr);

}



static ssize_t lprocfs_lru_size_seq_write(struct file *file,

					const char __user *buffer,

					size_t count, loff_t *off)

static ssize_t lru_size_store(struct kobject *kobj, struct attribute *attr,

			      const char *buffer, size_t count)

{

	struct ldlm_namespace *ns = ((struct seq_file *)file->private_data)->private;

	char dummy[MAX_STRING_SIZE + 1];

	struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,

						 ns_kobj);

	unsigned long tmp;

	int lru_resize;

	int err;



	dummy[MAX_STRING_SIZE] = '\0';

	if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))

		return -EFAULT;



	if (strncmp(dummy, "clear", 5) == 0) {

	if (strncmp(buffer, "clear", 5) == 0) {

		CDEBUG(D_DLMTRACE,

		       "dropping all unused locks from namespace %s\n",

		       ldlm_ns_name(ns));
@@ -229,9 +226,9 @@ static ssize_t lprocfs_lru_size_seq_write(struct file *file, 
		return count;

	}



	err = kstrtoul(dummy, 10, &tmp);

	err = kstrtoul(buffer, 10, &tmp);

	if (err != 0) {

		CERROR("invalid value written\n");

		CERROR("lru_size: invalid value written\n");

		return -EINVAL;

	}

	lru_resize = (tmp == 0);
@@ -277,7 +274,7 @@ static ssize_t lprocfs_lru_size_seq_write(struct file *file, 


	return count;

}

LPROC_SEQ_FOPS(lprocfs_lru_size);

LUSTRE_RW_ATTR(lru_size);



static int lprocfs_elc_seq_show(struct seq_file *m, void *v)

{
@@ -311,6 +308,7 @@ LPROC_SEQ_FOPS(lprocfs_elc); 
static struct attribute *ldlm_ns_attrs[] = {

	&lustre_attr_resource_count.attr,

	&lustre_attr_lock_count.attr,

	&lustre_attr_lru_size.attr,

	NULL,

};
@@ -401,7 +399,6 @@ int ldlm_namespace_proc_register(struct ldlm_namespace *ns) 
	if (ns_is_client(ns)) {

		LDLM_NS_ADD_VAR("lock_unused_count", &ns->ns_nr_unused,

				&ldlm_uint_fops);

		LDLM_NS_ADD_VAR("lru_size", ns, &lprocfs_lru_size_fops);

		LDLM_NS_ADD_VAR("lru_max_age", &ns->ns_max_age,

				&ldlm_rw_uint_fops);

		LDLM_NS_ADD_VAR("early_lock_cancel", ns, &lprocfs_elc_fops);

drivers/staging/lustre/sysfs-fs-lustre

+9 −0
Original line number Diff line number Diff line
@@ -213,3 +213,12 @@ Date: May 2015 
Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Displays number or locks allocated in this namespace.



What:		/sys/fs/lustre/ldlm/namespaces/<name>/lru_size

Date:		May 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls and displays LRU size limit for unused locks for this

		namespace.

		0 - LRU size is unlimited, controlled by server resources

		positive number - number of locks to allow in lock LRU list