staging/lustre/obdclass: Move common obd proc files to sysfs

This moves uuid display and also underlying fs statistics.
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -633,7 +633,6 @@ extern int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
 extern int lprocfs_rd_uint(struct seq_file *m, void *data);
 extern int lprocfs_wr_uint(struct file *file, const char __user *buffer,
 			   unsigned long count, void *data);
-extern int lprocfs_rd_uuid(struct seq_file *m, void *data);
 extern int lprocfs_rd_name(struct seq_file *m, void *data);
 extern int lprocfs_rd_server_uuid(struct seq_file *m, void *data);
 extern int lprocfs_rd_conn_uuid(struct seq_file *m, void *data);
@@ -658,12 +657,6 @@ extern int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
 				   size_t count, loff_t *off);
 
 /* Statfs helpers */
-extern int lprocfs_rd_blksize(struct seq_file *m, void *data);
-extern int lprocfs_rd_kbytestotal(struct seq_file *m, void *data);
-extern int lprocfs_rd_kbytesfree(struct seq_file *m, void *data);
-extern int lprocfs_rd_kbytesavail(struct seq_file *m, void *data);
-extern int lprocfs_rd_filestotal(struct seq_file *m, void *data);
-extern int lprocfs_rd_filesfree(struct seq_file *m, void *data);
 
 extern int lprocfs_write_helper(const char __user *buffer, unsigned long count,
 				int *val);

drivers/staging/lustre/lustre/lmv/lproc_lmv.c

@@ -204,13 +204,10 @@ static int lmv_target_seq_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
-
 static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
 	{ "numobd",	  &lmv_numobd_fops,	  NULL, 0 },
 	{ "placement",	  &lmv_placement_fops,    NULL, 0 },
 	{ "activeobd",	  &lmv_activeobd_fops,    NULL, 0 },
-	{ "uuid",	  &lmv_uuid_fops,	  NULL, 0 },
 	{ "desc_uuid",	  &lmv_desc_uuid_fops,    NULL, 0 },
 	{ NULL }
 };

drivers/staging/lustre/lustre/lov/lproc_lov.c

@@ -262,29 +262,14 @@ static int lov_target_seq_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
-LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
-LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
-LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
-LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
-LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
-LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
-
 static struct lprocfs_vars lprocfs_lov_obd_vars[] = {
-	{ "uuid",	  &lov_uuid_fops,	  NULL, 0 },
 	{ "stripesize",   &lov_stripesize_fops,   NULL },
 	{ "stripeoffset", &lov_stripeoffset_fops, NULL },
 	{ "stripecount",  &lov_stripecount_fops,  NULL },
 	{ "stripetype",   &lov_stripetype_fops,   NULL },
 	{ "numobd",       &lov_numobd_fops,	  NULL, 0 },
 	{ "activeobd",    &lov_activeobd_fops,	  NULL, 0 },
-	{ "filestotal",   &lov_filestotal_fops,   NULL, 0 },
-	{ "filesfree",    &lov_filesfree_fops,    NULL, 0 },
 	/*{ "filegroups", lprocfs_rd_filegroups,  NULL, 0 },*/
-	{ "blocksize",    &lov_blksize_fops,      NULL, 0 },
-	{ "kbytestotal",  &lov_kbytestotal_fops,  NULL, 0 },
-	{ "kbytesfree",   &lov_kbytesfree_fops,   NULL, 0 },
-	{ "kbytesavail",  &lov_kbytesavail_fops,  NULL, 0 },
 	{ "desc_uuid",    &lov_desc_uuid_fops,    NULL, 0 },
 	{ NULL }
 };

drivers/staging/lustre/lustre/mdc/lproc_mdc.c

@@ -155,14 +155,7 @@ static struct file_operations mdc_kuc_fops = {
 
 LPROC_SEQ_FOPS_WR_ONLY(mdc, ping);
 
-LPROC_SEQ_FOPS_RO_TYPE(mdc, uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, blksize);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytestotal);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesfree);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesavail);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, filestotal);
-LPROC_SEQ_FOPS_RO_TYPE(mdc, filesfree);
 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
@@ -178,15 +171,8 @@ LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 
 static struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
-	{ "uuid",		&mdc_uuid_fops,			NULL, 0 },
 	{ "ping",		&mdc_ping_fops,			NULL, 0222 },
 	{ "connect_flags",	&mdc_connect_flags_fops,	NULL, 0 },
-	{ "blocksize",		&mdc_blksize_fops,		NULL, 0 },
-	{ "kbytestotal",	&mdc_kbytestotal_fops,		NULL, 0 },
-	{ "kbytesfree",		&mdc_kbytesfree_fops,		NULL, 0 },
-	{ "kbytesavail",	&mdc_kbytesavail_fops,		NULL, 0 },
-	{ "filestotal",		&mdc_filestotal_fops,		NULL, 0 },
-	{ "filesfree",		&mdc_filesfree_fops,		NULL, 0 },
 	/*{ "filegroups",	lprocfs_rd_filegroups,		NULL, 0 },*/
 	{ "mds_server_uuid",	&mdc_server_uuid_fops,		NULL, 0 },
 	{ "mds_conn_uuid",	&mdc_conn_uuid_fops,		NULL, 0 },

drivers/staging/lustre/lustre/mgc/lproc_mgc.c

@@ -40,7 +40,6 @@
 #include "../include/lprocfs_status.h"
 #include "mgc_internal.h"
 
-LPROC_SEQ_FOPS_RO_TYPE(mgc, uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mgc, connect_flags);
 LPROC_SEQ_FOPS_RO_TYPE(mgc, server_uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mgc, conn_uuid);
@@ -56,7 +55,6 @@ static int mgc_ir_state_seq_show(struct seq_file *m, void *v)
 LPROC_SEQ_FOPS_RO(mgc_ir_state);
 
 static struct lprocfs_vars lprocfs_mgc_obd_vars[] = {
-	{ "uuid",	     &mgc_uuid_fops,	  NULL, 0 },
 	{ "ping",	     &mgc_ping_fops,      NULL, 0222 },
 	{ "connect_flags",   &mgc_connect_flags_fops, NULL, 0 },
 	{ "mgs_server_uuid", &mgc_server_uuid_fops,   NULL, 0 },

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

@@ -501,15 +501,15 @@ int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
 }
 EXPORT_SYMBOL(lprocfs_wr_atomic);
 
-int lprocfs_rd_uuid(struct seq_file *m, void *data)
+static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
+			 char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 
-	LASSERT(obd != NULL);
-	seq_printf(m, "%s\n", obd->obd_uuid.uuid);
-	return 0;
+	return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
 }
-EXPORT_SYMBOL(lprocfs_rd_uuid);
+LUSTRE_RO_ATTR(uuid);
 
 int lprocfs_rd_name(struct seq_file *m, void *data)
 {
@@ -521,23 +521,27 @@ int lprocfs_rd_name(struct seq_file *m, void *data)
 }
 EXPORT_SYMBOL(lprocfs_rd_name);
 
-int lprocfs_rd_blksize(struct seq_file *m, void *data)
+static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
+			      char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 			    OBD_STATFS_NODELAY);
 	if (!rc)
-		seq_printf(m, "%u\n", osfs.os_bsize);
+		return sprintf(buf, "%u\n", osfs.os_bsize);
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_blksize);
+LUSTRE_RO_ATTR(blocksize);
 
-int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
+static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
+				char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
@@ -549,16 +553,18 @@ int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
 		while (blk_size >>= 1)
 			result <<= 1;
 
-		seq_printf(m, "%llu\n", result);
+		return sprintf(buf, "%llu\n", result);
 	}
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
+LUSTRE_RO_ATTR(kbytestotal);
 
-int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
+static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
@@ -570,16 +576,18 @@ int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
 		while (blk_size >>= 1)
 			result <<= 1;
 
-		seq_printf(m, "%llu\n", result);
+		return sprintf(buf, "%llu\n", result);
 	}
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
+LUSTRE_RO_ATTR(kbytesfree);
 
-int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
+static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
+				char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
@@ -591,40 +599,44 @@ int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
 		while (blk_size >>= 1)
 			result <<= 1;
 
-		seq_printf(m, "%llu\n", result);
+		return sprintf(buf, "%llu\n", result);
 	}
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
+LUSTRE_RO_ATTR(kbytesavail);
 
-int lprocfs_rd_filestotal(struct seq_file *m, void *data)
+static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 			    OBD_STATFS_NODELAY);
 	if (!rc)
-		seq_printf(m, "%llu\n", osfs.os_files);
+		return sprintf(buf, "%llu\n", osfs.os_files);
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_filestotal);
+LUSTRE_RO_ATTR(filestotal);
 
-int lprocfs_rd_filesfree(struct seq_file *m, void *data)
+static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
+			      char *buf)
 {
-	struct obd_device *obd = data;
+	struct obd_device *obd = container_of(kobj, struct obd_device,
+					      obd_kobj);
 	struct obd_statfs  osfs;
 	int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 			    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 			    OBD_STATFS_NODELAY);
 	if (!rc)
-		seq_printf(m, "%llu\n", osfs.os_ffree);
+		return sprintf(buf, "%llu\n", osfs.os_ffree);
 
 	return rc;
 }
-EXPORT_SYMBOL(lprocfs_rd_filesfree);
+LUSTRE_RO_ATTR(filesfree);
 
 int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
 {
@@ -995,6 +1007,13 @@ int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
 
 static struct attribute *obd_def_attrs[] = {
+	&lustre_attr_blocksize.attr,
+	&lustre_attr_kbytestotal.attr,
+	&lustre_attr_kbytesfree.attr,
+	&lustre_attr_kbytesavail.attr,
+	&lustre_attr_filestotal.attr,
+	&lustre_attr_filesfree.attr,
+	&lustre_attr_uuid.attr,
 	NULL,
 };
 

drivers/staging/lustre/lustre/osc/lproc_osc.c

@@ -520,14 +520,7 @@ static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 }
 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 
-LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
-LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
-LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
-LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
-LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
-LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
-LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
@@ -539,15 +532,8 @@ LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 
 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
-	{ "uuid",	     &osc_uuid_fops,	NULL, 0 },
 	{ "ping",	     &osc_ping_fops,    NULL, 0222 },
 	{ "connect_flags",   &osc_connect_flags_fops, NULL, 0 },
-	{ "blocksize",       &osc_blksize_fops,     NULL, 0 },
-	{ "kbytestotal",     &osc_kbytestotal_fops, NULL, 0 },
-	{ "kbytesfree",      &osc_kbytesfree_fops,  NULL, 0 },
-	{ "kbytesavail",     &osc_kbytesavail_fops, NULL, 0 },
-	{ "filestotal",      &osc_filestotal_fops,  NULL, 0 },
-	{ "filesfree",       &osc_filesfree_fops,   NULL, 0 },
 	/*{ "filegroups",      lprocfs_rd_filegroups,  NULL, 0 },*/
 	{ "ost_server_uuid", &osc_server_uuid_fops, NULL, 0 },
 	{ "ost_conn_uuid",   &osc_conn_uuid_fops, NULL, 0 },

drivers/staging/lustre/sysfs-fs-lustre

@@ -336,3 +336,51 @@ Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
 Description:
 		Controls what percentage of ldlm callback threads is dedicated
 		to "high priority" incoming requests.
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/blocksize
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Blocksize on backend filesystem for service behind this obd
+		device (or biggest blocksize for compound devices like lov
+		and lmv)
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/kbytestotal
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Total number of kilobytes of space on backend filesystem
+		for service behind this obd (or total amount for compound
+		devices like lov lmv)
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/kbytesfree
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Number of free kilobytes on backend filesystem for service
+		behind this obd (or total amount for compound devices
+		like lov lmv)
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/kbytesavail
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Number of kilobytes of free space on backend filesystem
+		for service behind this obd (or total amount for compound
+		devices like lov lmv) that is actually available for use
+		(taking into account per-client and filesystem reservations).
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/filestotal
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Number of inodes on backend filesystem for service behind this
+		obd.
+
+What:		/sys/fs/lustre/{obdtype}/{connection_name}/filesfree
+Date:		May 2015
+Contact:	"Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+		Number of free inodes on backend filesystem for service
+		behind this obd.
+