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-rw-r--r--fs/xfs/xfs_stats.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c
new file mode 100644
index 0000000..76fdc58
--- /dev/null
+++ b/fs/xfs/xfs_stats.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "xfs.h"
+#include <linux/proc_fs.h>
+
+DEFINE_PER_CPU(struct xfsstats, xfsstats);
+
+static int xfs_stat_proc_show(struct seq_file *m, void *v)
+{
+ int c, i, j, val;
+ __uint64_t xs_xstrat_bytes = 0;
+ __uint64_t xs_write_bytes = 0;
+ __uint64_t xs_read_bytes = 0;
+
+ static const struct xstats_entry {
+ char *desc;
+ int endpoint;
+ } xstats[] = {
+ { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
+ { "abt", XFSSTAT_END_ALLOC_BTREE },
+ { "blk_map", XFSSTAT_END_BLOCK_MAPPING },
+ { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
+ { "dir", XFSSTAT_END_DIRECTORY_OPS },
+ { "trans", XFSSTAT_END_TRANSACTIONS },
+ { "ig", XFSSTAT_END_INODE_OPS },
+ { "log", XFSSTAT_END_LOG_OPS },
+ { "push_ail", XFSSTAT_END_TAIL_PUSHING },
+ { "xstrat", XFSSTAT_END_WRITE_CONVERT },
+ { "rw", XFSSTAT_END_READ_WRITE_OPS },
+ { "attr", XFSSTAT_END_ATTRIBUTE_OPS },
+ { "icluster", XFSSTAT_END_INODE_CLUSTER },
+ { "vnodes", XFSSTAT_END_VNODE_OPS },
+ { "buf", XFSSTAT_END_BUF },
+ { "abtb2", XFSSTAT_END_ABTB_V2 },
+ { "abtc2", XFSSTAT_END_ABTC_V2 },
+ { "bmbt2", XFSSTAT_END_BMBT_V2 },
+ { "ibt2", XFSSTAT_END_IBT_V2 },
+ };
+
+ /* Loop over all stats groups */
+ for (i=j = 0; i < ARRAY_SIZE(xstats); i++) {
+ seq_printf(m, "%s", xstats[i].desc);
+ /* inner loop does each group */
+ while (j < xstats[i].endpoint) {
+ val = 0;
+ /* sum over all cpus */
+ for_each_possible_cpu(c)
+ val += *(((__u32*)&per_cpu(xfsstats, c) + j));
+ seq_printf(m, " %u", val);
+ j++;
+ }
+ seq_putc(m, '\n');
+ }
+ /* extra precision counters */
+ for_each_possible_cpu(i) {
+ xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
+ xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
+ xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
+ }
+
+ seq_printf(m, "xpc %Lu %Lu %Lu\n",
+ xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
+ seq_printf(m, "debug %u\n",
+#if defined(DEBUG)
+ 1);
+#else
+ 0);
+#endif
+ return 0;
+}
+
+static int xfs_stat_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, xfs_stat_proc_show, NULL);
+}
+
+static const struct file_operations xfs_stat_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = xfs_stat_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+int
+xfs_init_procfs(void)
+{
+ if (!proc_mkdir("fs/xfs", NULL))
+ goto out;
+
+ if (!proc_create("fs/xfs/stat", 0, NULL,
+ &xfs_stat_proc_fops))
+ goto out_remove_entry;
+ return 0;
+
+ out_remove_entry:
+ remove_proc_entry("fs/xfs", NULL);
+ out:
+ return -ENOMEM;
+}
+
+void
+xfs_cleanup_procfs(void)
+{
+ remove_proc_entry("fs/xfs/stat", NULL);
+ remove_proc_entry("fs/xfs", NULL);
+}
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