d01c495f43
Add stat counters to count the number of request and subrequest retries and display them in /proc/fs/netfs/stats. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20250212222402.3618494-3-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* Netfs support statistics
|
|
*
|
|
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*/
|
|
|
|
#include <linux/export.h>
|
|
#include <linux/seq_file.h>
|
|
#include "internal.h"
|
|
|
|
atomic_t netfs_n_rh_dio_read;
|
|
atomic_t netfs_n_rh_readahead;
|
|
atomic_t netfs_n_rh_read_folio;
|
|
atomic_t netfs_n_rh_read_single;
|
|
atomic_t netfs_n_rh_rreq;
|
|
atomic_t netfs_n_rh_sreq;
|
|
atomic_t netfs_n_rh_download;
|
|
atomic_t netfs_n_rh_download_done;
|
|
atomic_t netfs_n_rh_download_failed;
|
|
atomic_t netfs_n_rh_download_instead;
|
|
atomic_t netfs_n_rh_read;
|
|
atomic_t netfs_n_rh_read_done;
|
|
atomic_t netfs_n_rh_read_failed;
|
|
atomic_t netfs_n_rh_zero;
|
|
atomic_t netfs_n_rh_short_read;
|
|
atomic_t netfs_n_rh_write;
|
|
atomic_t netfs_n_rh_write_begin;
|
|
atomic_t netfs_n_rh_write_done;
|
|
atomic_t netfs_n_rh_write_failed;
|
|
atomic_t netfs_n_rh_write_zskip;
|
|
atomic_t netfs_n_rh_retry_read_req;
|
|
atomic_t netfs_n_rh_retry_read_subreq;
|
|
atomic_t netfs_n_wh_buffered_write;
|
|
atomic_t netfs_n_wh_writethrough;
|
|
atomic_t netfs_n_wh_dio_write;
|
|
atomic_t netfs_n_wh_writepages;
|
|
atomic_t netfs_n_wh_copy_to_cache;
|
|
atomic_t netfs_n_wh_wstream_conflict;
|
|
atomic_t netfs_n_wh_upload;
|
|
atomic_t netfs_n_wh_upload_done;
|
|
atomic_t netfs_n_wh_upload_failed;
|
|
atomic_t netfs_n_wh_write;
|
|
atomic_t netfs_n_wh_write_done;
|
|
atomic_t netfs_n_wh_write_failed;
|
|
atomic_t netfs_n_wh_retry_write_req;
|
|
atomic_t netfs_n_wh_retry_write_subreq;
|
|
atomic_t netfs_n_wb_lock_skip;
|
|
atomic_t netfs_n_wb_lock_wait;
|
|
atomic_t netfs_n_folioq;
|
|
|
|
int netfs_stats_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "Reads : DR=%u RA=%u RF=%u RS=%u WB=%u WBZ=%u\n",
|
|
atomic_read(&netfs_n_rh_dio_read),
|
|
atomic_read(&netfs_n_rh_readahead),
|
|
atomic_read(&netfs_n_rh_read_folio),
|
|
atomic_read(&netfs_n_rh_read_single),
|
|
atomic_read(&netfs_n_rh_write_begin),
|
|
atomic_read(&netfs_n_rh_write_zskip));
|
|
seq_printf(m, "Writes : BW=%u WT=%u DW=%u WP=%u 2C=%u\n",
|
|
atomic_read(&netfs_n_wh_buffered_write),
|
|
atomic_read(&netfs_n_wh_writethrough),
|
|
atomic_read(&netfs_n_wh_dio_write),
|
|
atomic_read(&netfs_n_wh_writepages),
|
|
atomic_read(&netfs_n_wh_copy_to_cache));
|
|
seq_printf(m, "ZeroOps: ZR=%u sh=%u sk=%u\n",
|
|
atomic_read(&netfs_n_rh_zero),
|
|
atomic_read(&netfs_n_rh_short_read),
|
|
atomic_read(&netfs_n_rh_write_zskip));
|
|
seq_printf(m, "DownOps: DL=%u ds=%u df=%u di=%u\n",
|
|
atomic_read(&netfs_n_rh_download),
|
|
atomic_read(&netfs_n_rh_download_done),
|
|
atomic_read(&netfs_n_rh_download_failed),
|
|
atomic_read(&netfs_n_rh_download_instead));
|
|
seq_printf(m, "CaRdOps: RD=%u rs=%u rf=%u\n",
|
|
atomic_read(&netfs_n_rh_read),
|
|
atomic_read(&netfs_n_rh_read_done),
|
|
atomic_read(&netfs_n_rh_read_failed));
|
|
seq_printf(m, "UpldOps: UL=%u us=%u uf=%u\n",
|
|
atomic_read(&netfs_n_wh_upload),
|
|
atomic_read(&netfs_n_wh_upload_done),
|
|
atomic_read(&netfs_n_wh_upload_failed));
|
|
seq_printf(m, "CaWrOps: WR=%u ws=%u wf=%u\n",
|
|
atomic_read(&netfs_n_wh_write),
|
|
atomic_read(&netfs_n_wh_write_done),
|
|
atomic_read(&netfs_n_wh_write_failed));
|
|
seq_printf(m, "Retries: rq=%u rs=%u wq=%u ws=%u\n",
|
|
atomic_read(&netfs_n_rh_retry_read_req),
|
|
atomic_read(&netfs_n_rh_retry_read_subreq),
|
|
atomic_read(&netfs_n_wh_retry_write_req),
|
|
atomic_read(&netfs_n_wh_retry_write_subreq));
|
|
seq_printf(m, "Objs : rr=%u sr=%u foq=%u wsc=%u\n",
|
|
atomic_read(&netfs_n_rh_rreq),
|
|
atomic_read(&netfs_n_rh_sreq),
|
|
atomic_read(&netfs_n_folioq),
|
|
atomic_read(&netfs_n_wh_wstream_conflict));
|
|
seq_printf(m, "WbLock : skip=%u wait=%u\n",
|
|
atomic_read(&netfs_n_wb_lock_skip),
|
|
atomic_read(&netfs_n_wb_lock_wait));
|
|
return fscache_stats_show(m);
|
|
}
|
|
EXPORT_SYMBOL(netfs_stats_show);
|