289af54cc6
Gather statistics from the netfs interface that can be exported through a seqfile. This is intended to be called by a later patch when viewing /proc/fs/fscache/stats. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/161118139247.1232039.10556850937548511068.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161034669.2537118.2761232524997091480.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340397101.1303470.17581910581108378458.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539539959.286939.6794352576462965914.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653797700.2770958.5801990354413178228.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789079281.6155.17141344853277186500.stgit@warthog.procyon.org.uk/ # v6
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/* Internal definitions for network filesystem support
|
|
*
|
|
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*/
|
|
|
|
#ifdef pr_fmt
|
|
#undef pr_fmt
|
|
#endif
|
|
|
|
#define pr_fmt(fmt) "netfs: " fmt
|
|
|
|
/*
|
|
* read_helper.c
|
|
*/
|
|
extern unsigned int netfs_debug;
|
|
|
|
/*
|
|
* stats.c
|
|
*/
|
|
#ifdef CONFIG_NETFS_STATS
|
|
extern atomic_t netfs_n_rh_readahead;
|
|
extern atomic_t netfs_n_rh_readpage;
|
|
extern atomic_t netfs_n_rh_rreq;
|
|
extern atomic_t netfs_n_rh_sreq;
|
|
extern atomic_t netfs_n_rh_download;
|
|
extern atomic_t netfs_n_rh_download_done;
|
|
extern atomic_t netfs_n_rh_download_failed;
|
|
extern atomic_t netfs_n_rh_download_instead;
|
|
extern atomic_t netfs_n_rh_read;
|
|
extern atomic_t netfs_n_rh_read_done;
|
|
extern atomic_t netfs_n_rh_read_failed;
|
|
extern atomic_t netfs_n_rh_zero;
|
|
extern atomic_t netfs_n_rh_short_read;
|
|
extern atomic_t netfs_n_rh_write;
|
|
extern atomic_t netfs_n_rh_write_done;
|
|
extern atomic_t netfs_n_rh_write_failed;
|
|
|
|
|
|
static inline void netfs_stat(atomic_t *stat)
|
|
{
|
|
atomic_inc(stat);
|
|
}
|
|
|
|
static inline void netfs_stat_d(atomic_t *stat)
|
|
{
|
|
atomic_dec(stat);
|
|
}
|
|
|
|
#else
|
|
#define netfs_stat(x) do {} while(0)
|
|
#define netfs_stat_d(x) do {} while(0)
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* debug tracing
|
|
*/
|
|
#define dbgprintk(FMT, ...) \
|
|
printk("[%-6.6s] "FMT"\n", current->comm, ##__VA_ARGS__)
|
|
|
|
#define kenter(FMT, ...) dbgprintk("==> %s("FMT")", __func__, ##__VA_ARGS__)
|
|
#define kleave(FMT, ...) dbgprintk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
|
|
#define kdebug(FMT, ...) dbgprintk(FMT, ##__VA_ARGS__)
|
|
|
|
#ifdef __KDEBUG
|
|
#define _enter(FMT, ...) kenter(FMT, ##__VA_ARGS__)
|
|
#define _leave(FMT, ...) kleave(FMT, ##__VA_ARGS__)
|
|
#define _debug(FMT, ...) kdebug(FMT, ##__VA_ARGS__)
|
|
|
|
#elif defined(CONFIG_NETFS_DEBUG)
|
|
#define _enter(FMT, ...) \
|
|
do { \
|
|
if (netfs_debug) \
|
|
kenter(FMT, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define _leave(FMT, ...) \
|
|
do { \
|
|
if (netfs_debug) \
|
|
kleave(FMT, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define _debug(FMT, ...) \
|
|
do { \
|
|
if (netfs_debug) \
|
|
kdebug(FMT, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#else
|
|
#define _enter(FMT, ...) no_printk("==> %s("FMT")", __func__, ##__VA_ARGS__)
|
|
#define _leave(FMT, ...) no_printk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
|
|
#define _debug(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
|
|
#endif
|