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linux/include/trace/events/cachefiles.h

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fscache: Add tracepoints Add some tracepoints to fscache: (*) fscache_cookie - Tracks a cookie's usage count. (*) fscache_netfs - Logs registration of a network filesystem, including the pointer to the cookie allocated. (*) fscache_acquire - Logs cookie acquisition. (*) fscache_relinquish - Logs cookie relinquishment. (*) fscache_enable - Logs enablement of a cookie. (*) fscache_disable - Logs disablement of a cookie. (*) fscache_osm - Tracks execution of states in the object state machine. and cachefiles: (*) cachefiles_ref - Tracks a cachefiles object's usage count. (*) cachefiles_lookup - Logs result of lookup_one_len(). (*) cachefiles_mkdir - Logs result of vfs_mkdir(). (*) cachefiles_create - Logs result of vfs_create(). (*) cachefiles_unlink - Logs calls to vfs_unlink(). (*) cachefiles_rename - Logs calls to vfs_rename(). (*) cachefiles_mark_active - Logs an object becoming active. (*) cachefiles_wait_active - Logs a wait for an old object to be destroyed. (*) cachefiles_mark_inactive - Logs an object becoming inactive. (*) cachefiles_mark_buried - Logs the burial of an object. Signed-off-by: David Howells <dhowells@redhat.com>
2018-04-04 20:41:27 +08:00
/* CacheFiles tracepoints
*
* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cachefiles
#if !defined(_TRACE_CACHEFILES_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_CACHEFILES_H
#include <linux/tracepoint.h>
/*
* Define enums for tracing information.
*/
#ifndef __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY
#define __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY
enum cachefiles_obj_ref_trace {
cachefiles_obj_put_wait_retry = fscache_obj_ref__nr_traces,
cachefiles_obj_put_wait_timeo,
cachefiles_obj_ref__nr_traces
};
#endif
/*
* Define enum -> string mappings for display.
*/
#define cachefiles_obj_kill_traces \
EM(FSCACHE_OBJECT_IS_STALE, "stale") \
EM(FSCACHE_OBJECT_NO_SPACE, "no_space") \
EM(FSCACHE_OBJECT_WAS_RETIRED, "was_retired") \
E_(FSCACHE_OBJECT_WAS_CULLED, "was_culled")
#define cachefiles_obj_ref_traces \
EM(fscache_obj_get_add_to_deps, "GET add_to_deps") \
EM(fscache_obj_get_queue, "GET queue") \
EM(fscache_obj_put_alloc_fail, "PUT alloc_fail") \
EM(fscache_obj_put_attach_fail, "PUT attach_fail") \
EM(fscache_obj_put_drop_obj, "PUT drop_obj") \
EM(fscache_obj_put_enq_dep, "PUT enq_dep") \
EM(fscache_obj_put_queue, "PUT queue") \
EM(fscache_obj_put_work, "PUT work") \
EM(cachefiles_obj_put_wait_retry, "PUT wait_retry") \
E_(cachefiles_obj_put_wait_timeo, "PUT wait_timeo")
/*
* Export enum symbols via userspace.
*/
#undef EM
#undef E_
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define E_(a, b) TRACE_DEFINE_ENUM(a);
cachefiles_obj_kill_traces;
cachefiles_obj_ref_traces;
/*
* Now redefine the EM() and E_() macros to map the enums to the strings that
* will be printed in the output.
*/
#undef EM
#undef E_
#define EM(a, b) { a, b },
#define E_(a, b) { a, b }
TRACE_EVENT(cachefiles_ref,
TP_PROTO(struct cachefiles_object *obj,
struct fscache_cookie *cookie,
enum cachefiles_obj_ref_trace why,
int usage),
TP_ARGS(obj, cookie, why, usage),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct fscache_cookie *, cookie )
__field(enum cachefiles_obj_ref_trace, why )
__field(int, usage )
),
TP_fast_assign(
__entry->obj = obj;
__entry->cookie = cookie;
__entry->usage = usage;
__entry->why = why;
),
TP_printk("c=%p o=%p u=%d %s",
__entry->cookie, __entry->obj, __entry->usage,
__print_symbolic(__entry->why, cachefiles_obj_ref_traces))
);
TRACE_EVENT(cachefiles_lookup,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
struct inode *inode),
TP_ARGS(obj, de, inode),
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(struct inode *, inode )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->inode = inode;
),
TP_printk("o=%p d=%p i=%p",
__entry->obj, __entry->de, __entry->inode)
);
TRACE_EVENT(cachefiles_mkdir,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de, int ret),
TP_ARGS(obj, de, ret),
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(int, ret )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->ret = ret;
),
TP_printk("o=%p d=%p r=%u",
__entry->obj, __entry->de, __entry->ret)
);
TRACE_EVENT(cachefiles_create,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de, int ret),
TP_ARGS(obj, de, ret),
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(int, ret )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->ret = ret;
),
TP_printk("o=%p d=%p r=%u",
__entry->obj, __entry->de, __entry->ret)
);
TRACE_EVENT(cachefiles_unlink,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
enum fscache_why_object_killed why),
TP_ARGS(obj, de, why),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(enum fscache_why_object_killed, why )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->why = why;
),
TP_printk("o=%p d=%p w=%s",
__entry->obj, __entry->de,
__print_symbolic(__entry->why, cachefiles_obj_kill_traces))
);
TRACE_EVENT(cachefiles_rename,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
struct dentry *to,
enum fscache_why_object_killed why),
TP_ARGS(obj, de, to, why),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(struct dentry *, to )
__field(enum fscache_why_object_killed, why )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->to = to;
__entry->why = why;
),
TP_printk("o=%p d=%p t=%p w=%s",
__entry->obj, __entry->de, __entry->to,
__print_symbolic(__entry->why, cachefiles_obj_kill_traces))
);
TRACE_EVENT(cachefiles_mark_active,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de),
TP_ARGS(obj, de),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
),
TP_printk("o=%p d=%p",
__entry->obj, __entry->de)
);
TRACE_EVENT(cachefiles_wait_active,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
struct cachefiles_object *xobj),
TP_ARGS(obj, de, xobj),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(struct cachefiles_object *, xobj )
__field(u16, flags )
__field(u16, fsc_flags )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->xobj = xobj;
__entry->flags = xobj->flags;
__entry->fsc_flags = xobj->fscache.flags;
),
TP_printk("o=%p d=%p wo=%p wf=%x wff=%x",
__entry->obj, __entry->de, __entry->xobj,
__entry->flags, __entry->fsc_flags)
);
TRACE_EVENT(cachefiles_mark_inactive,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
struct inode *inode),
TP_ARGS(obj, de, inode),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(struct inode *, inode )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->inode = inode;
),
TP_printk("o=%p d=%p i=%p",
__entry->obj, __entry->de, __entry->inode)
);
TRACE_EVENT(cachefiles_mark_buried,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
enum fscache_why_object_killed why),
TP_ARGS(obj, de, why),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(struct cachefiles_object *, obj )
__field(struct dentry *, de )
__field(enum fscache_why_object_killed, why )
),
TP_fast_assign(
__entry->obj = obj;
__entry->de = de;
__entry->why = why;
),
TP_printk("o=%p d=%p w=%s",
__entry->obj, __entry->de,
__print_symbolic(__entry->why, cachefiles_obj_kill_traces))
);
#endif /* _TRACE_CACHEFILES_H */
/* This part must be outside protection */
#include <trace/define_trace.h>