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NFS: Add event tracing for generic NFS lookups

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Add tracepoints for lookup, lookup_revalidate and atomic_open

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2013-08-20 11:26:17 -04:00
parent 1472b83eae
commit 6e0d0be715
3 changed files with 203 additions and 0 deletions
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195
fs/nfs/nfstrace.h
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@@ -157,6 +157,201 @@ DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit);
DEFINE_NFS_INODE_EVENT(nfs_access_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_access_exit);
#define show_lookup_flags(flags) \
__print_flags((unsigned long)flags, "|", \
{ LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \
{ LOOKUP_DIRECTORY, "DIRECTORY" }, \
{ LOOKUP_OPEN, "OPEN" }, \
{ LOOKUP_CREATE, "CREATE" }, \
{ LOOKUP_EXCL, "EXCL" })
DECLARE_EVENT_CLASS(nfs_lookup_event,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags
),
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_LOOKUP_EVENT(name) \
DEFINE_EVENT(nfs_lookup_event, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry, \
unsigned int flags \
), \
TP_ARGS(dir, dentry, flags))
DECLARE_EVENT_CLASS(nfs_lookup_event_done,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags,
int error
),
TP_ARGS(dir, dentry, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->error,
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_LOOKUP_EVENT_DONE(name) \
DEFINE_EVENT(nfs_lookup_event_done, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry, \
unsigned int flags, \
int error \
), \
TP_ARGS(dir, dentry, flags, error))
DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_enter);
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_exit);
DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_revalidate_enter);
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_revalidate_exit);
#define show_open_flags(flags) \
__print_flags((unsigned long)flags, "|", \
{ O_CREAT, "O_CREAT" }, \
{ O_EXCL, "O_EXCL" }, \
{ O_TRUNC, "O_TRUNC" }, \
{ O_APPEND, "O_APPEND" }, \
{ O_DSYNC, "O_DSYNC" }, \
{ O_DIRECT, "O_DIRECT" }, \
{ O_DIRECTORY, "O_DIRECTORY" })
#define show_fmode_flags(mode) \
__print_flags(mode, "|", \
{ ((__force unsigned long)FMODE_READ), "READ" }, \
{ ((__force unsigned long)FMODE_WRITE), "WRITE" }, \
{ ((__force unsigned long)FMODE_EXEC), "EXEC" })
TRACE_EVENT(nfs_atomic_open_enter,
TP_PROTO(
const struct inode *dir,
const struct nfs_open_context *ctx,
unsigned int flags
),
TP_ARGS(dir, ctx, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
__string(name, ctx->dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__entry->fmode = (__force unsigned int)ctx->mode;
__assign_str(name, ctx->dentry->d_name.name);
),
TP_printk(
"flags=%u (%s) fmode=%s name=%02x:%02x:%llu/%s",
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
TRACE_EVENT(nfs_atomic_open_exit,
TP_PROTO(
const struct inode *dir,
const struct nfs_open_context *ctx,
unsigned int flags,
int error
),
TP_ARGS(dir, ctx, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
__string(name, ctx->dentry->d_name.name)
),
TP_fast_assign(
__entry->error = error;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__entry->fmode = (__force unsigned int)ctx->mode;
__assign_str(name, ctx->dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) fmode=%s "
"name=%02x:%02x:%llu/%s",
__entry->error,
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#endif /* _TRACE_NFS_H */
#undef TRACE_INCLUDE_PATH