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afs: Trace the initiation and completion of client calls

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Add tracepoints to trace the initiation and completion of client calls
within the kafs filesystem.

The afs_make_vl_call tracepoint watches calls to the volume location
database server.

The afs_make_fs_call tracepoint watches calls to the file server.

The afs_call_done tracepoint watches for call completion.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2017-11-02 15:27:51 +00:00
parent becfcc7e57
commit 025db80c9e
5 changed files with 233 additions and 20 deletions
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142
include/trace/events/afs.h
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@@ -30,6 +30,38 @@ enum afs_call_trace {
afs_call_trace_work,
};
enum afs_fs_operation {
afs_FS_FetchData = 130, /* AFS Fetch file data */
afs_FS_FetchStatus = 132, /* AFS Fetch file status */
afs_FS_StoreData = 133, /* AFS Store file data */
afs_FS_StoreStatus = 135, /* AFS Store file status */
afs_FS_RemoveFile = 136, /* AFS Remove a file */
afs_FS_CreateFile = 137, /* AFS Create a file */
afs_FS_Rename = 138, /* AFS Rename or move a file or directory */
afs_FS_Symlink = 139, /* AFS Create a symbolic link */
afs_FS_Link = 140, /* AFS Create a hard link */
afs_FS_MakeDir = 141, /* AFS Create a directory */
afs_FS_RemoveDir = 142, /* AFS Remove a directory */
afs_FS_GetVolumeInfo = 148, /* AFS Get information about a volume */
afs_FS_GetVolumeStatus = 149, /* AFS Get volume status information */
afs_FS_GetRootVolume = 151, /* AFS Get root volume name */
afs_FS_SetLock = 156, /* AFS Request a file lock */
afs_FS_ExtendLock = 157, /* AFS Extend a file lock */
afs_FS_ReleaseLock = 158, /* AFS Release a file lock */
afs_FS_Lookup = 161, /* AFS lookup file in directory */
afs_FS_FetchData64 = 65537, /* AFS Fetch file data */
afs_FS_StoreData64 = 65538, /* AFS Store file data */
afs_FS_GiveUpAllCallBacks = 65539, /* AFS Give up all our callbacks on a server */
afs_FS_GetCapabilities = 65540, /* AFS Get FS server capabilities */
};
enum afs_vl_operation {
afs_VL_GetEntryByNameU = 527, /* AFS Get Vol Entry By Name operation ID */
afs_VL_GetAddrsU = 533, /* AFS Get FS server addresses */
afs_YFSVL_GetEndpoints = 64002, /* YFS Get FS & Vol server addresses */
afs_VL_GetCapabilities = 65537, /* AFS Get VL server capabilities */
};
#endif /* end __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY */
/*
@@ -42,6 +74,37 @@ enum afs_call_trace {
EM(afs_call_trace_wake, "WAKE ") \
E_(afs_call_trace_work, "WORK ")
#define afs_fs_operations \
EM(afs_FS_FetchData, "FS.FetchData") \
EM(afs_FS_FetchStatus, "FS.FetchStatus") \
EM(afs_FS_StoreData, "FS.StoreData") \
EM(afs_FS_StoreStatus, "FS.StoreStatus") \
EM(afs_FS_RemoveFile, "FS.RemoveFile") \
EM(afs_FS_CreateFile, "FS.CreateFile") \
EM(afs_FS_Rename, "FS.Rename") \
EM(afs_FS_Symlink, "FS.Symlink") \
EM(afs_FS_Link, "FS.Link") \
EM(afs_FS_MakeDir, "FS.MakeDir") \
EM(afs_FS_RemoveDir, "FS.RemoveDir") \
EM(afs_FS_GetVolumeInfo, "FS.GetVolumeInfo") \
EM(afs_FS_GetVolumeStatus, "FS.GetVolumeStatus") \
EM(afs_FS_GetRootVolume, "FS.GetRootVolume") \
EM(afs_FS_SetLock, "FS.SetLock") \
EM(afs_FS_ExtendLock, "FS.ExtendLock") \
EM(afs_FS_ReleaseLock, "FS.ReleaseLock") \
EM(afs_FS_Lookup, "FS.Lookup") \
EM(afs_FS_FetchData64, "FS.FetchData64") \
EM(afs_FS_StoreData64, "FS.StoreData64") \
EM(afs_FS_GiveUpAllCallBacks, "FS.GiveUpAllCallBacks") \
E_(afs_FS_GetCapabilities, "FS.GetCapabilities")
#define afs_vl_operations \
EM(afs_VL_GetEntryByNameU, "VL.GetEntryByNameU") \
EM(afs_VL_GetAddrsU, "VL.GetAddrsU") \
EM(afs_YFSVL_GetEndpoints, "YFSVL.GetEndpoints") \
E_(afs_VL_GetCapabilities, "VL.GetCapabilities")
/*
* Export enum symbols via userspace.
*/
@@ -51,6 +114,8 @@ enum afs_call_trace {
#define E_(a, b) TRACE_DEFINE_ENUM(a);
afs_call_traces;
afs_fs_operations;
afs_vl_operations;
/*
* Now redefine the EM() and E_() macros to map the enums to the strings that
@@ -178,6 +243,83 @@ TRACE_EVENT(afs_call,
__entry->where)
);
TRACE_EVENT(afs_make_fs_call,
TP_PROTO(struct afs_call *call, const struct afs_fid *fid),
TP_ARGS(call, fid),
TP_STRUCT__entry(
__field(struct afs_call *, call )
__field(enum afs_fs_operation, op )
__field_struct(struct afs_fid, fid )
),
TP_fast_assign(
__entry->call = call;
__entry->op = call->operation_ID;
if (fid) {
__entry->fid = *fid;
} else {
__entry->fid.vid = 0;
__entry->fid.vnode = 0;
__entry->fid.unique = 0;
}
),
TP_printk("c=%p %06x:%06x:%06x %s",
__entry->call,
__entry->fid.vid,
__entry->fid.vnode,
__entry->fid.unique,
__print_symbolic(__entry->op, afs_fs_operations))
);
TRACE_EVENT(afs_make_vl_call,
TP_PROTO(struct afs_call *call),
TP_ARGS(call),
TP_STRUCT__entry(
__field(struct afs_call *, call )
__field(enum afs_vl_operation, op )
),
TP_fast_assign(
__entry->call = call;
__entry->op = call->operation_ID;
),
TP_printk("c=%p %s",
__entry->call,
__print_symbolic(__entry->op, afs_vl_operations))
);
TRACE_EVENT(afs_call_done,
TP_PROTO(struct afs_call *call),
TP_ARGS(call),
TP_STRUCT__entry(
__field(struct afs_call *, call )
__field(struct rxrpc_call *, rx_call )
__field(int, ret )
__field(u32, abort_code )
),
TP_fast_assign(
__entry->call = call;
__entry->rx_call = call->rxcall;
__entry->ret = call->error;
__entry->abort_code = call->abort_code;
),
TP_printk(" c=%p ret=%d ab=%d [%p]",
__entry->call,
__entry->ret,
__entry->abort_code,
__entry->rx_call)
);
#endif /* _TRACE_AFS_H */
/* This part must be outside protection */