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linux/include/trace/events/sunrpc.h
Pratyush Anand 051ac3848a net: sunrpc: fix tracepoint Warning: unknown op '->' 
`perf stat  -e sunrpc:svc_xprt_do_enqueue true` results in

Warning: unknown op '->'
Warning: [sunrpc:svc_xprt_do_enqueue] unknown op '->'

Similar warning for svc_handle_xprt as well.

Actually TP_printk() should never dereference an address saved in the ring
buffer that points somewhere in the kernel. There's no guarantee that that
object still exists (with the exception of static strings).

Therefore change all the arguments for TP_printk(), so that it references
values existing in the ring buffer only.

While doing that, also fix another possible bug when argument xprt could be
NULL and TP_fast_assign() tries to access it's elements.

Signed-off-by: Pratyush Anand <panand@redhat.com>
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: stable@vger.kernel.org
Fixes: 83a712e0af "sunrpc: add some tracepoints around ..."
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2015-08-31 16:32:15 -04:00

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM sunrpc
#if !defined(_TRACE_SUNRPC_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SUNRPC_H
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/xprtsock.h>
#include <linux/sunrpc/svc_xprt.h>
#include <net/tcp_states.h>
#include <linux/net.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(rpc_task_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(int, status)
),
TP_fast_assign(
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->status = task->tk_status;
),
TP_printk("task:%u@%u, status %d",
__entry->task_id, __entry->client_id,
__entry->status)
);
DEFINE_EVENT(rpc_task_status, rpc_call_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task)
);
DEFINE_EVENT(rpc_task_status, rpc_bind_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task)
);
TRACE_EVENT(rpc_connect_status,
TP_PROTO(struct rpc_task *task, int status),
TP_ARGS(task, status),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(int, status)
),
TP_fast_assign(
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->status = status;
),
TP_printk("task:%u@%u, status %d",
__entry->task_id, __entry->client_id,
__entry->status)
);
DECLARE_EVENT_CLASS(rpc_task_running,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const void *action),
TP_ARGS(clnt, task, action),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, action)
__field(unsigned long, runstate)
__field(int, status)
__field(unsigned short, flags)
),
TP_fast_assign(
__entry->client_id = clnt ? clnt->cl_clid : -1;
__entry->task_id = task->tk_pid;
__entry->action = action;
__entry->runstate = task->tk_runstate;
__entry->status = task->tk_status;
__entry->flags = task->tk_flags;
),
TP_printk("task:%u@%d flags=%4.4x state=%4.4lx status=%d action=%pf",
__entry->task_id, __entry->client_id,
__entry->flags,
__entry->runstate,
__entry->status,
__entry->action
)
);
DEFINE_EVENT(rpc_task_running, rpc_task_begin,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const void *action),
TP_ARGS(clnt, task, action)
);
DEFINE_EVENT(rpc_task_running, rpc_task_run_action,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const void *action),
TP_ARGS(clnt, task, action)
);
DEFINE_EVENT(rpc_task_running, rpc_task_complete,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const void *action),
TP_ARGS(clnt, task, action)
);
DECLARE_EVENT_CLASS(rpc_task_queued,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const struct rpc_wait_queue *q),
TP_ARGS(clnt, task, q),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(unsigned long, timeout)
__field(unsigned long, runstate)
__field(int, status)
__field(unsigned short, flags)
__string(q_name, rpc_qname(q))
),
TP_fast_assign(
__entry->client_id = clnt->cl_clid;
__entry->task_id = task->tk_pid;
__entry->timeout = task->tk_timeout;
__entry->runstate = task->tk_runstate;
__entry->status = task->tk_status;
__entry->flags = task->tk_flags;
__assign_str(q_name, rpc_qname(q));
),
TP_printk("task:%u@%u flags=%4.4x state=%4.4lx status=%d timeout=%lu queue=%s",
__entry->task_id, __entry->client_id,
__entry->flags,
__entry->runstate,
__entry->status,
__entry->timeout,
__get_str(q_name)
)
);
DEFINE_EVENT(rpc_task_queued, rpc_task_sleep,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const struct rpc_wait_queue *q),
TP_ARGS(clnt, task, q)
);
DEFINE_EVENT(rpc_task_queued, rpc_task_wakeup,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const struct rpc_wait_queue *q),
TP_ARGS(clnt, task, q)
);
/*
* First define the enums in the below macros to be exported to userspace
* via TRACE_DEFINE_ENUM().
*/
#undef EM
#undef EMe
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define EMe(a, b) TRACE_DEFINE_ENUM(a);
#define RPC_SHOW_SOCKET \
EM( SS_FREE, "FREE" ) \
EM( SS_UNCONNECTED, "UNCONNECTED" ) \
EM( SS_CONNECTING, "CONNECTING," ) \
EM( SS_CONNECTED, "CONNECTED," ) \
EMe(SS_DISCONNECTING, "DISCONNECTING" )
#define rpc_show_socket_state(state) \
__print_symbolic(state, RPC_SHOW_SOCKET)
RPC_SHOW_SOCKET
#define RPC_SHOW_SOCK \
EM( TCP_ESTABLISHED, "ESTABLISHED" ) \
EM( TCP_SYN_SENT, "SYN_SENT" ) \
EM( TCP_SYN_RECV, "SYN_RECV" ) \
EM( TCP_FIN_WAIT1, "FIN_WAIT1" ) \
EM( TCP_FIN_WAIT2, "FIN_WAIT2" ) \
EM( TCP_TIME_WAIT, "TIME_WAIT" ) \
EM( TCP_CLOSE, "CLOSE" ) \
EM( TCP_CLOSE_WAIT, "CLOSE_WAIT" ) \
EM( TCP_LAST_ACK, "LAST_ACK" ) \
EM( TCP_LISTEN, "LISTEN" ) \
EMe( TCP_CLOSING, "CLOSING" )
#define rpc_show_sock_state(state) \
__print_symbolic(state, RPC_SHOW_SOCK)
RPC_SHOW_SOCK
/*
* Now redefine the EM() and EMe() macros to map the enums to the strings
* that will be printed in the output.
*/
#undef EM
#undef EMe
#define EM(a, b) {a, b},
#define EMe(a, b) {a, b}
DECLARE_EVENT_CLASS(xs_socket_event,
TP_PROTO(
struct rpc_xprt *xprt,
struct socket *socket
),
TP_ARGS(xprt, socket),
TP_STRUCT__entry(
__field(unsigned int, socket_state)
__field(unsigned int, sock_state)
__field(unsigned long long, ino)
__string(dstaddr,
xprt->address_strings[RPC_DISPLAY_ADDR])
__string(dstport,
xprt->address_strings[RPC_DISPLAY_PORT])
),
TP_fast_assign(
struct inode *inode = SOCK_INODE(socket);
__entry->socket_state = socket->state;
__entry->sock_state = socket->sk->sk_state;
__entry->ino = (unsigned long long)inode->i_ino;
__assign_str(dstaddr,
xprt->address_strings[RPC_DISPLAY_ADDR]);
__assign_str(dstport,
xprt->address_strings[RPC_DISPLAY_PORT]);
),
TP_printk(
"socket:[%llu] dstaddr=%s/%s "
"state=%u (%s) sk_state=%u (%s)",
__entry->ino, __get_str(dstaddr), __get_str(dstport),
__entry->socket_state,
rpc_show_socket_state(__entry->socket_state),
__entry->sock_state,
rpc_show_sock_state(__entry->sock_state)
)
);
#define DEFINE_RPC_SOCKET_EVENT(name) \
DEFINE_EVENT(xs_socket_event, name, \
TP_PROTO( \
struct rpc_xprt *xprt, \
struct socket *socket \
), \
TP_ARGS(xprt, socket))
DECLARE_EVENT_CLASS(xs_socket_event_done,
TP_PROTO(
struct rpc_xprt *xprt,
struct socket *socket,
int error
),
TP_ARGS(xprt, socket, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, socket_state)
__field(unsigned int, sock_state)
__field(unsigned long long, ino)
__string(dstaddr,
xprt->address_strings[RPC_DISPLAY_ADDR])
__string(dstport,
xprt->address_strings[RPC_DISPLAY_PORT])
),
TP_fast_assign(
struct inode *inode = SOCK_INODE(socket);
__entry->socket_state = socket->state;
__entry->sock_state = socket->sk->sk_state;
__entry->ino = (unsigned long long)inode->i_ino;
__entry->error = error;
__assign_str(dstaddr,
xprt->address_strings[RPC_DISPLAY_ADDR]);
__assign_str(dstport,
xprt->address_strings[RPC_DISPLAY_PORT]);
),
TP_printk(
"error=%d socket:[%llu] dstaddr=%s/%s "
"state=%u (%s) sk_state=%u (%s)",
__entry->error,
__entry->ino, __get_str(dstaddr), __get_str(dstport),
__entry->socket_state,
rpc_show_socket_state(__entry->socket_state),
__entry->sock_state,
rpc_show_sock_state(__entry->sock_state)
)
);
#define DEFINE_RPC_SOCKET_EVENT_DONE(name) \
DEFINE_EVENT(xs_socket_event_done, name, \
TP_PROTO( \
struct rpc_xprt *xprt, \
struct socket *socket, \
int error \
), \
TP_ARGS(xprt, socket, error))
DEFINE_RPC_SOCKET_EVENT(rpc_socket_state_change);
DEFINE_RPC_SOCKET_EVENT_DONE(rpc_socket_connect);
DEFINE_RPC_SOCKET_EVENT_DONE(rpc_socket_error);
DEFINE_RPC_SOCKET_EVENT_DONE(rpc_socket_reset_connection);
DEFINE_RPC_SOCKET_EVENT(rpc_socket_close);
DEFINE_RPC_SOCKET_EVENT(rpc_socket_shutdown);
DECLARE_EVENT_CLASS(rpc_xprt_event,
TP_PROTO(struct rpc_xprt *xprt, __be32 xid, int status),
TP_ARGS(xprt, xid, status),
TP_STRUCT__entry(
__field(__be32, xid)
__field(int, status)
__string(addr, xprt->address_strings[RPC_DISPLAY_ADDR])
__string(port, xprt->address_strings[RPC_DISPLAY_PORT])
),
TP_fast_assign(
__entry->xid = xid;
__entry->status = status;
__assign_str(addr, xprt->address_strings[RPC_DISPLAY_ADDR]);
__assign_str(port, xprt->address_strings[RPC_DISPLAY_PORT]);
),
TP_printk("peer=[%s]:%s xid=0x%x status=%d", __get_str(addr),
__get_str(port), be32_to_cpu(__entry->xid),
__entry->status)
);
DEFINE_EVENT(rpc_xprt_event, xprt_lookup_rqst,
TP_PROTO(struct rpc_xprt *xprt, __be32 xid, int status),
TP_ARGS(xprt, xid, status));
DEFINE_EVENT(rpc_xprt_event, xprt_transmit,
TP_PROTO(struct rpc_xprt *xprt, __be32 xid, int status),
TP_ARGS(xprt, xid, status));
DEFINE_EVENT(rpc_xprt_event, xprt_complete_rqst,
TP_PROTO(struct rpc_xprt *xprt, __be32 xid, int status),
TP_ARGS(xprt, xid, status));
TRACE_EVENT(xs_tcp_data_ready,
TP_PROTO(struct rpc_xprt *xprt, int err, unsigned int total),
TP_ARGS(xprt, err, total),
TP_STRUCT__entry(
__field(int, err)
__field(unsigned int, total)
__string(addr, xprt ? xprt->address_strings[RPC_DISPLAY_ADDR] :
"(null)")
__string(port, xprt ? xprt->address_strings[RPC_DISPLAY_PORT] :
"(null)")
),
TP_fast_assign(
__entry->err = err;
__entry->total = total;
__assign_str(addr, xprt ?
xprt->address_strings[RPC_DISPLAY_ADDR] : "(null)");
__assign_str(port, xprt ?
xprt->address_strings[RPC_DISPLAY_PORT] : "(null)");
),
TP_printk("peer=[%s]:%s err=%d total=%u", __get_str(addr),
__get_str(port), __entry->err, __entry->total)
);
#define rpc_show_sock_xprt_flags(flags) \
__print_flags(flags, "|", \
{ TCP_RCV_LAST_FRAG, "TCP_RCV_LAST_FRAG" }, \
{ TCP_RCV_COPY_FRAGHDR, "TCP_RCV_COPY_FRAGHDR" }, \
{ TCP_RCV_COPY_XID, "TCP_RCV_COPY_XID" }, \
{ TCP_RCV_COPY_DATA, "TCP_RCV_COPY_DATA" }, \
{ TCP_RCV_READ_CALLDIR, "TCP_RCV_READ_CALLDIR" }, \
{ TCP_RCV_COPY_CALLDIR, "TCP_RCV_COPY_CALLDIR" }, \
{ TCP_RPC_REPLY, "TCP_RPC_REPLY" })
TRACE_EVENT(xs_tcp_data_recv,
TP_PROTO(struct sock_xprt *xs),
TP_ARGS(xs),
TP_STRUCT__entry(
__string(addr, xs->xprt.address_strings[RPC_DISPLAY_ADDR])
__string(port, xs->xprt.address_strings[RPC_DISPLAY_PORT])
__field(__be32, xid)
__field(unsigned long, flags)
__field(unsigned long, copied)
__field(unsigned int, reclen)
__field(unsigned long, offset)
),
TP_fast_assign(
__assign_str(addr, xs->xprt.address_strings[RPC_DISPLAY_ADDR]);
__assign_str(port, xs->xprt.address_strings[RPC_DISPLAY_PORT]);
__entry->xid = xs->tcp_xid;
__entry->flags = xs->tcp_flags;
__entry->copied = xs->tcp_copied;
__entry->reclen = xs->tcp_reclen;
__entry->offset = xs->tcp_offset;
),
TP_printk("peer=[%s]:%s xid=0x%x flags=%s copied=%lu reclen=%u offset=%lu",
__get_str(addr), __get_str(port), be32_to_cpu(__entry->xid),
rpc_show_sock_xprt_flags(__entry->flags),
__entry->copied, __entry->reclen, __entry->offset)
);
#define show_rqstp_flags(flags) \
__print_flags(flags, "|", \
{ (1UL << RQ_SECURE), "RQ_SECURE"}, \
{ (1UL << RQ_LOCAL), "RQ_LOCAL"}, \
{ (1UL << RQ_USEDEFERRAL), "RQ_USEDEFERRAL"}, \
{ (1UL << RQ_DROPME), "RQ_DROPME"}, \
{ (1UL << RQ_SPLICE_OK), "RQ_SPLICE_OK"}, \
{ (1UL << RQ_VICTIM), "RQ_VICTIM"}, \
{ (1UL << RQ_BUSY), "RQ_BUSY"})
TRACE_EVENT(svc_recv,
TP_PROTO(struct svc_rqst *rqst, int status),
TP_ARGS(rqst, status),
TP_STRUCT__entry(
__field(struct sockaddr *, addr)
__field(__be32, xid)
__field(int, status)
__field(unsigned long, flags)
),
TP_fast_assign(
__entry->addr = (struct sockaddr *)&rqst->rq_addr;
__entry->xid = status > 0 ? rqst->rq_xid : 0;
__entry->status = status;
__entry->flags = rqst->rq_flags;
),
TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s", __entry->addr,
be32_to_cpu(__entry->xid), __entry->status,
show_rqstp_flags(__entry->flags))
);
DECLARE_EVENT_CLASS(svc_rqst_status,
TP_PROTO(struct svc_rqst *rqst, int status),
TP_ARGS(rqst, status),
TP_STRUCT__entry(
__field(struct sockaddr *, addr)
__field(__be32, xid)
__field(int, dropme)
__field(int, status)
__field(unsigned long, flags)
),
TP_fast_assign(
__entry->addr = (struct sockaddr *)&rqst->rq_addr;
__entry->xid = rqst->rq_xid;
__entry->status = status;
__entry->flags = rqst->rq_flags;
),
TP_printk("addr=%pIScp rq_xid=0x%x status=%d flags=%s",
__entry->addr, be32_to_cpu(__entry->xid),
__entry->status, show_rqstp_flags(__entry->flags))
);
DEFINE_EVENT(svc_rqst_status, svc_process,
TP_PROTO(struct svc_rqst *rqst, int status),
TP_ARGS(rqst, status));
DEFINE_EVENT(svc_rqst_status, svc_send,
TP_PROTO(struct svc_rqst *rqst, int status),
TP_ARGS(rqst, status));
#define show_svc_xprt_flags(flags) \
__print_flags(flags, "|", \
{ (1UL << XPT_BUSY), "XPT_BUSY"}, \
{ (1UL << XPT_CONN), "XPT_CONN"}, \
{ (1UL << XPT_CLOSE), "XPT_CLOSE"}, \
{ (1UL << XPT_DATA), "XPT_DATA"}, \
{ (1UL << XPT_TEMP), "XPT_TEMP"}, \
{ (1UL << XPT_DEAD), "XPT_DEAD"}, \
{ (1UL << XPT_CHNGBUF), "XPT_CHNGBUF"}, \
{ (1UL << XPT_DEFERRED), "XPT_DEFERRED"}, \
{ (1UL << XPT_OLD), "XPT_OLD"}, \
{ (1UL << XPT_LISTENER), "XPT_LISTENER"}, \
{ (1UL << XPT_CACHE_AUTH), "XPT_CACHE_AUTH"}, \
{ (1UL << XPT_LOCAL), "XPT_LOCAL"})
TRACE_EVENT(svc_xprt_do_enqueue,
TP_PROTO(struct svc_xprt *xprt, struct svc_rqst *rqst),
TP_ARGS(xprt, rqst),
TP_STRUCT__entry(
__field(struct svc_xprt *, xprt)
__field_struct(struct sockaddr_storage, ss)
__field(int, pid)
__field(unsigned long, flags)
),
TP_fast_assign(
__entry->xprt = xprt;
xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
__entry->pid = rqst? rqst->rq_task->pid : 0;
__entry->flags = xprt ? xprt->xpt_flags : 0;
),
TP_printk("xprt=0x%p addr=%pIScp pid=%d flags=%s", __entry->xprt,
(struct sockaddr *)&__entry->ss,
__entry->pid, show_svc_xprt_flags(__entry->flags))
);
TRACE_EVENT(svc_xprt_dequeue,
TP_PROTO(struct svc_xprt *xprt),
TP_ARGS(xprt),
TP_STRUCT__entry(
__field(struct svc_xprt *, xprt)
__field_struct(struct sockaddr_storage, ss)
__field(unsigned long, flags)
),
TP_fast_assign(
__entry->xprt = xprt,
xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
__entry->flags = xprt ? xprt->xpt_flags : 0;
),
TP_printk("xprt=0x%p addr=%pIScp flags=%s", __entry->xprt,
(struct sockaddr *)&__entry->ss,
show_svc_xprt_flags(__entry->flags))
);
TRACE_EVENT(svc_wake_up,
TP_PROTO(int pid),
TP_ARGS(pid),
TP_STRUCT__entry(
__field(int, pid)
),
TP_fast_assign(
__entry->pid = pid;
),
TP_printk("pid=%d", __entry->pid)
);
TRACE_EVENT(svc_handle_xprt,
TP_PROTO(struct svc_xprt *xprt, int len),
TP_ARGS(xprt, len),
TP_STRUCT__entry(
__field(struct svc_xprt *, xprt)
__field(int, len)
__field_struct(struct sockaddr_storage, ss)
__field(unsigned long, flags)
),
TP_fast_assign(
__entry->xprt = xprt;
xprt ? memcpy(&__entry->ss, &xprt->xpt_remote, sizeof(__entry->ss)) : memset(&__entry->ss, 0, sizeof(__entry->ss));
__entry->len = len;
__entry->flags = xprt ? xprt->xpt_flags : 0;
),
TP_printk("xprt=0x%p addr=%pIScp len=%d flags=%s", __entry->xprt,
(struct sockaddr *)&__entry->ss,
__entry->len, show_svc_xprt_flags(__entry->flags))
);
#endif /* _TRACE_SUNRPC_H */
#include <trace/define_trace.h>
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