From 2f90e18ffec47c265c14e313047189b79784bc0e Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 3 Mar 2023 07:16:03 -0500 Subject: lockd: add some client-side tracepoints Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/lockd/Makefile | 6 ++- fs/lockd/clntlock.c | 4 ++ fs/lockd/clntproc.c | 14 +++++++ fs/lockd/trace.c | 3 ++ fs/lockd/trace.h | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 131 insertions(+), 2 deletions(-) create mode 100644 fs/lockd/trace.c create mode 100644 fs/lockd/trace.h (limited to 'fs/lockd') diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile index 6d5e83ed4476..ac9f9d84510e 100644 --- a/fs/lockd/Makefile +++ b/fs/lockd/Makefile @@ -3,10 +3,12 @@ # Makefile for the linux lock manager stuff # +ccflags-y += -I$(src) # needed for trace events + obj-$(CONFIG_LOCKD) += lockd.o -lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \ - svcshare.o svcproc.o svcsubs.o mon.o xdr.o +lockd-objs-y += clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \ + svcshare.o svcproc.o svcsubs.o mon.o trace.o xdr.o lockd-objs-$(CONFIG_LOCKD_V4) += clnt4xdr.o xdr4.o svc4proc.o lockd-objs-$(CONFIG_PROC_FS) += procfs.o lockd-objs := $(lockd-objs-y) diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index c374ee072db3..e3972aa3045a 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -14,9 +14,12 @@ #include #include #include +#include #include #include +#include "trace.h" + #define NLMDBG_FACILITY NLMDBG_CLIENT /* @@ -186,6 +189,7 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock) res = nlm_granted; } spin_unlock(&nlm_blocked_lock); + trace_nlmclnt_grant(lock, addr, svc_addr_len(addr), res); return res; } diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index a14c9110719c..fba6c7fa7474 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -20,6 +20,8 @@ #include #include +#include "trace.h" + #define NLMDBG_FACILITY NLMDBG_CLIENT #define NLMCLNT_GRACE_WAIT (5*HZ) #define NLMCLNT_POLL_TIMEOUT (30*HZ) @@ -451,6 +453,9 @@ nlmclnt_test(struct nlm_rqst *req, struct file_lock *fl) status = nlm_stat_to_errno(req->a_res.status); } out: + trace_nlmclnt_test(&req->a_args.lock, + (const struct sockaddr *)&req->a_host->h_addr, + req->a_host->h_addrlen, req->a_res.status); nlmclnt_release_call(req); return status; } @@ -605,10 +610,16 @@ again: else status = nlm_stat_to_errno(resp->status); out: + trace_nlmclnt_lock(&req->a_args.lock, + (const struct sockaddr *)&req->a_host->h_addr, + req->a_host->h_addrlen, req->a_res.status); nlmclnt_release_call(req); return status; out_unlock: /* Fatal error: ensure that we remove the lock altogether */ + trace_nlmclnt_lock(&req->a_args.lock, + (const struct sockaddr *)&req->a_host->h_addr, + req->a_host->h_addrlen, req->a_res.status); dprintk("lockd: lock attempt ended in fatal error.\n" " Attempting to unlock.\n"); fl_type = fl->fl_type; @@ -704,6 +715,9 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl) /* What to do now? I'm out of my depth... */ status = -ENOLCK; out: + trace_nlmclnt_unlock(&req->a_args.lock, + (const struct sockaddr *)&req->a_host->h_addr, + req->a_host->h_addrlen, req->a_res.status); nlmclnt_release_call(req); return status; } diff --git a/fs/lockd/trace.c b/fs/lockd/trace.c new file mode 100644 index 000000000000..d9a6ff6e673c --- /dev/null +++ b/fs/lockd/trace.c @@ -0,0 +1,3 @@ +// SPDX-License-Identifier: GPL-2.0 +#define CREATE_TRACE_POINTS +#include "trace.h" diff --git a/fs/lockd/trace.h b/fs/lockd/trace.h new file mode 100644 index 000000000000..7461b13b6e74 --- /dev/null +++ b/fs/lockd/trace.h @@ -0,0 +1,106 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM lockd + +#if !defined(_TRACE_LOCKD_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_LOCKD_H + +#include +#include +#include +#include + +#ifdef CONFIG_LOCKD_V4 +#define NLM_STATUS_LIST \ + nlm_status_code(LCK_GRANTED) \ + nlm_status_code(LCK_DENIED) \ + nlm_status_code(LCK_DENIED_NOLOCKS) \ + nlm_status_code(LCK_BLOCKED) \ + nlm_status_code(LCK_DENIED_GRACE_PERIOD) \ + nlm_status_code(DEADLCK) \ + nlm_status_code(ROFS) \ + nlm_status_code(STALE_FH) \ + nlm_status_code(FBIG) \ + nlm_status_code_end(FAILED) +#else +#define NLM_STATUS_LIST \ + nlm_status_code(LCK_GRANTED) \ + nlm_status_code(LCK_DENIED) \ + nlm_status_code(LCK_DENIED_NOLOCKS) \ + nlm_status_code(LCK_BLOCKED) \ + nlm_status_code_end(LCK_DENIED_GRACE_PERIOD) +#endif + +#undef nlm_status_code +#undef nlm_status_code_end +#define nlm_status_code(x) TRACE_DEFINE_ENUM(NLM_##x); +#define nlm_status_code_end(x) TRACE_DEFINE_ENUM(NLM_##x); + +NLM_STATUS_LIST + +#undef nlm_status_code +#undef nlm_status_code_end +#define nlm_status_code(x) { NLM_##x, #x }, +#define nlm_status_code_end(x) { NLM_##x, #x } + +#define show_nlm_status(x) __print_symbolic(x, NLM_STATUS_LIST) + +DECLARE_EVENT_CLASS(nlmclnt_lock_event, + TP_PROTO( + const struct nlm_lock *lock, + const struct sockaddr *addr, + unsigned int addrlen, + __be32 status + ), + + TP_ARGS(lock, addr, addrlen, status), + + TP_STRUCT__entry( + __field(u32, oh) + __field(u32, svid) + __field(u32, fh) + __field(unsigned long, status) + __field(u64, start) + __field(u64, len) + __sockaddr(addr, addrlen) + ), + + TP_fast_assign( + __entry->oh = ~crc32_le(0xffffffff, lock->oh.data, lock->oh.len); + __entry->svid = lock->svid; + __entry->fh = nfs_fhandle_hash(&lock->fh); + __entry->start = lock->lock_start; + __entry->len = lock->lock_len; + __entry->status = be32_to_cpu(status); + __assign_sockaddr(addr, addr, addrlen); + ), + + TP_printk( + "addr=%pISpc oh=0x%08x svid=0x%08x fh=0x%08x start=%llu len=%llu status=%s", + __get_sockaddr(addr), __entry->oh, __entry->svid, + __entry->fh, __entry->start, __entry->len, + show_nlm_status(__entry->status) + ) +); + +#define DEFINE_NLMCLNT_EVENT(name) \ + DEFINE_EVENT(nlmclnt_lock_event, name, \ + TP_PROTO( \ + const struct nlm_lock *lock, \ + const struct sockaddr *addr, \ + unsigned int addrlen, \ + __be32 status \ + ), \ + TP_ARGS(lock, addr, addrlen, status)) + +DEFINE_NLMCLNT_EVENT(nlmclnt_test); +DEFINE_NLMCLNT_EVENT(nlmclnt_lock); +DEFINE_NLMCLNT_EVENT(nlmclnt_unlock); +DEFINE_NLMCLNT_EVENT(nlmclnt_grant); + +#endif /* _TRACE_LOCKD_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#define TRACE_INCLUDE_FILE trace +#include -- cgit