diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2020-05-02 11:34:40 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-05-20 17:30:34 -0400 |
| commit | 0b175b18648ebedfe255b11a7792f1d76848a8f7 (patch) | |
| tree | 398048ec7257a55d9a16938770e3fced9941db81 /fs/nfsd/trace.h | |
| parent | d88ff9587bce1c962835017d2b2c449b2e6bb500 (diff) | |
NFSD: Add tracepoints to NFSD's duplicate reply cache
Try to capture DRC failures.
Two additional clean-ups:
- Introduce Doxygen-style comments for the main entry points
- Remove a dprintk that fires for an allocation failure. This was
the only dprintk in the REPCACHE class.
Reported-by: kbuild test robot <lkp@intel.com>
[ cel: force typecast for display of checksum values ]
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 78c574251c60..371dc198d28e 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -432,6 +432,65 @@ TRACE_EVENT(nfsd_file_fsnotify_handle_event, __entry->nlink, __entry->mode, __entry->mask) ); +#include "cache.h" + +TRACE_DEFINE_ENUM(RC_DROPIT); +TRACE_DEFINE_ENUM(RC_REPLY); +TRACE_DEFINE_ENUM(RC_DOIT); + +#define show_drc_retval(x) \ + __print_symbolic(x, \ + { RC_DROPIT, "DROPIT" }, \ + { RC_REPLY, "REPLY" }, \ + { RC_DOIT, "DOIT" }) + +TRACE_EVENT(nfsd_drc_found, + TP_PROTO( + const struct nfsd_net *nn, + const struct svc_rqst *rqstp, + int result + ), + TP_ARGS(nn, rqstp, result), + TP_STRUCT__entry( + __field(unsigned long long, boot_time) + __field(unsigned long, result) + __field(u32, xid) + ), + TP_fast_assign( + __entry->boot_time = nn->boot_time; + __entry->result = result; + __entry->xid = be32_to_cpu(rqstp->rq_xid); + ), + TP_printk("boot_time=%16llx xid=0x%08x result=%s", + __entry->boot_time, __entry->xid, + show_drc_retval(__entry->result)) + +); + +TRACE_EVENT(nfsd_drc_mismatch, + TP_PROTO( + const struct nfsd_net *nn, + const struct svc_cacherep *key, + const struct svc_cacherep *rp + ), + TP_ARGS(nn, key, rp), + TP_STRUCT__entry( + __field(unsigned long long, boot_time) + __field(u32, xid) + __field(u32, cached) + __field(u32, ingress) + ), + TP_fast_assign( + __entry->boot_time = nn->boot_time; + __entry->xid = be32_to_cpu(key->c_key.k_xid); + __entry->cached = (__force u32)key->c_key.k_csum; + __entry->ingress = (__force u32)rp->c_key.k_csum; + ), + TP_printk("boot_time=%16llx xid=0x%08x cached-csum=0x%08x ingress-csum=0x%08x", + __entry->boot_time, __entry->xid, __entry->cached, + __entry->ingress) +); + #endif /* _NFSD_TRACE_H */ #undef TRACE_INCLUDE_PATH |