diff options
| author | Jeff Layton <jlayton@poochiereds.net> | 2015-11-17 06:52:23 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2016-01-14 17:32:51 -0500 |
| commit | 6e8b50d16a757d53f8817acecba97c5d4aa1cf65 (patch) | |
| tree | 1d8846d614705a8475543c575e026e87e6b3eaa8 /fs/nfsd/trace.h | |
| parent | 6b9b21073d3b250e17812cd562fffc9006962b39 (diff) | |
| download | linux-6e8b50d16a757d53f8817acecba97c5d4aa1cf65.tar.gz linux-6e8b50d16a757d53f8817acecba97c5d4aa1cf65.tar.bz2 linux-6e8b50d16a757d53f8817acecba97c5d4aa1cf65.zip | |
nfsd: add new io class tracepoint
Add some new tracepoints in the nfsd read/write codepaths. The idea
is that this will give us the ability to measure how long each phase of
a read or write operation takes.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 0befe762762b..3287041905da 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -8,6 +8,47 @@ #define _NFSD_TRACE_H #include <linux/tracepoint.h> +#include "nfsfh.h" + +DECLARE_EVENT_CLASS(nfsd_io_class, + TP_PROTO(struct svc_rqst *rqstp, + struct svc_fh *fhp, + loff_t offset, + int len), + TP_ARGS(rqstp, fhp, offset, len), + TP_STRUCT__entry( + __field(__be32, xid) + __field_struct(struct knfsd_fh, fh) + __field(loff_t, offset) + __field(int, len) + ), + TP_fast_assign( + __entry->xid = rqstp->rq_xid, + fh_copy_shallow(&__entry->fh, &fhp->fh_handle); + __entry->offset = offset; + __entry->len = len; + ), + TP_printk("xid=0x%x fh=0x%x offset=%lld len=%d", + __be32_to_cpu(__entry->xid), knfsd_fh_hash(&__entry->fh), + __entry->offset, __entry->len) +) + +#define DEFINE_NFSD_IO_EVENT(name) \ +DEFINE_EVENT(nfsd_io_class, name, \ + TP_PROTO(struct svc_rqst *rqstp, \ + struct svc_fh *fhp, \ + loff_t offset, \ + int len), \ + TP_ARGS(rqstp, fhp, offset, len)) + +DEFINE_NFSD_IO_EVENT(read_start); +DEFINE_NFSD_IO_EVENT(read_opened); +DEFINE_NFSD_IO_EVENT(read_io_done); +DEFINE_NFSD_IO_EVENT(read_done); +DEFINE_NFSD_IO_EVENT(write_start); +DEFINE_NFSD_IO_EVENT(write_opened); +DEFINE_NFSD_IO_EVENT(write_io_done); +DEFINE_NFSD_IO_EVENT(write_done); #include "state.h" |