On 4/9/25 10:32 AM, Jeff Layton wrote:
> ...and remove the legacy dprintks.
>
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> fs/nfsd/nfs3proc.c | 18 +++++-------------
> fs/nfsd/nfs4proc.c | 29 +++++++++++++++++++++++++++++
> fs/nfsd/nfsproc.c | 6 +++---
> fs/nfsd/trace.h | 39 +++++++++++++++++++++++++++++++++++++++
> 4 files changed, 76 insertions(+), 16 deletions(-)
>
> diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
> index 372bdcf5e07a5c835da240ecebb02e3576eb2ca6..ea1280970ea11b2a82f0de88ad0422eef7063d6d 100644
> --- a/fs/nfsd/nfs3proc.c
> +++ b/fs/nfsd/nfs3proc.c
> @@ -14,6 +14,7 @@
> #include "xdr3.h"
> #include "vfs.h"
> #include "filecache.h"
> +#include "trace.h"
>
> #define NFSDDBG_FACILITY NFSDDBG_PROC
>
> @@ -380,10 +381,7 @@ nfsd3_proc_create(struct svc_rqst *rqstp)
> struct nfsd3_diropres *resp = rqstp->rq_resp;
> svc_fh *dirfhp, *newfhp;
>
> - dprintk("nfsd: CREATE(3) %s %.*s\n",
> - SVCFH_fmt(&argp->fh),
> - argp->len,
> - argp->name);
> + trace_nfsd3_proc_create(rqstp, &argp->fh, S_IFREG, argp->name, argp->len);
>
> dirfhp = fh_copy(&resp->dirfh, &argp->fh);
> newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
> @@ -405,10 +403,7 @@ nfsd3_proc_mkdir(struct svc_rqst *rqstp)
> .na_iattr = &argp->attrs,
> };
>
> - dprintk("nfsd: MKDIR(3) %s %.*s\n",
> - SVCFH_fmt(&argp->fh),
> - argp->len,
> - argp->name);
> + trace_nfsd3_proc_mkdir(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len);
>
> argp->attrs.ia_valid &= ~ATTR_SIZE;
> fh_copy(&resp->dirfh, &argp->fh);
> @@ -471,13 +466,10 @@ nfsd3_proc_mknod(struct svc_rqst *rqstp)
> struct nfsd_attrs attrs = {
> .na_iattr = &argp->attrs,
> };
> - int type;
> + int type = nfs3_ftypes[argp->ftype];
> dev_t rdev = 0;
>
> - dprintk("nfsd: MKNOD(3) %s %.*s\n",
> - SVCFH_fmt(&argp->fh),
> - argp->len,
> - argp->name);
> + trace_nfsd3_proc_mknod(rqstp, &argp->fh, type, argp->name, argp->len);
>
> fh_copy(&resp->dirfh, &argp->fh);
> fh_init(&resp->fh, NFS3_FHSIZE);
> diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
> index 6e23d6103010197c0316b07c189fe12ec3033812..2c795103deaa4044596bd07d90db788169a32a0c 100644
> --- a/fs/nfsd/nfs4proc.c
> +++ b/fs/nfsd/nfs4proc.c
> @@ -250,6 +250,8 @@ nfsd4_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp,
> __be32 status;
> int host_err;
>
> + trace_nfsd4_create_file(rqstp, fhp, S_IFREG, open->op_fname, open->op_fnamelen);
> +
> if (isdotent(open->op_fname, open->op_fnamelen))
> return nfserr_exist;
> if (!(iap->ia_valid & ATTR_MODE))
> @@ -807,6 +809,29 @@ nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> return status;
> }
>
> +static umode_t nfs_type_to_vfs_type(enum nfs_ftype4 nfstype)
> +{
> + switch (nfstype) {
> + case NF4REG:
> + return S_IFREG;
> + case NF4DIR:
> + return S_IFDIR;
> + case NF4BLK:
> + return S_IFBLK;
> + case NF4CHR:
> + return S_IFCHR;
> + case NF4LNK:
> + return S_IFLNK;
> + case NF4SOCK:
> + return S_IFSOCK;
> + case NF4FIFO:
> + return S_IFIFO;
> + default:
> + break;
> + }
> + return 0;
> +}
> +
Wondering what happens when trace points are disabled in the kernel
build. Maybe this helper belongs in fs/nfsd/trace.h instead as a
macro wrapper for __print_symbolic(). But see below.
> static __be32
> nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> union nfsd4_op_u *u)
> @@ -822,6 +847,10 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> __be32 status;
> dev_t rdev;
>
> + trace_nfsd4_create(rqstp, &cstate->current_fh,
> + nfs_type_to_vfs_type(create->cr_type),
> + create->cr_name, create->cr_namelen);
> +
> fh_init(&resfh, NFS4_FHSIZE);
>
> status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP);
> diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
> index 6dda081eb24c00b834ab0965c3a35a12115bceb7..33d8cbf8785588d38d4ec5efd769c1d1d06c6a91 100644
> --- a/fs/nfsd/nfsproc.c
> +++ b/fs/nfsd/nfsproc.c
> @@ -10,6 +10,7 @@
> #include "cache.h"
> #include "xdr.h"
> #include "vfs.h"
> +#include "trace.h"
>
> #define NFSDDBG_FACILITY NFSDDBG_PROC
>
> @@ -292,8 +293,7 @@ nfsd_proc_create(struct svc_rqst *rqstp)
> int hosterr;
> dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
>
> - dprintk("nfsd: CREATE %s %.*s\n",
> - SVCFH_fmt(dirfhp), argp->len, argp->name);
> + trace_nfsd_proc_create(rqstp, dirfhp, S_IFREG, argp->name, argp->len);
>
> /* First verify the parent file handle */
> resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
> @@ -548,7 +548,7 @@ nfsd_proc_mkdir(struct svc_rqst *rqstp)
> .na_iattr = &argp->attrs,
> };
>
> - dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
> + trace_nfsd_proc_mkdir(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len);
>
> if (resp->fh.fh_dentry) {
> printk(KERN_WARNING
> diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
> index 382849d7c321d6ded8213890c2e7075770aa716c..c6aff23a845f06c87e701d57ec577c2c5c5a743c 100644
> --- a/fs/nfsd/trace.h
> +++ b/fs/nfsd/trace.h
> @@ -2391,6 +2391,45 @@ TRACE_EVENT(nfsd_lookup_dentry,
> TP_printk("xid=0x%08x fh_hash=0x%08x name=%s",
> __entry->xid, __entry->fh_hash, __get_str(name))
> );
> +
> +DECLARE_EVENT_CLASS(nfsd_vfs_create_class,
> + TP_PROTO(struct svc_rqst *rqstp,
> + struct svc_fh *fhp,
> + umode_t type,
> + const char *name,
> + unsigned int len),
> + TP_ARGS(rqstp, fhp, type, name, len),
> + TP_STRUCT__entry(
> + SVC_RQST_ENDPOINT_FIELDS(rqstp)
> + __field(u32, fh_hash)
> + __field(umode_t, type)
> + __string_len(name, name, len)
> + ),
> + TP_fast_assign(
> + SVC_RQST_ENDPOINT_ASSIGNMENTS(rqstp);
> + __entry->fh_hash = knfsd_fh_hash(&fhp->fh_handle);
> + __entry->type = type;
> + __assign_str(name);
> + ),
> + TP_printk("xid=0x%08x fh_hash=0x%08x type=%s name=%s",
> + __entry->xid, __entry->fh_hash,
> + show_fs_file_type(__entry->type), __get_str(name))
> +);
> +
> +#define DEFINE_NFSD_VFS_CREATE_EVENT(__name) \
> + DEFINE_EVENT(nfsd_vfs_create_class, __name, \
> + TP_PROTO(struct svc_rqst *rqstp, struct svc_fh *fhp, \
> + umode_t type, const char *name, unsigned int len), \
> + TP_ARGS(rqstp, fhp, type, name, len))
> +
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd_proc_create);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd_proc_mkdir);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd3_proc_create);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd3_proc_mkdir);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd3_proc_mknod);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd4_create);
> +DEFINE_NFSD_VFS_CREATE_EVENT(nfsd4_create_file);
I think we would be better off with one or two new trace points in
nfsd_create() and nfsd_create_setattr() instead of all of these...
Unless I've missed what you are trying to observe...?
> +
> #endif /* _NFSD_TRACE_H */
>
> #undef TRACE_INCLUDE_PATH
>
--
Chuck Lever
