diff options
| author | Jeff Layton <jlayton@kernel.org> | 2025-06-18 09:19:14 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2025-07-14 15:20:27 -0700 |
| commit | 5dd03d14b3a9595ea320a55c499ebf85b422392f (patch) | |
| tree | e5b657db1002f423e8c47350bab7b4a1ae51adee | |
| parent | 0139a30ada76d154ff48dfe7a1d2056f7d7ae023 (diff) | |
nfs: new tracepoint in nfs_delegation_need_return
Add a tracepoint in the function that decides whether to return a
delegation to the server.
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20250618-nfs-tracepoints-v2-3-540c9fb48da2@kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
| -rw-r--r-- | fs/nfs/delegation.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4trace.h | 47 |
2 files changed, 49 insertions, 0 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 78a97d340bbd..6f136c47eed7 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -594,6 +594,8 @@ static bool nfs_delegation_need_return(struct nfs_delegation *delegation) { bool ret = false; + trace_nfs_delegation_need_return(delegation); + if (test_and_clear_bit(NFS_DELEGATION_RETURN, &delegation->flags)) ret = true; if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags) || diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index 674f15e91c54..6ab05261ce34 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -14,6 +14,8 @@ #include <trace/misc/fs.h> #include <trace/misc/nfs.h> +#include "delegation.h" + #define show_nfs_fattr_flags(valid) \ __print_flags((unsigned long)valid, "|", \ { NFS_ATTR_FATTR_TYPE, "TYPE" }, \ @@ -985,6 +987,51 @@ DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_set_delegation); DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_reclaim_delegation); DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_detach_delegation); +#define show_delegation_flags(flags) \ + __print_flags(flags, "|", \ + { BIT(NFS_DELEGATION_NEED_RECLAIM), "NEED_RECLAIM" }, \ + { BIT(NFS_DELEGATION_RETURN), "RETURN" }, \ + { BIT(NFS_DELEGATION_RETURN_IF_CLOSED), "RETURN_IF_CLOSED" }, \ + { BIT(NFS_DELEGATION_REFERENCED), "REFERENCED" }, \ + { BIT(NFS_DELEGATION_RETURNING), "RETURNING" }, \ + { BIT(NFS_DELEGATION_REVOKED), "REVOKED" }, \ + { BIT(NFS_DELEGATION_TEST_EXPIRED), "TEST_EXPIRED" }, \ + { BIT(NFS_DELEGATION_INODE_FREEING), "INODE_FREEING" }, \ + { BIT(NFS_DELEGATION_RETURN_DELAYED), "RETURN_DELAYED" }) + +DECLARE_EVENT_CLASS(nfs4_delegation_event, + TP_PROTO( + const struct nfs_delegation *delegation + ), + + TP_ARGS(delegation), + + TP_STRUCT__entry( + __field(u32, fhandle) + __field(unsigned int, fmode) + __field(unsigned long, flags) + ), + + TP_fast_assign( + __entry->fhandle = nfs_fhandle_hash(NFS_FH(delegation->inode)); + __entry->fmode = delegation->type; + __entry->flags = delegation->flags; + ), + + TP_printk( + "fhandle=0x%08x fmode=%s flags=%s", + __entry->fhandle, show_fs_fmode_flags(__entry->fmode), + show_delegation_flags(__entry->flags) + ) +); +#define DEFINE_NFS4_DELEGATION_EVENT(name) \ + DEFINE_EVENT(nfs4_delegation_event, name, \ + TP_PROTO( \ + const struct nfs_delegation *delegation \ + ), \ + TP_ARGS(delegation)) +DEFINE_NFS4_DELEGATION_EVENT(nfs_delegation_need_return); + TRACE_EVENT(nfs4_delegreturn_exit, TP_PROTO( const struct nfs4_delegreturnargs *args, |