From nobody Sat Feb 7 07:45:37 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7B9EA280333; Sat, 3 May 2025 19:59:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746302388; cv=none; b=DBBt9QOtiiuyW6v7/ZlXovw+x1sWqU9nKVhzy+qpXcSZAdfMvOs0QYxKkBX0X0UrrBwpKvCuTFwPo/jad1xNhXH6EGoDc7DtCGjjCKp3qk8CduoFg6JPfKuAywGusMgZmvEDqrYre91vqun6CqQUw8bErCj6eEVkOYXs5wNJ0kA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746302388; c=relaxed/simple; bh=u8MwXtZfnrSUjQkKdU1yXQ7CiwJtv2xi+V8+9cmp40Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P/XzIw/d5mSHQgivOKpDV7dlLAf0eGFMwcdI36TFWOfYpZjYaE642oBdgN+DyYmg15hfkDmHNGvg6U2CiqoCY0EZRo1BWJJ/RTInMjW7tNMhOchdbG5dH5iWzNpK3me8Z/0dbrq0ZIb/+mcYBszjPDluhNzYSykVjqWbf1REELE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EH4Uj/mJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EH4Uj/mJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 360F5C4CEE3; Sat, 3 May 2025 19:59:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746302387; bh=u8MwXtZfnrSUjQkKdU1yXQ7CiwJtv2xi+V8+9cmp40Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EH4Uj/mJvcs7VuKi2TU00jSH1vyozPpCACpEQiBrxsXyOnDctbSQKlZ50oMB0i3b+ sFsT0lVRrGpW3BgUPBI7CrVzMeDoMDvnB9n/M48+pcaxYJaciXX57Mo0V+mR6mYDjX 8I67nk3Ai2td8gaZ199vsm8malM1FSvpi/Jd1f5TzKM59Zxcd2SImEhnUMdC3HzugE dz8+wSpQzDHNRe2tfAGeVPiUWkYp4E+Y64W3bi0+zfZNfaOUQJEGOKltFgyc/BCV9o AlgwU/x9bkN4wIcOmhyzaVCm4C2vKkw7s47WHyq748Zq9y8KSkXxHEOM3G+gBq8q/L iDc07OeZ8Ubvw== From: cel@kernel.org To: NeilBrown , Jeff Layton , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker Cc: sargun@sargun.me, , Subject: [PATCH v4 07/18] nfsd: add tracepoint to nfsd_link() Date: Sat, 3 May 2025 15:59:25 -0400 Message-ID: <20250503195936.5083-8-cel@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250503195936.5083-1-cel@kernel.org> References: <20250503195936.5083-1-cel@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jeff Layton Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/nfsd/trace.h | 27 +++++++++++++++++++++++++++ fs/nfsd/vfs.c | 2 ++ 2 files changed, 29 insertions(+) diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index e347cdaaa732..acbf94cfb720 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -2471,6 +2471,33 @@ TRACE_EVENT(nfsd_vfs_symlink, ) ); =20 +TRACE_EVENT(nfsd_vfs_link, + TP_PROTO( + const struct svc_rqst *rqstp, + const struct svc_fh *sfhp, + const struct svc_fh *tfhp, + const char *name, + unsigned int namelen + ), + TP_ARGS(rqstp, sfhp, tfhp, name, namelen), + TP_STRUCT__entry( + NFSD_TRACE_PROC_CALL_FIELDS(rqstp) + __field(u32, sfh_hash) + __field(u32, tfh_hash) + __string_len(name, name, namelen) + ), + TP_fast_assign( + NFSD_TRACE_PROC_CALL_ASSIGNMENTS(rqstp); + __entry->sfh_hash =3D knfsd_fh_hash(&sfhp->fh_handle); + __entry->tfh_hash =3D knfsd_fh_hash(&tfhp->fh_handle); + __assign_str(name); + ), + TP_printk("xid=3D0x%08x src_fh=3D0x%08x tgt_fh=3D0x%08x name=3D%s", + __entry->xid, __entry->sfh_hash, __entry->tfh_hash, + __get_str(name) + ) +); + #endif /* _NFSD_TRACE_H */ =20 #undef TRACE_INCLUDE_PATH diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index ecd453b260b6..30702f36db98 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1721,6 +1721,8 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, __be32 err; int host_err; =20 + trace_nfsd_vfs_link(rqstp, ffhp, tfhp, name, len); + err =3D fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_CREATE); if (err) goto out; --=20 2.49.0