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Mon, 8 May 2023 11:48:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 4nikLZ7hWGRbNwAAMHmgww (envelope-from ); Mon, 08 May 2023 11:48:46 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4a9abe30-ed96-11ed-b226-6b7b168915f2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1683546526; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mnbpAA3QXKNUb/jFQV/tu/cKYwrbS8V5R6aaB8qSn9w=; b=k1qGxR8D1soRWuKzMkIo7SCy0iOrTAzKydaicZsfSJ0WLR2XbBA+fbli+PcJ37z+8CMwWc p5dLNvt6OycJ7CkuPZUkeX0b8ZSFMF1gqhFG3gucESij+n7k0ca5kGXhMYaDMZhsWutWUJ NU5FBPgE/nx3LHn6PySQ2RiAGrmEJkg= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Julien Grall , Anthony PERARD , Julien Grall Subject: [PATCH v5 09/14] tools/xenstore: add TDB access trace support Date: Mon, 8 May 2023 13:47:49 +0200 Message-Id: <20230508114754.31514-10-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230508114754.31514-1-jgross@suse.com> References: <20230508114754.31514-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1683547096657100005 Content-Type: text/plain; charset="utf-8" Add a new trace switch "tdb" and the related trace calls. The "tdb" switch is off per default. Signed-off-by: Juergen Gross Reviewed-by: Julien Grall --- tools/xenstore/xenstored_core.c | 8 +++++++- tools/xenstore/xenstored_core.h | 7 +++++++ tools/xenstore/xenstored_transaction.c | 7 ++++++- 3 files changed, 20 insertions(+), 2 deletions(-) diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_cor= e.c index 15654730a6..3caf9e45dc 100644 --- a/tools/xenstore/xenstored_core.c +++ b/tools/xenstore/xenstored_core.c @@ -589,6 +589,8 @@ static void get_acc_data(TDB_DATA *key, struct node_acc= ount_data *acc) if (old_data.dptr =3D=3D NULL) { acc->memory =3D 0; } else { + trace_tdb("read %s size %zu\n", key->dptr, + old_data.dsize + key->dsize); hdr =3D (void *)old_data.dptr; acc->memory =3D old_data.dsize; acc->domid =3D hdr->perms[0].id; @@ -655,6 +657,7 @@ int do_tdb_write(struct connection *conn, TDB_DATA *key= , TDB_DATA *data, errno =3D EIO; return errno; } + trace_tdb("store %s size %zu\n", key->dptr, data->dsize + key->dsize); =20 if (acc) { /* Don't use new_domid, as it might be a transaction node. */ @@ -682,6 +685,7 @@ int do_tdb_delete(struct connection *conn, TDB_DATA *ke= y, errno =3D EIO; return errno; } + trace_tdb("delete %s\n", key->dptr); =20 if (acc->memory) { domid =3D get_acc_domid(conn, key, acc->domid); @@ -731,6 +735,8 @@ struct node *read_node(struct connection *conn, const v= oid *ctx, goto error; } =20 + trace_tdb("read %s size %zu\n", key.dptr, data.dsize + key.dsize); + node->parent =3D NULL; talloc_steal(node, data.dptr); =20 @@ -2750,7 +2756,7 @@ static void set_quota(const char *arg, bool soft) =20 /* Sorted by bit values of TRACE_* flags. Flag is (1u << index). */ const char *const trace_switches[] =3D { - "obj", "io", "wrl", "acc", + "obj", "io", "wrl", "acc", "tdb", NULL }; =20 diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_cor= e.h index 3e0734a6c6..5a11dc1231 100644 --- a/tools/xenstore/xenstored_core.h +++ b/tools/xenstore/xenstored_core.h @@ -303,9 +303,16 @@ extern unsigned int trace_flags; #define TRACE_IO 0x00000002 #define TRACE_WRL 0x00000004 #define TRACE_ACC 0x00000008 +#define TRACE_TDB 0x00000010 extern const char *const trace_switches[]; int set_trace_switch(const char *arg); =20 +#define trace_tdb(...) \ +do { \ + if (trace_flags & TRACE_TDB) \ + trace("tdb: " __VA_ARGS__); \ +} while (0) + extern TDB_CONTEXT *tdb_ctx; extern int dom0_domid; extern int dom0_event; diff --git a/tools/xenstore/xenstored_transaction.c b/tools/xenstore/xensto= red_transaction.c index 2b15506953..11c8bcec84 100644 --- a/tools/xenstore/xenstored_transaction.c +++ b/tools/xenstore/xenstored_transaction.c @@ -374,8 +374,11 @@ static int finalize_transaction(struct connection *con= n, if (tdb_error(tdb_ctx) !=3D TDB_ERR_NOEXIST) return EIO; gen =3D NO_GENERATION; - } else + } else { + trace_tdb("read %s size %zu\n", key.dptr, + key.dsize + data.dsize); gen =3D hdr->generation; + } talloc_free(data.dptr); if (i->generation !=3D gen) return EAGAIN; @@ -399,6 +402,8 @@ static int finalize_transaction(struct connection *conn, set_tdb_key(i->trans_name, &ta_key); data =3D tdb_fetch(tdb_ctx, ta_key); if (data.dptr) { + trace_tdb("read %s size %zu\n", ta_key.dptr, + ta_key.dsize + data.dsize); hdr =3D (void *)data.dptr; hdr->generation =3D ++generation; *is_corrupt |=3D do_tdb_write(conn, &key, &data, --=20 2.35.3