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Wed, 5 Apr 2023 07:04:02 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id NXw7I2IdLWRfEwAAMHmgww (envelope-from ); Wed, 05 Apr 2023 07:04:02 +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: 0bfdcdaa-d380-11ed-85db-49a42c6b2330 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1680678242; 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=JlFoqnoU3I4JMyJapnFZtevlraEzWmolnTL1zQ4kqcs=; b=DDAP5/NyAduIWDEb6ICBx4jdNEjhte34fHoXhVU634jNXxaIfwnKOrqGKNI6jeg6ph566v KkAXwau9ss9pN8JmnivV8yWp18Ak6MDK0OfL+QBwKc0N0CJhcN/LNEJ3kRN5lboJWw0jU+ I9r22p9nwPylJiSigy3yVyLqeuejJZA= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Julien Grall , Anthony PERARD , Julien Grall Subject: [PATCH v4 02/13] tools/xenstore: manage per-transaction domain accounting data in an array Date: Wed, 5 Apr 2023 09:03:38 +0200 Message-Id: <20230405070349.25293-3-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230405070349.25293-1-jgross@suse.com> References: <20230405070349.25293-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1680678268965100003 Content-Type: text/plain; charset="utf-8" In order to prepare keeping accounting data in an array instead of using independent fields, switch the struct changed_domain accounting data to that scheme, for now only using an array with one element. In order to be able to extend this scheme add the needed indexing enum to xenstored_domain.h. Signed-off-by: Juergen Gross Reviewed-by: Julien Grall --- V2: - make "what" parameter of acc_add_changed_dom() an enum type, and assert() that it won't exceed the accounting array (Julien Grall) --- tools/xenstore/xenstored_domain.c | 19 +++++++++++-------- tools/xenstore/xenstored_domain.h | 10 ++++++++++ 2 files changed, 21 insertions(+), 8 deletions(-) diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_d= omain.c index dbbf97accc..609a9a13ab 100644 --- a/tools/xenstore/xenstored_domain.c +++ b/tools/xenstore/xenstored_domain.c @@ -99,8 +99,8 @@ struct changed_domain /* Identifier of the changed domain. */ unsigned int domid; =20 - /* Amount by which this domain's nbentry field has changed. */ - int nbentry; + /* Accounting data. */ + int acc[ACC_TR_N]; }; =20 static struct hashtable *domhash; @@ -550,7 +550,7 @@ int acc_fix_domains(struct list_head *head, bool chk_qu= ota, bool update) int cnt; =20 list_for_each_entry(cd, head, list) { - cnt =3D domain_nbentry_fix(cd->domid, cd->nbentry, update); + cnt =3D domain_nbentry_fix(cd->domid, cd->acc[ACC_NODES], update); if (!update) { if (chk_quota && cnt >=3D quota_nb_entry_per_domain) return ENOSPC; @@ -595,19 +595,21 @@ static struct changed_domain *acc_get_changed_domain(= const void *ctx, return cd; } =20 -static int acc_add_dom_nbentry(const void *ctx, struct list_head *head, in= t val, - unsigned int domid) +static int acc_add_changed_dom(const void *ctx, struct list_head *head, + enum accitem what, int val, unsigned int domid) { struct changed_domain *cd; =20 + assert(what < ARRAY_SIZE(cd->acc)); + cd =3D acc_get_changed_domain(ctx, head, domid); if (!cd) return 0; =20 errno =3D 0; - cd->nbentry +=3D val; + cd->acc[what] +=3D val; =20 - return cd->nbentry; + return cd->acc[what]; } =20 static void domain_conn_reset(struct domain *domain) @@ -1071,7 +1073,8 @@ static int domain_nbentry_add(struct connection *conn= , unsigned int domid, =20 if (conn && conn->transaction) { head =3D transaction_get_changed_domains(conn->transaction); - ret =3D acc_add_dom_nbentry(conn->transaction, head, add, domid); + ret =3D acc_add_changed_dom(conn->transaction, head, ACC_NODES, + add, domid); if (errno) { fail_transaction(conn->transaction); return -1; diff --git a/tools/xenstore/xenstored_domain.h b/tools/xenstore/xenstored_d= omain.h index 279cccb3ad..40803574f6 100644 --- a/tools/xenstore/xenstored_domain.h +++ b/tools/xenstore/xenstored_domain.h @@ -19,6 +19,16 @@ #ifndef _XENSTORED_DOMAIN_H #define _XENSTORED_DOMAIN_H =20 +/* + * All accounting data is stored in a per-domain array. + * Depending on the account item there might be other scopes as well, like= e.g. + * a per transaction array. + */ +enum accitem { + ACC_NODES, + ACC_TR_N, /* Number of elements per transaction. */ +}; + void handle_event(void); =20 void check_domains(void); --=20 2.35.3