[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] tools/xenstore: switch transaction accounting to generic accounting
commit 304ed13b9aa992333db25e5a2ffa43d072c5fbdd Author: Juergen Gross <jgross@xxxxxxxx> AuthorDate: Tue May 30 10:24:20 2023 +0200 Commit: Julien Grall <jgrall@xxxxxxxxxx> CommitDate: Wed Jun 7 12:10:31 2023 +0100 tools/xenstore: switch transaction accounting to generic accounting As transaction accounting is active for unprivileged domains only, it can easily be added to the generic per-domain accounting. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Acked-by: Julien Grall <jgrall@xxxxxxxxxx> --- tools/xenstore/xenstored_core.c | 3 +-- tools/xenstore/xenstored_core.h | 1 - tools/xenstore/xenstored_domain.c | 21 ++++++++++++++++++--- tools/xenstore/xenstored_domain.h | 4 ++++ tools/xenstore/xenstored_transaction.c | 15 +++++++-------- 5 files changed, 30 insertions(+), 14 deletions(-) diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c index 069c03d4b0..3343f939b4 100644 --- a/tools/xenstore/xenstored_core.c +++ b/tools/xenstore/xenstored_core.c @@ -2093,7 +2093,7 @@ static void consider_message(struct connection *conn) * stalled. This will ignore new requests until Live-Update happened * or it was aborted. */ - if (lu_is_pending() && conn->transaction_started == 0 && + if (lu_is_pending() && list_empty(&conn->transaction_list) && conn->in->hdr.msg.type == XS_TRANSACTION_START) { trace("Delaying transaction start for connection %p req_id %u\n", conn, conn->in->hdr.msg.req_id); @@ -2200,7 +2200,6 @@ struct connection *new_connection(const struct interface_funcs *funcs) new->funcs = funcs; new->is_ignored = false; new->is_stalled = false; - new->transaction_started = 0; INIT_LIST_HEAD(&new->out_list); INIT_LIST_HEAD(&new->acc_list); INIT_LIST_HEAD(&new->ref_list); diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_core.h index 5a11dc1231..3564d85d7d 100644 --- a/tools/xenstore/xenstored_core.h +++ b/tools/xenstore/xenstored_core.h @@ -151,7 +151,6 @@ struct connection /* List of in-progress transactions. */ struct list_head transaction_list; uint32_t next_transaction_id; - unsigned int transaction_started; time_t ta_start_time; /* List of delayed requests. */ diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_domain.c index 6523c3a830..05747944e5 100644 --- a/tools/xenstore/xenstored_domain.c +++ b/tools/xenstore/xenstored_domain.c @@ -416,12 +416,10 @@ int domain_get_quota(const void *ctx, struct connection *conn, { struct domain *d = find_domain_struct(domid); char *resp; - int ta; if (!d) return ENOENT; - ta = d->conn ? d->conn->transaction_started : 0; resp = talloc_asprintf(ctx, "Domain %u:\n", domid); if (!resp) return ENOMEM; @@ -432,7 +430,7 @@ int domain_get_quota(const void *ctx, struct connection *conn, ent(nodes, d->acc[ACC_NODES]); ent(watches, d->acc[ACC_WATCH]); - ent(transactions, ta); + ent(transactions, d->acc[ACC_TRANS]); ent(outstanding, d->acc[ACC_OUTST]); ent(memory, d->acc[ACC_MEM]); @@ -1297,6 +1295,23 @@ void domain_outstanding_dec(struct connection *conn, unsigned int domid) domain_acc_add(conn, domid, ACC_OUTST, -1, true); } +void domain_transaction_inc(struct connection *conn) +{ + domain_acc_add(conn, conn->id, ACC_TRANS, 1, true); +} + +void domain_transaction_dec(struct connection *conn) +{ + domain_acc_add(conn, conn->id, ACC_TRANS, -1, true); +} + +unsigned int domain_transaction_get(struct connection *conn) +{ + return (domain_is_unprivileged(conn)) + ? domain_acc_add(conn, conn->id, ACC_TRANS, 0, true) + : 0; +} + static wrl_creditt wrl_config_writecost = WRL_FACTOR; static wrl_creditt wrl_config_rate = WRL_RATE * WRL_FACTOR; static wrl_creditt wrl_config_dburst = WRL_DBURST * WRL_FACTOR; diff --git a/tools/xenstore/xenstored_domain.h b/tools/xenstore/xenstored_domain.h index 086133407b..01b6f1861b 100644 --- a/tools/xenstore/xenstored_domain.h +++ b/tools/xenstore/xenstored_domain.h @@ -32,6 +32,7 @@ enum accitem { ACC_WATCH = ACC_TR_N, ACC_OUTST, ACC_MEM, + ACC_TRANS, ACC_N, /* Number of elements per domain. */ }; @@ -113,6 +114,9 @@ void domain_watch_dec(struct connection *conn); int domain_watch(struct connection *conn); void domain_outstanding_inc(struct connection *conn); void domain_outstanding_dec(struct connection *conn, unsigned int domid); +void domain_transaction_inc(struct connection *conn); +void domain_transaction_dec(struct connection *conn); +unsigned int domain_transaction_get(struct connection *conn); int domain_get_quota(const void *ctx, struct connection *conn, unsigned int domid); diff --git a/tools/xenstore/xenstored_transaction.c b/tools/xenstore/xenstored_transaction.c index 11c8bcec84..9cfb0017c8 100644 --- a/tools/xenstore/xenstored_transaction.c +++ b/tools/xenstore/xenstored_transaction.c @@ -479,8 +479,7 @@ int do_transaction_start(const void *ctx, struct connection *conn, if (conn->transaction) return EBUSY; - if (domain_is_unprivileged(conn) && - conn->transaction_started > quota_max_transaction) + if (domain_transaction_get(conn) > quota_max_transaction) return ENOSPC; /* Attach transaction to ctx for autofree until it's complete */ @@ -501,13 +500,14 @@ int do_transaction_start(const void *ctx, struct connection *conn, exists = transaction_lookup(conn, conn->next_transaction_id++); } while (!IS_ERR(exists)); + if (list_empty(&conn->transaction_list)) + conn->ta_start_time = time(NULL); + /* Now we own it. */ list_add_tail(&trans->list, &conn->transaction_list); talloc_steal(conn, trans); talloc_set_destructor(trans, destroy_transaction); - if (!conn->transaction_started) - conn->ta_start_time = time(NULL); - conn->transaction_started++; + domain_transaction_inc(conn); wrl_ntransactions++; snprintf(id_str, sizeof(id_str), "%u", trans->id); @@ -533,8 +533,8 @@ int do_transaction_end(const void *ctx, struct connection *conn, conn->transaction = NULL; list_del(&trans->list); - conn->transaction_started--; - if (!conn->transaction_started) + domain_transaction_dec(conn); + if (list_empty(&conn->transaction_list)) conn->ta_start_time = 0; chk_quota = trans->node_created && domain_is_unprivileged(conn); @@ -588,7 +588,6 @@ void conn_delete_all_transactions(struct connection *conn) assert(conn->transaction == NULL); - conn->transaction_started = 0; conn->ta_start_time = 0; } -- generated by git-patchbot for /home/xen/git/xen.git#master
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