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David Alan Gilbert" , Eric Blake , Markus Armbruster Cc: Zhang Chen Subject: [PATCH V2 3/4] qapi: Add attached flag for iothread Date: Wed, 21 Jan 2026 14:41:09 +0800 Message-ID: <20260121064110.28760-3-zhangckid@gmail.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20260121064110.28760-1-zhangckid@gmail.com> References: <20260121064110.28760-1-zhangckid@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::435; envelope-from=zhangckid@gmail.com; helo=mail-pf1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The attached flag depends on struct IOThreadInfo's 'attached': 'bool'. It can show whether the iothread is attached to an actual device. Show in the qmp/hmp CMD with "attached": true/false. Signed-off-by: Zhang Chen --- iothread.c | 1 + monitor/hmp-cmds.c | 2 ++ qapi/misc.json | 6 ++++++ 3 files changed, 9 insertions(+) diff --git a/iothread.c b/iothread.c index 38e38fb44d..fb4898e491 100644 --- a/iothread.c +++ b/iothread.c @@ -358,6 +358,7 @@ static int query_one_iothread(Object *object, void *opaque) info = g_new0(IOThreadInfo, 1); info->id = iothread_get_id(iothread); info->thread_id = iothread->thread_id; + info->attached = iothread->attached; info->poll_max_ns = iothread->poll_max_ns; info->poll_grow = iothread->poll_grow; info->poll_shrink = iothread->poll_shrink; diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 5a673cddb2..7463f34bf5 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -202,6 +202,8 @@ void hmp_info_iothreads(Monitor *mon, const QDict *qdict) value = info->value; monitor_printf(mon, "%s:\n", value->id); monitor_printf(mon, " thread_id=%" PRId64 "\n", value->thread_id); + monitor_printf(mon, " attached=%s" "\n", + value->attached ? "true" : "false"); monitor_printf(mon, " poll-max-ns=%" PRId64 "\n", value->poll_max_ns); monitor_printf(mon, " poll-grow=%" PRId64 "\n", value->poll_grow); monitor_printf(mon, " poll-shrink=%" PRId64 "\n", value->poll_shrink); diff --git a/qapi/misc.json b/qapi/misc.json index e87994c9d9..99ffd45ce5 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -76,6 +76,9 @@ # # @thread-id: ID of the underlying host thread # +# @attached: flag to show current iothread attach to device status +# (since 12.0) +# # @poll-max-ns: maximum polling time in ns, 0 means polling is # disabled (since 2.9) # @@ -93,6 +96,7 @@ { 'struct': 'IOThreadInfo', 'data': {'id': 'str', 'thread-id': 'int', + 'attached': 'bool', 'poll-max-ns': 'int', 'poll-grow': 'int', 'poll-shrink': 'int', @@ -118,6 +122,7 @@ # { # "id":"iothread0", # "thread-id":3134, +# "attached":false", # 'poll-max-ns':32768, # "poll-grow":0, # "poll-shrink":0, @@ -126,6 +131,7 @@ # { # "id":"iothread1", # "thread-id":3135, +# "attached":true", # 'poll-max-ns':32768, # "poll-grow":0, # "poll-shrink":0, -- 2.49.0