From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33407) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gW4uF-0001SS-9A for qemu-devel@nongnu.org; Sun, 09 Dec 2018 14:38:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gW4uD-0005t5-BC for qemu-devel@nongnu.org; Sun, 09 Dec 2018 14:38:23 -0500 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]:33515) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gW4uC-0004zU-TZ for qemu-devel@nongnu.org; Sun, 09 Dec 2018 14:38:21 -0500 From: "Emilio G. Cota" Date: Sun, 9 Dec 2018 14:37:27 -0500 Message-Id: <20181209193749.12277-17-cota@braap.org> In-Reply-To: <20181209193749.12277-1-cota@braap.org> References: <20181209193749.12277-1-cota@braap.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [RFC v2 16/38] translate-all: notify plugin code of tb_flush List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson , Pavel Dovgalyuk Plugins might allocate per-TB data that then they get passed each time a TB is executed (via the *userdata pointer). Notify plugin code every time a code cache flush occurs, so that plugins can then reclaim the memory of the per-TB data. Reviewed-by: Alex Bennée Signed-off-by: Emilio G. Cota --- accel/tcg/translate-all.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 62d5e13185..aaa8193ceb 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1232,6 +1232,8 @@ static gboolean tb_host_size_iter(gpointer key, gpointer value, gpointer data) /* flush all the translation blocks */ static void do_tb_flush(CPUState *cpu, run_on_cpu_data tb_flush_count) { + bool did_flush = false; + mmap_lock(); /* If it is already been done on request of another CPU, * just retry. @@ -1239,6 +1241,7 @@ static void do_tb_flush(CPUState *cpu, run_on_cpu_data tb_flush_count) if (tb_ctx.tb_flush_count != tb_flush_count.host_int) { goto done; } + did_flush = true; if (DEBUG_TB_FLUSH_GATE) { size_t nb_tbs = tcg_nb_tbs(); @@ -1263,6 +1266,9 @@ static void do_tb_flush(CPUState *cpu, run_on_cpu_data tb_flush_count) done: mmap_unlock(); + if (did_flush) { + qemu_plugin_flush_cb(); + } } void tb_flush(CPUState *cpu) -- 2.17.1