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X-Received-From: 2607:f8b0:4864:20::444 Subject: [Qemu-devel] [RFC PATCH v2 5/9] util/async: add aio interfaces for io_uring X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, saket.sinha89@gmail.com, Stefan Hajnoczi , Julia Suvorova , Aarushi Mehta Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Aarushi Mehta Reviewed-by: Stefan Hajnoczi --- util/async.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) -- 2.17.1 diff --git a/util/async.c b/util/async.c index c10642a385..2709f0edc3 100644 --- a/util/async.c +++ b/util/async.c @@ -277,6 +277,14 @@ aio_ctx_finalize(GSource *source) } #endif +#ifdef CONFIG_LINUX_IO_URING + if (ctx->linux_io_uring) { + luring_detach_aio_context(ctx->linux_io_uring, ctx); + luring_cleanup(ctx->linux_io_uring); + ctx->linux_io_uring = NULL; + } +#endif + assert(QSLIST_EMPTY(&ctx->scheduled_coroutines)); qemu_bh_delete(ctx->co_schedule_bh); @@ -341,6 +349,29 @@ LinuxAioState *aio_get_linux_aio(AioContext *ctx) } #endif +#ifdef CONFIG_LINUX_IO_URING +LuringState *aio_setup_linux_io_uring(AioContext *ctx, Error **errp) +{ + if (ctx->linux_io_uring) { + return ctx->linux_io_uring; + } + + ctx->linux_io_uring = luring_init(errp); + if (!ctx->linux_io_uring) { + return NULL; + } + + luring_attach_aio_context(ctx->linux_io_uring, ctx); + return ctx->linux_io_uring; +} + +LuringState *aio_get_linux_io_uring(AioContext *ctx) +{ + assert(ctx->linux_io_uring); + return ctx->linux_io_uring; +} +#endif + void aio_notify(AioContext *ctx) { /* Write e.g. bh->scheduled before reading ctx->notify_me. Pairs @@ -432,6 +463,11 @@ AioContext *aio_context_new(Error **errp) #ifdef CONFIG_LINUX_AIO ctx->linux_aio = NULL; #endif + +#ifdef CONFIG_LINUX_IO_URING + ctx->linux_io_uring = NULL; +#endif + ctx->thread_pool = NULL; qemu_rec_mutex_init(&ctx->lock); timerlistgroup_init(&ctx->tlg, aio_timerlist_notify, ctx);