From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9626EC05027 for ; Fri, 20 Jan 2023 12:29:23 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pIqUF-0003Dd-C8; Fri, 20 Jan 2023 07:27:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pIqUD-00033t-4J for qemu-devel@nongnu.org; Fri, 20 Jan 2023 07:27:13 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pIqUB-0000R9-4V for qemu-devel@nongnu.org; Fri, 20 Jan 2023 07:27:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674217630; h=from:from:reply-to:subject:subject: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=VIMwH/jjhZN97Glovb3MAWJgd5q4nETp31846wuEEXI=; b=i9KbvJPDS7NWS0eYaIL2ocYnXWJ+4ft7L609o5CSJM3n78ZMjb4xMzPsgOhqLTpCPY2IeA ANOkYP19Z0avhgLh/uB5qJcz7PZTMVFSr5gyQ9UcxwtDVulQgGVt347r+3Y4f1LVwRBRTO i1ERuCJOshebZslBAwGzXOVPfpUx68c= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-594-zJEhO2c1PEmKD9p6MXolgA-1; Fri, 20 Jan 2023 07:27:03 -0500 X-MC-Unique: zJEhO2c1PEmKD9p6MXolgA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 252B2857F82; Fri, 20 Jan 2023 12:27:03 +0000 (UTC) Received: from merkur.fritz.box (unknown [10.39.193.74]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5A94E40C6EC4; Fri, 20 Jan 2023 12:27:02 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Subject: [PULL 24/38] block: Convert bdrv_debug_event() to co_wrapper_mixed Date: Fri, 20 Jan 2023 13:26:19 +0100 Message-Id: <20230120122633.84983-25-kwolf@redhat.com> In-Reply-To: <20230120122633.84983-1-kwolf@redhat.com> References: <20230120122633.84983-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, 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: 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 From: Emanuele Giuseppe Esposito bdrv_debug_event() is categorized as an I/O function, and it currently doesn't run in a coroutine. We should let it take a graph rdlock since it traverses the block nodes graph, which however is only possible in a coroutine. Therefore turn it into a co_wrapper_mixed to move the actual function into a coroutine where the lock can be taken. Signed-off-by: Emanuele Giuseppe Esposito Signed-off-by: Kevin Wolf Message-Id: <20230113204212.359076-14-kwolf@redhat.com> Reviewed-by: Emanuele Giuseppe Esposito Signed-off-by: Kevin Wolf --- include/block/block-io.h | 5 ++++- include/block/block_int-common.h | 3 ++- block.c | 6 +++--- block/blkdebug.c | 5 +++-- block/io.c | 22 +++++++++++----------- 5 files changed, 23 insertions(+), 18 deletions(-) diff --git a/include/block/block-io.h b/include/block/block-io.h index 33e0cc2068..6ec2309143 100644 --- a/include/block/block-io.h +++ b/include/block/block-io.h @@ -188,7 +188,10 @@ void *qemu_try_blockalign0(BlockDriverState *bs, size_t size); void bdrv_enable_copy_on_read(BlockDriverState *bs); void bdrv_disable_copy_on_read(BlockDriverState *bs); -void bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event); +void coroutine_fn bdrv_co_debug_event(BlockDriverState *bs, + BlkdebugEvent event); +void co_wrapper_mixed bdrv_debug_event(BlockDriverState *bs, + BlkdebugEvent event); #define BLKDBG_EVENT(child, evt) \ do { \ diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index 1174f13a2f..93d4350f24 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -729,7 +729,8 @@ struct BlockDriver { int coroutine_fn GRAPH_RDLOCK_PTR (*bdrv_co_check)( BlockDriverState *bs, BdrvCheckResult *result, BdrvCheckMode fix); - void (*bdrv_debug_event)(BlockDriverState *bs, BlkdebugEvent event); + void coroutine_fn (*bdrv_co_debug_event)(BlockDriverState *bs, + BlkdebugEvent event); /* io queue for linux-aio */ void coroutine_fn (*bdrv_co_io_plug)(BlockDriverState *bs); diff --git a/block.c b/block.c index cf3582f9c9..f9dbe11aa5 100644 --- a/block.c +++ b/block.c @@ -6350,14 +6350,14 @@ BlockStatsSpecific *bdrv_get_specific_stats(BlockDriverState *bs) return drv->bdrv_get_specific_stats(bs); } -void bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event) +void coroutine_fn bdrv_co_debug_event(BlockDriverState *bs, BlkdebugEvent event) { IO_CODE(); - if (!bs || !bs->drv || !bs->drv->bdrv_debug_event) { + if (!bs || !bs->drv || !bs->drv->bdrv_co_debug_event) { return; } - bs->drv->bdrv_debug_event(bs, event); + bs->drv->bdrv_co_debug_event(bs, event); } static BlockDriverState *bdrv_find_debug_node(BlockDriverState *bs) diff --git a/block/blkdebug.c b/block/blkdebug.c index 2294b0227b..69aa7aa43d 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -835,7 +835,8 @@ static void process_rule(BlockDriverState *bs, struct BlkdebugRule *rule, } } -static void blkdebug_debug_event(BlockDriverState *bs, BlkdebugEvent event) +static void coroutine_fn +blkdebug_co_debug_event(BlockDriverState *bs, BlkdebugEvent event) { BDRVBlkdebugState *s = bs->opaque; struct BlkdebugRule *rule, *next; @@ -1085,7 +1086,7 @@ static BlockDriver bdrv_blkdebug = { .bdrv_co_pdiscard = blkdebug_co_pdiscard, .bdrv_co_block_status = blkdebug_co_block_status, - .bdrv_debug_event = blkdebug_debug_event, + .bdrv_co_debug_event = blkdebug_co_debug_event, .bdrv_debug_breakpoint = blkdebug_debug_breakpoint, .bdrv_debug_remove_breakpoint = blkdebug_debug_remove_breakpoint, diff --git a/block/io.c b/block/io.c index c43637f5c1..cd1cea2515 100644 --- a/block/io.c +++ b/block/io.c @@ -1250,7 +1250,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child, goto err; } - bdrv_debug_event(bs, BLKDBG_COR_WRITE); + bdrv_co_debug_event(bs, BLKDBG_COR_WRITE); if (drv->bdrv_co_pwrite_zeroes && buffer_is_zero(bounce_buffer, pnum)) { /* FIXME: Should we (perhaps conditionally) be setting @@ -1495,10 +1495,10 @@ static coroutine_fn int bdrv_padding_rmw_read(BdrvChild *child, qemu_iovec_init_buf(&local_qiov, pad->buf, bytes); if (pad->head) { - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_HEAD); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_HEAD); } if (pad->merge_reads && pad->tail) { - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_TAIL); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_TAIL); } ret = bdrv_aligned_preadv(child, req, req->overlap_offset, bytes, align, &local_qiov, 0, 0); @@ -1506,10 +1506,10 @@ static coroutine_fn int bdrv_padding_rmw_read(BdrvChild *child, return ret; } if (pad->head) { - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_HEAD); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_HEAD); } if (pad->merge_reads && pad->tail) { - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_TAIL); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_TAIL); } if (pad->merge_reads) { @@ -1520,7 +1520,7 @@ static coroutine_fn int bdrv_padding_rmw_read(BdrvChild *child, if (pad->tail) { qemu_iovec_init_buf(&local_qiov, pad->tail_buf, align); - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_TAIL); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_TAIL); ret = bdrv_aligned_preadv( child, req, req->overlap_offset + req->overlap_bytes - align, @@ -1528,7 +1528,7 @@ static coroutine_fn int bdrv_padding_rmw_read(BdrvChild *child, if (ret < 0) { return ret; } - bdrv_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_TAIL); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_RMW_AFTER_TAIL); } zero_mem: @@ -1930,16 +1930,16 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child, if (ret < 0) { /* Do nothing, write notifier decided to fail this request */ } else if (flags & BDRV_REQ_ZERO_WRITE) { - bdrv_debug_event(bs, BLKDBG_PWRITEV_ZERO); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_ZERO); ret = bdrv_co_do_pwrite_zeroes(bs, offset, bytes, flags); } else if (flags & BDRV_REQ_WRITE_COMPRESSED) { ret = bdrv_driver_pwritev_compressed(bs, offset, bytes, qiov, qiov_offset); } else if (bytes <= max_transfer) { - bdrv_debug_event(bs, BLKDBG_PWRITEV); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV); ret = bdrv_driver_pwritev(bs, offset, bytes, qiov, qiov_offset, flags); } else { - bdrv_debug_event(bs, BLKDBG_PWRITEV); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV); while (bytes_remaining) { int num = MIN(bytes_remaining, max_transfer); int local_flags = flags; @@ -1962,7 +1962,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child, bytes_remaining -= num; } } - bdrv_debug_event(bs, BLKDBG_PWRITEV_DONE); + bdrv_co_debug_event(bs, BLKDBG_PWRITEV_DONE); if (ret >= 0) { ret = 0; -- 2.38.1