From patchwork Tue Apr 26 10:12:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitesh Shetty X-Patchwork-Id: 12826983 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94677C433EF for ; Tue, 26 Apr 2022 12:15:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349830AbiDZMSM (ORCPT ); Tue, 26 Apr 2022 08:18:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349844AbiDZMSI (ORCPT ); Tue, 26 Apr 2022 08:18:08 -0400 Received: from mailout3.samsung.com (mailout3.samsung.com [203.254.224.33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B09A81BA; Tue, 26 Apr 2022 05:14:59 -0700 (PDT) Received: from epcas5p3.samsung.com (unknown [182.195.41.41]) by mailout3.samsung.com (KnoxPortal) with ESMTP id 20220426121454epoutp03822085a2a850d758d8c4358a8dba87fc~pcUhynVE31888718887epoutp035; Tue, 26 Apr 2022 12:14:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout3.samsung.com 20220426121454epoutp03822085a2a850d758d8c4358a8dba87fc~pcUhynVE31888718887epoutp035 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1650975294; bh=Y6nLu4EUmmRo801BjsJamjU9FacPnHUT/9x7GE7rhSo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sxNKoZt6j7K21LZeNMNcpANzs1jp5OtTBhVSdOBoEGBqnkvX4U9rCLOLba97EmGcs r/97HLy3ZmRSJu0XfofwJbFWLyPeGIFtW0EqabfkB9LwThRmQcYQKtIHGX+pU0V+wd JBMTHKlyhHm4fQZu3rcWM2UK+DB7jWgsz/5LG9PA= Received: from epsnrtp4.localdomain (unknown [182.195.42.165]) by epcas5p2.samsung.com (KnoxPortal) with ESMTP id 20220426121453epcas5p2d52c6695014c9969d7b79bfaab7aef46~pcUhW689V3067830678epcas5p20; Tue, 26 Apr 2022 12:14:53 +0000 (GMT) Received: from epsmges5p2new.samsung.com (unknown [182.195.38.178]) by epsnrtp4.localdomain (Postfix) with ESMTP id 4Kngmp1FwZz4x9Pw; Tue, 26 Apr 2022 12:14:50 +0000 (GMT) Received: from epcas5p2.samsung.com ( [182.195.41.40]) by epsmges5p2new.samsung.com (Symantec Messaging Gateway) with SMTP id 56.3F.09827.A32E7626; Tue, 26 Apr 2022 21:14:50 +0900 (KST) Received: from epsmtrp1.samsung.com (unknown [182.195.40.13]) by epcas5p4.samsung.com (KnoxPortal) with ESMTPA id 20220426101910epcas5p4fd64f83c6da9bbd891107d158a2743b5~pave0_0R70865008650epcas5p4F; Tue, 26 Apr 2022 10:19:10 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20220426101910epsmtrp148b5805b8c074921e462188833d374ad~paveyax752263822638epsmtrp1R; Tue, 26 Apr 2022 10:19:10 +0000 (GMT) X-AuditID: b6c32a4a-b51ff70000002663-ec-6267e23a98e5 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 22.49.08853.E17C7626; Tue, 26 Apr 2022 19:19:10 +0900 (KST) Received: from test-zns.sa.corp.samsungelectronics.net (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220426101903epsmtip1ddd1407d9c85bbbf445ca97418c7cbaf~pavYpuX6P0426404264epsmtip1k; Tue, 26 Apr 2022 10:19:03 +0000 (GMT) From: Nitesh Shetty Cc: chaitanyak@nvidia.com, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, dm-devel@redhat.com, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, axboe@kernel.dk, msnitzer@redhat.com, bvanassche@acm.org, martin.petersen@oracle.com, hare@suse.de, kbusch@kernel.org, hch@lst.de, Frederick.Knight@netapp.com, osandov@fb.com, lsf-pc@lists.linux-foundation.org, djwong@kernel.org, josef@toxicpanda.com, clm@fb.com, dsterba@suse.com, tytso@mit.edu, jack@suse.com, nitheshshetty@gmail.com, gost.dev@samsung.com, Nitesh Shetty , Kanchan Joshi , Arnav Dawn , Alasdair Kergon , Mike Snitzer , Sagi Grimberg , James Smart , Chaitanya Kulkarni , Damien Le Moal , Naohiro Aota , Johannes Thumshirn , Alexander Viro , linux-kernel@vger.kernel.org Subject: [PATCH v4 01/10] block: Introduce queue limits for copy-offload support Date: Tue, 26 Apr 2022 15:42:29 +0530 Message-Id: <20220426101241.30100-2-nj.shetty@samsung.com> X-Mailer: git-send-email 2.35.1.500.gb896f729e2 In-Reply-To: <20220426101241.30100-1-nj.shetty@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA01Te1BUZRTvu/fu3YUJu4CMn5TDusUMSjyWFvxAsAapbkHF4Awmg8ICt8UB dtd9RGIjIODwkHcwuigvTRQYQAwFYakgIhYJneUhGCCCOcC4qKhovGK5UP73O79zfr/znfPN 4eEWg1xr3mGpilFIxdEC0pS41r7DzsHjviTMea6PQLW633HUMjTHQVUj2SQqfPwKR7O/TnBQ XvZpLlro6cWRfnIT0hqKOOjWy0QMTdSvYGjolyYMtZTnYehyVQeGHlacB6i57AmGFseFqGPl EYnGnw0TKK9tAKAH/RoMaYftUYu2i0D6G2dJVHLxARdlDDaSqHVGi6OKzmUM/alZJFFu51UO apxMBOjaQgmO2kf7CVQzM0ugP4bfRimnXnFR71In5yNbWt/nS2vGekg6N8nApZs0I1y6d/QK Qet71HR9ZRpJX70QT+ffqQB081ACSZ+42YHTp58+I+nMJANJN6WMcegnD4YJera1n/TfEhTl GcmIIxgFn5GGyyIOSyVeAt99IXtDXN2chQ5Cd7RLwJeKYxgvgY+fv8Mnh6NXtyngfyuOVq9S /mKlUuC0x1MhU6sYfqRMqfISMPKIaLlI7qgUxyjVUomjlFF5CJ2dXVxXC0OjIjtby0n5SNx3 Kb9lkAmgTpIOTHiQEsHZhy/JdGDKs6CaAVzUFRJs8BTAEn0yxgYvALz48xi+IfnL0LAu0QKY ZDi3HqRgcDD7n1U9j0dS9rB7hWcUbKYIeHl+fs0Wpwp4cCCtGBgTllQA7J+5u+ZKULawt6GF Y8RmlAfMm76JG30g5QSzx8yNtAm1G/7YYcDYEnPYdWaSMGKcsoFJDUW40R9SWaaw+1I+wWp9 YFlVMPtoSzjd+ROXxdZwKvvkOo6F10+WYqw2GcB0nY5gEx/C2y1LmNEHp3bA2htOLL0NFuhq MLbvJpi5MImxvBlsLN7A78Lq2lKSxVvhwHziOqZhadk5nN1VFoD3FmtADuBrXptH89o8mv9b lwK8Emxl5MoYCaN0lbtImdj/fjlcFlMP1i5s5+eNYPzeY8c2gPFAG4A8XLDZrMD2mzALswjx 0ThGIQtRqKMZZRtwXd13Lm5tFS5bPVGpKkQocncWubm5idw/cBMKtph1S+rEFpRErGKiGEbO KDZ0GM/EOgE7VvEso330voAKH7j0XK1f+jvZvDhVeCTzetGTo/EZrtMg9fwBxXCvMHdqe+BK mtZdLbqwu/h43Z5QYJsT7Hhon5053r5/P8+9p7Gfk9BgG6B/Y7kyvKn69sSoffDUmdlytW3s 1+8ULu77OM2XX3G39axvofAL4Vsq+s6IU9vTfFPvXYKAgYISG9AVqHKXXjF86Rmk0/RderNQ 5LX3mJ/8VnrkEW5dXU1cYHV8NXoY4OLTf9/GzzI15VZoysH3CXPmUV5mUMV7STNWTVrZZ4Mn ppa+fz6+fHCXN7/mxYHCOf/S7TnlLf6fhtllxfrQkuNAl1QT0Nw08VUl91DoNqvOH/q8BYQy UizciSuU4n8B5/fKD+oEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA02Sf1CTdQDG7/313cvuZi8T5Qt0FLujBM/BOv74Bh1h59Xb1ZK78Ai70qEv w5ON3cYAxQglrkJqMU+loTd1CA0sZYhtjC1F5kT55c0ZYEDIODFoCGpAA6lJ3fnfc8/nc89f D00Iq6hIeo+ygFMrZXkiwCcvXRVFb4p2y7MTfUeE6PyNawRqH3xEoaZhHUDHHi4SaObKOIX0 uhoeCvT0EcjjW4Mc/loK9S8cxNG4ZQVHg5dtOGo/o8eRucmFo/sNJgzZT8/iaGlMglwrfwI0 9niIRPqOOxia8Bpw5BjaiNodXSTytJ0AyFg/wUOHf7UC5JxyEKjB/RRHvYYlgKrdLRSy+g5i 6FLASKCrI14S/TQ1Q6LrQ1GoomqRh/qW3VRaLOu5/R5rGO0BbHW5n8faDMM8tm+kmWQ9PVrW 0vg1YFvqPmePDDRgrH2wDLCHul0EWzP3GLDflPsBa6sYpdjZiSGSnXF6QXr4dv4bu7m8PYWc OiF1Jz/X7TwDVMP7iys6D4My7IK8EguhIZMEf/O3gkqMTwsZOwb1FhuxCiJg/XLnf3ktND+9 z1uVynG4MG+gKjGaBsxGeHOFDjphDAnN8/Nk0CGYX2jomg6AIFjLpMN6Vx0ZzCQTC/ta26lg FjDJUP9HNxHcgUwC1I2GBusQJgWedfnxYC38VxkIFK/aobDre9+zFYJ5CZa31hLfYYzhOWR4 Dp3C8EYsglNpFHKFRqKSKLkisUam0GiVcvGufIUFe3aY+Dgr9nPjQ3EHhtNYBwZpQhQmOBqb ky0U7Jbt28+p83eotXmcpgOLoklRuKC/smuHkJHLCri9HKfi1P9TnA6JLMOTpNkuvNC+7tab L1h2TeZoYs52WQXJueu1VmlKhqnhqM60rzfhQNXs3bsxJYmvK0ubX+2PKKoq5SflSzPFF+3c ayDnxLQ7RbE5NOneUrRI9cHxzC/XFM05H105NHlq+q0X3w83jWyovbc3LP5yjdS0pS3qVmaW mXfj062f2Z2+tMQn3t7bWWHn5qjxDZ+sz9Bayj78qyX1wEAy/47xQTH4uyRz5cL1Be27FdcG lkt422zd0q9eNoOsZn1c5+astBF9ncP7dqrxHW/n77rQ7TGL5xq1Tcb6L+gMCRZXqKw+eX7L pGP84kdtYvhDYN23x6bGnsyXaiP9nn7oeVDwY/orypsfi0hNrkwST6g1sn8AmlHhSZ8DAAA= X-CMS-MailID: 20220426101910epcas5p4fd64f83c6da9bbd891107d158a2743b5 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220426101910epcas5p4fd64f83c6da9bbd891107d158a2743b5 References: <20220426101241.30100-1-nj.shetty@samsung.com> To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add device limits as sysfs entries, - copy_offload (RW) - copy_max_bytes (RW) - copy_max_hw_bytes (RO) - copy_max_range_bytes (RW) - copy_max_range_hw_bytes (RO) - copy_max_nr_ranges (RW) - copy_max_nr_ranges_hw (RO) Above limits help to split the copy payload in block layer. copy_offload, used for setting copy offload(1) or emulation(0). copy_max_bytes: maximum total length of copy in single payload. copy_max_range_bytes: maximum length in a single entry. copy_max_nr_ranges: maximum number of entries in a payload. copy_max_*_hw_*: Reflects the device supported maximum limits. Signed-off-by: Nitesh Shetty Signed-off-by: Kanchan Joshi Signed-off-by: Arnav Dawn Reviewed-by: Hannes Reinecke --- Documentation/ABI/stable/sysfs-block | 83 ++++++++++++++++ block/blk-settings.c | 59 ++++++++++++ block/blk-sysfs.c | 138 +++++++++++++++++++++++++++ include/linux/blkdev.h | 13 +++ 4 files changed, 293 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index e8797cd09aff..65e64b5a0105 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -155,6 +155,89 @@ Description: last zone of the device which may be smaller. +What: /sys/block//queue/copy_offload +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RW] When read, this file shows whether offloading copy to + device is enabled (1) or disabled (0). Writing '0' to this + file will disable offloading copies for this device. + Writing any '1' value will enable this feature. + + +What: /sys/block//queue/copy_max_bytes +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RW] While 'copy_max_hw_bytes' is the hardware limit for the + device, 'copy_max_bytes' setting is the software limit. + Setting this value lower will make Linux issue smaller size + copies. + + +What: /sys/block//queue/copy_max_hw_bytes +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] Devices that support offloading copy functionality may have + internal limits on the number of bytes that can be offloaded + in a single operation. The `copy_max_hw_bytes` + parameter is set by the device driver to the maximum number of + bytes that can be copied in a single operation. Copy + requests issued to the device must not exceed this limit. + A value of 0 means that the device does not + support copy offload. + + +What: /sys/block//queue/copy_max_nr_ranges +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RW] While 'copy_max_nr_ranges_hw' is the hardware limit for the + device, 'copy_max_nr_ranges' setting is the software limit. + + +What: /sys/block//queue/copy_max_nr_ranges_hw +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] Devices that support offloading copy functionality may have + internal limits on the number of ranges in single copy operation + that can be offloaded in a single operation. + A range is tuple of source, destination and length of data + to be copied. The `copy_max_nr_ranges_hw` parameter is set by + the device driver to the maximum number of ranges that can be + copied in a single operation. Copy requests issued to the device + must not exceed this limit. A value of 0 means that the device + does not support copy offload. + + +What: /sys/block//queue/copy_max_range_bytes +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RW] While 'copy_max_range_hw_bytes' is the hardware limit for + the device, 'copy_max_range_bytes' setting is the software + limit. + + +What: /sys/block//queue/copy_max_range_hw_bytes +Date: April 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] Devices that support offloading copy functionality may have + internal limits on the size of data, that can be copied in a + single range within a single copy operation. + A range is tuple of source, destination and length of data to be + copied. The `copy_max_range_hw_bytes` parameter is set by the + device driver to set the maximum length in bytes of a range + that can be copied in an operation. + Copy requests issued to the device must not exceed this limit. + Sum of sizes of all ranges in a single opeartion should not + exceed 'copy_max_hw_bytes'. A value of 0 means that the device + does not support copy offload. + + What: /sys/block//queue/crypto/ Date: February 2022 Contact: linux-block@vger.kernel.org diff --git a/block/blk-settings.c b/block/blk-settings.c index 6ccceb421ed2..70167aee3bf7 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -57,6 +57,12 @@ void blk_set_default_limits(struct queue_limits *lim) lim->misaligned = 0; lim->zoned = BLK_ZONED_NONE; lim->zone_write_granularity = 0; + lim->max_hw_copy_sectors = 0; + lim->max_copy_sectors = 0; + lim->max_hw_copy_nr_ranges = 0; + lim->max_copy_nr_ranges = 0; + lim->max_hw_copy_range_sectors = 0; + lim->max_copy_range_sectors = 0; } EXPORT_SYMBOL(blk_set_default_limits); @@ -81,6 +87,12 @@ void blk_set_stacking_limits(struct queue_limits *lim) lim->max_dev_sectors = UINT_MAX; lim->max_write_zeroes_sectors = UINT_MAX; lim->max_zone_append_sectors = UINT_MAX; + lim->max_hw_copy_sectors = ULONG_MAX; + lim->max_copy_sectors = ULONG_MAX; + lim->max_hw_copy_range_sectors = UINT_MAX; + lim->max_copy_range_sectors = UINT_MAX; + lim->max_hw_copy_nr_ranges = USHRT_MAX; + lim->max_copy_nr_ranges = USHRT_MAX; } EXPORT_SYMBOL(blk_set_stacking_limits); @@ -177,6 +189,45 @@ void blk_queue_max_discard_sectors(struct request_queue *q, } EXPORT_SYMBOL(blk_queue_max_discard_sectors); +/** + * blk_queue_max_copy_sectors - set max sectors for a single copy payload + * @q: the request queue for the device + * @max_copy_sectors: maximum number of sectors to copy + **/ +void blk_queue_max_copy_sectors(struct request_queue *q, + unsigned int max_copy_sectors) +{ + q->limits.max_hw_copy_sectors = max_copy_sectors; + q->limits.max_copy_sectors = max_copy_sectors; +} +EXPORT_SYMBOL_GPL(blk_queue_max_copy_sectors); + +/** + * blk_queue_max_copy_range_sectors - set max sectors for a single range, in a copy payload + * @q: the request queue for the device + * @max_copy_range_sectors: maximum number of sectors to copy in a single range + **/ +void blk_queue_max_copy_range_sectors(struct request_queue *q, + unsigned int max_copy_range_sectors) +{ + q->limits.max_hw_copy_range_sectors = max_copy_range_sectors; + q->limits.max_copy_range_sectors = max_copy_range_sectors; +} +EXPORT_SYMBOL_GPL(blk_queue_max_copy_range_sectors); + +/** + * blk_queue_max_copy_nr_ranges - set max number of ranges, in a copy payload + * @q: the request queue for the device + * @max_copy_nr_ranges: maximum number of ranges + **/ +void blk_queue_max_copy_nr_ranges(struct request_queue *q, + unsigned int max_copy_nr_ranges) +{ + q->limits.max_hw_copy_nr_ranges = max_copy_nr_ranges; + q->limits.max_copy_nr_ranges = max_copy_nr_ranges; +} +EXPORT_SYMBOL_GPL(blk_queue_max_copy_nr_ranges); + /** * blk_queue_max_secure_erase_sectors - set max sectors for a secure erase * @q: the request queue for the device @@ -572,6 +623,14 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->max_segment_size = min_not_zero(t->max_segment_size, b->max_segment_size); + t->max_copy_sectors = min(t->max_copy_sectors, b->max_copy_sectors); + t->max_hw_copy_sectors = min(t->max_hw_copy_sectors, b->max_hw_copy_sectors); + t->max_copy_range_sectors = min(t->max_copy_range_sectors, b->max_copy_range_sectors); + t->max_hw_copy_range_sectors = min(t->max_hw_copy_range_sectors, + b->max_hw_copy_range_sectors); + t->max_copy_nr_ranges = min(t->max_copy_nr_ranges, b->max_copy_nr_ranges); + t->max_hw_copy_nr_ranges = min(t->max_hw_copy_nr_ranges, b->max_hw_copy_nr_ranges); + t->misaligned |= b->misaligned; alignment = queue_limit_alignment_offset(b, start); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 88bd41d4cb59..bae987c10f7f 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -212,6 +212,129 @@ static ssize_t queue_discard_zeroes_data_show(struct request_queue *q, char *pag return queue_var_show(0, page); } +static ssize_t queue_copy_offload_show(struct request_queue *q, char *page) +{ + return queue_var_show(blk_queue_copy(q), page); +} + +static ssize_t queue_copy_offload_store(struct request_queue *q, + const char *page, size_t count) +{ + unsigned long copy_offload; + ssize_t ret = queue_var_store(©_offload, page, count); + + if (ret < 0) + return ret; + + if (copy_offload && !q->limits.max_hw_copy_sectors) + return -EINVAL; + + if (copy_offload) + blk_queue_flag_set(QUEUE_FLAG_COPY, q); + else + blk_queue_flag_clear(QUEUE_FLAG_COPY, q); + + return ret; +} + +static ssize_t queue_copy_max_hw_show(struct request_queue *q, char *page) +{ + return sprintf(page, "%llu\n", + (unsigned long long)q->limits.max_hw_copy_sectors << 9); +} + +static ssize_t queue_copy_max_show(struct request_queue *q, char *page) +{ + return sprintf(page, "%llu\n", + (unsigned long long)q->limits.max_copy_sectors << 9); +} + +static ssize_t queue_copy_max_store(struct request_queue *q, + const char *page, size_t count) +{ + unsigned long max_copy; + ssize_t ret = queue_var_store(&max_copy, page, count); + + if (ret < 0) + return ret; + + if (max_copy & (queue_logical_block_size(q) - 1)) + return -EINVAL; + + max_copy >>= 9; + if (max_copy > q->limits.max_hw_copy_sectors) + max_copy = q->limits.max_hw_copy_sectors; + + q->limits.max_copy_sectors = max_copy; + return ret; +} + +static ssize_t queue_copy_range_max_hw_show(struct request_queue *q, char *page) +{ + return sprintf(page, "%llu\n", + (unsigned long long)q->limits.max_hw_copy_range_sectors << 9); +} + +static ssize_t queue_copy_range_max_show(struct request_queue *q, + char *page) +{ + return sprintf(page, "%llu\n", + (unsigned long long)q->limits.max_copy_range_sectors << 9); +} + +static ssize_t queue_copy_range_max_store(struct request_queue *q, + const char *page, size_t count) +{ + unsigned long max_copy; + ssize_t ret = queue_var_store(&max_copy, page, count); + + if (ret < 0) + return ret; + + if (max_copy & (queue_logical_block_size(q) - 1)) + return -EINVAL; + + max_copy >>= 9; + if (max_copy > UINT_MAX) + return -EINVAL; + + if (max_copy > q->limits.max_hw_copy_range_sectors) + max_copy = q->limits.max_hw_copy_range_sectors; + + q->limits.max_copy_range_sectors = max_copy; + return ret; +} + +static ssize_t queue_copy_nr_ranges_max_hw_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.max_hw_copy_nr_ranges, page); +} + +static ssize_t queue_copy_nr_ranges_max_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_nr_ranges, page); +} + +static ssize_t queue_copy_nr_ranges_max_store(struct request_queue *q, + const char *page, size_t count) +{ + unsigned long max_nr; + ssize_t ret = queue_var_store(&max_nr, page, count); + + if (ret < 0) + return ret; + + if (max_nr > USHRT_MAX) + return -EINVAL; + + if (max_nr > q->limits.max_hw_copy_nr_ranges) + max_nr = q->limits.max_hw_copy_nr_ranges; + + q->limits.max_copy_nr_ranges = max_nr; + return ret; +} + static ssize_t queue_write_same_max_show(struct request_queue *q, char *page) { return queue_var_show(0, page); @@ -596,6 +719,14 @@ QUEUE_RO_ENTRY(queue_nr_zones, "nr_zones"); QUEUE_RO_ENTRY(queue_max_open_zones, "max_open_zones"); QUEUE_RO_ENTRY(queue_max_active_zones, "max_active_zones"); +QUEUE_RW_ENTRY(queue_copy_offload, "copy_offload"); +QUEUE_RO_ENTRY(queue_copy_max_hw, "copy_max_hw_bytes"); +QUEUE_RW_ENTRY(queue_copy_max, "copy_max_bytes"); +QUEUE_RO_ENTRY(queue_copy_range_max_hw, "copy_max_range_hw_bytes"); +QUEUE_RW_ENTRY(queue_copy_range_max, "copy_max_range_bytes"); +QUEUE_RO_ENTRY(queue_copy_nr_ranges_max_hw, "copy_max_nr_ranges_hw"); +QUEUE_RW_ENTRY(queue_copy_nr_ranges_max, "copy_max_nr_ranges"); + QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); QUEUE_RW_ENTRY(queue_poll, "io_poll"); @@ -642,6 +773,13 @@ static struct attribute *queue_attrs[] = { &queue_discard_max_entry.attr, &queue_discard_max_hw_entry.attr, &queue_discard_zeroes_data_entry.attr, + &queue_copy_offload_entry.attr, + &queue_copy_max_hw_entry.attr, + &queue_copy_max_entry.attr, + &queue_copy_range_max_hw_entry.attr, + &queue_copy_range_max_entry.attr, + &queue_copy_nr_ranges_max_hw_entry.attr, + &queue_copy_nr_ranges_max_entry.attr, &queue_write_same_max_entry.attr, &queue_write_zeroes_max_entry.attr, &queue_zone_append_max_entry.attr, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1b24c1fb3bb1..3596fd37fae7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -270,6 +270,13 @@ struct queue_limits { unsigned int discard_alignment; unsigned int zone_write_granularity; + unsigned long max_hw_copy_sectors; + unsigned long max_copy_sectors; + unsigned int max_hw_copy_range_sectors; + unsigned int max_copy_range_sectors; + unsigned short max_hw_copy_nr_ranges; + unsigned short max_copy_nr_ranges; + unsigned short max_segments; unsigned short max_integrity_segments; unsigned short max_discard_segments; @@ -574,6 +581,7 @@ struct request_queue { #define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */ #define QUEUE_FLAG_HCTX_ACTIVE 28 /* at least one blk-mq hctx is active */ #define QUEUE_FLAG_NOWAIT 29 /* device supports NOWAIT */ +#define QUEUE_FLAG_COPY 30 /* supports copy offload */ #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ @@ -596,6 +604,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) +#define blk_queue_copy(q) test_bit(QUEUE_FLAG_COPY, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) #define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags) @@ -960,6 +969,10 @@ extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int); extern void blk_queue_max_segments(struct request_queue *, unsigned short); extern void blk_queue_max_discard_segments(struct request_queue *, unsigned short); +extern void blk_queue_max_copy_sectors(struct request_queue *q, unsigned int max_copy_sectors); +extern void blk_queue_max_copy_range_sectors(struct request_queue *q, + unsigned int max_copy_range_sectors); +extern void blk_queue_max_copy_nr_ranges(struct request_queue *q, unsigned int max_copy_nr_ranges); void blk_queue_max_secure_erase_sectors(struct request_queue *q, unsigned int max_sectors); extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);