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Tue, 17 Aug 2021 10:17:49 +0000 (GMT) From: SelvaKumar S To: linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: linux-api@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, kbusch@kernel.org, axboe@kernel.dk, damien.lemoal@wdc.com, asml.silence@gmail.com, johannes.thumshirn@wdc.com, hch@lst.de, willy@infradead.org, kch@kernel.org, martin.petersen@oracle.com, mpatocka@redhat.com, bvanassche@acm.org, djwong@kernel.org, snitzer@redhat.com, agk@redhat.com, selvajove@gmail.com, joshiiitr@gmail.com, nj.shetty@samsung.com, nitheshshetty@gmail.com, joshi.k@samsung.com, javier.gonz@samsung.com, SelvaKumar S Subject: [PATCH 2/7] block: Introduce queue limits for copy-offload support Date: Tue, 17 Aug 2021 15:44:18 +0530 Message-Id: <20210817101423.12367-3-selvakuma.s1@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210817101423.12367-1-selvakuma.s1@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA02Te1BUVRzH59y73N210CuSndYX7oQ8ElhyWQ4FqAPYncCGommUwfAGd4CA 3W0fYVEJJYlrYBCCLBAJhIImw7LgikCxCMiCMbIKI0QxvOIxvANRIttlsfzv8/ud7/d85/zO /Di4zXk2jxMjVjAyMR3HJzawapqcHF0kBdtogWGQiyoMLTjKL68B6Er/OQJlzz7CUcrpJQwZ hzei+uk8K1R2pRlDQ78tsNGq6ncMNT+ZIlDnVBOGMvXdANVpslio6mEqgep7X0F19W0sVFg6 wkZne3QEutT6D4YyUu9jSDecDFDNSiGO7mUV4WhgpoeNJpfbCPR15SJAK8v5xIHtlPFeIHVD 3c+mqi47U8Y7SkpTfoagqkpOUjcfJBHU3Egvi5ppuE9Q6dpyQC1odlKnfzmLBT8fGusdzdCR jMyOEUdIImPEUT78wJBwv3APkcDdxd0LefLtxHQ848P3Dwp2ORQTZxoG3+5jOk5pagXTcjnf zddbJlEqGLtoiVzhw2ekkXFSodRVTsfLleIoVzGjeM1dIHjVwyQ8HhudU/oAl646nxhR12BJ oPFlFeByICmEfbmdQAU2cGzImwCm3FnELMU8gAWnBwmzyoZcMp1M+D515Ksb1kX1AJYlTbIs xQKApzIm1xwE6QK7SzQsM9uS+2HZo3IrswgnDSyYM1PENh9sIQPhr1f7MTOzSHvYVzwAzGxN +sDVrMdWlrhdMLfroUnP4XBJX1g7b2+RbIZtucNr9+MmyVfVebj5fkhWcKFqcGHd6w//NvYA C2+BE61atoV5cGG6nrBwAhw9k41ZOAnA9JkEC++Hd+tWMXMuTjrBilo3S3sHPG+4hllyN8K0 leF1qzXUfT+8JofkHmi4LrK0t8PZptr1JAo2zqevjzoDwMelxVbfAjv1M89RP/Mc9f/JPwC8 HLzESOXxUYzcQ7pPzCT898kRkngNWNsP50AdGByYddUDjAP0AHJwvq21A4dH21hH0p98ysgk 4TJlHCPXAw/TuDNw3gsREtOCiRXh7kIvgVAkEgm99onc+S9ahwVto23IKFrBxDKMlJE99WEc Li8JU7b2poskgrfhuKJOtdch5Y34Wbbjc5UXl+q2bgod6Hr/u7mjo+fGG/RzM2EGbcGPiR07 HBzDDmcnF+0Jmes7rkrEPxRnfuP02ea3srryWphWp3HRl7v4Q/S7vddDrjnaO+S7njzyp6ZR PeZ428H3i45TCStl7wWoIz5vzzzWMlH6Tpqx5/KRi7rCg3jL0amf3lRtSiweGhjL6bDrnBbr V4S83Luhbtrm/LEL7W3VCv+d1VJugm5RXxLA1/jZD1V6lx2Q+C1zZ7O0HdzDly5oPcm0RuOJ IOcyz/gnqcc+GE5me/7x827V3kMRt27l2KZEjXpT4MbW9m6971+34z5qfX331QAXPkseTbs7 4zI5/S/ElVd9qAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA02Ra0xSYRzGe885HY5O3BGdvaFpw6xFw8ty6y3TtPXhbNXyQ31xbUV4RpYi QWKxmjZnGpplkSVZdnFesKZhESV2wbSoDEu0tEhdOl03pfJSDEu0tr49+/9+e54PfwrntRN8 KlW2n1XIxGkC0pswtghCRS+LgsRRxQMYqn/ahqNyvRGgOscJEpWO/cRRXv4EhjoHfVHz1/Pz UW1dK4Y+vPvOQW7Newy1/v5CItuXFgydsnQDZDZoCdQ4WUCi5t4VyNxsJVBF1RAHFb42kaj6 8TSGSgq6MGQaPAKQ0VWBI7v2Co76R19z0KcpK4mO3hgHyDVVTiYEM532jcwdnYPDNNYImc72 TMagP0YyjZXZTFNPDsk4h3oJZvReF8kU39QD5rshhMl/UIgl+SR7r01h01JVrCIyfqf37rNV PbjcLTwwpDNiOeDhEg3woiAdA8t19zAN8KZ4dBOAfafN8+dAMLzuOEbOZX9YOz3MmZOcAI7m OTgeQNIi2F1pIDw5gE6Ez74ZZ5tw+iMB3zuacA/wpzfCF9ccmCcTdDh8e7UfeDKXjoNu7a+/ a6Gw7NXkTClFedHx8O63cM+ZN6PcN5/hzOl+0Fo2OLuFz+i5t87jJwGt+w/p/kOXAKYHC1m5 Ml2aroyWR8vYrAilOF2ZKZNGSDLSDWD248LlJnBbPxZhARgFLABSuCCAu4zii3ncFPFBNavI 2KHITGOVFhBEEYIF3A6NdQePlor3s3tZVs4q/lGM8uLnYAkjU4UuEX+A/mx9vvJCrCgv9+YD y+P+krstiuitt2qimpU250BbRbzGbghVNa7JnCd89Wtd0XbR5oWfQ2SL9paeq+28/qNvsaRh 9YYXRTH8uOqwa7V+a22l7jTXrrDlleY7yeolZd1T82JNv/ttkUEq7ctzdIp2U+BOqSog92Li gkdhJndf1/qJLdn+9tREv0PVS+tH9nRIWiXq47acJ4rcWN99+zomOc4s53BCwciN43zoMyFK inpanDVsjH2iFmzreRZJ1j86XM9tSPwIzkjtvW1r3sRZJF+rerOniwSjrnWqwJiQVUnB8sBy 38qjLlcDqV76dprHjB+4cvqyoURAKHeLo4W4Qin+A10p3OdgAwAA X-CMS-MailID: 20210817101753epcas5p4f4257f8edda27e184ecbb273b700ccbc X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210817101753epcas5p4f4257f8edda27e184ecbb273b700ccbc References: <20210817101423.12367-1-selvakuma.s1@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Nitesh Shetty Add device limits as sysfs entries, - copy_offload (READ_WRITE) - max_copy_sectors (READ_ONLY) - max_copy_ranges_sectors (READ_ONLY) - max_copy_nr_ranges (READ_ONLY) copy_offload(= 0), is disabled by default. This needs to be enabled if copy-offload needs to be used. max_copy_sectors = 0, indicates the device doesn't support native copy. Signed-off-by: Nitesh Shetty Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi --- block/blk-settings.c | 4 ++++ block/blk-sysfs.c | 51 ++++++++++++++++++++++++++++++++++++++++++ include/linux/blkdev.h | 6 +++++ 3 files changed, 61 insertions(+) diff --git a/block/blk-settings.c b/block/blk-settings.c index 3613d2cc0688..ac59922e0cde 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -57,6 +57,10 @@ void blk_set_default_limits(struct queue_limits *lim) lim->misaligned = 0; lim->zoned = BLK_ZONED_NONE; lim->zone_write_granularity = 0; + lim->copy_offload = 0; + lim->max_copy_sectors = 0; + lim->max_copy_nr_ranges = 0; + lim->max_copy_range_sectors = 0; } EXPORT_SYMBOL(blk_set_default_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 1832587dce3a..aabab65f10ab 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -169,6 +169,48 @@ static ssize_t queue_discard_granularity_show(struct request_queue *q, char *pag return queue_var_show(q->limits.discard_granularity, page); } +static ssize_t queue_copy_offload_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.copy_offload, 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_copy_sectors == 0) + return -EINVAL; + + if (copy_offload) + q->limits.copy_offload = BLK_COPY_OFFLOAD_SCC; + else + q->limits.copy_offload = 0; + + return ret; +} + +static ssize_t queue_max_copy_sectors_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.max_copy_sectors, page); +} + +static ssize_t queue_max_copy_range_sectors_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_range_sectors, page); +} + +static ssize_t queue_max_copy_nr_ranges_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_nr_ranges, page); +} + static ssize_t queue_discard_max_hw_show(struct request_queue *q, char *page) { @@ -611,6 +653,11 @@ 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_max_copy_sectors, "max_copy_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_range_sectors, "max_copy_range_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_nr_ranges, "max_copy_nr_ranges"); + QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); QUEUE_RW_ENTRY(queue_poll, "io_poll"); @@ -657,6 +704,10 @@ 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_max_copy_sectors_entry.attr, + &queue_max_copy_range_sectors_entry.attr, + &queue_max_copy_nr_ranges_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 28a193225cf2..fd4cfaadda5b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -321,10 +321,14 @@ struct queue_limits { unsigned int discard_granularity; unsigned int discard_alignment; unsigned int zone_write_granularity; + unsigned int copy_offload; + unsigned int max_copy_sectors; unsigned short max_segments; unsigned short max_integrity_segments; unsigned short max_discard_segments; + unsigned short max_copy_range_sectors; + unsigned short max_copy_nr_ranges; unsigned char misaligned; unsigned char discard_misaligned; @@ -600,6 +604,7 @@ 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_SIMPLE_COPY 30 /* supports simple copy */ #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ @@ -622,6 +627,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #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_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) +#define blk_queue_copy(q) test_bit(QUEUE_FLAG_SIMPLE_COPY, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) #define blk_queue_secure_erase(q) \ -- 2.25.1 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 X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Nitesh Shetty Add device limits as sysfs entries, - copy_offload (READ_WRITE) - max_copy_sectors (READ_ONLY) - max_copy_ranges_sectors (READ_ONLY) - max_copy_nr_ranges (READ_ONLY) copy_offload(= 0), is disabled by default. This needs to be enabled if copy-offload needs to be used. max_copy_sectors = 0, indicates the device doesn't support native copy. Signed-off-by: Nitesh Shetty Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi --- block/blk-settings.c | 4 ++++ block/blk-sysfs.c | 51 ++++++++++++++++++++++++++++++++++++++++++ include/linux/blkdev.h | 6 +++++ 3 files changed, 61 insertions(+) diff --git a/block/blk-settings.c b/block/blk-settings.c index 3613d2cc0688..ac59922e0cde 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -57,6 +57,10 @@ void blk_set_default_limits(struct queue_limits *lim) lim->misaligned = 0; lim->zoned = BLK_ZONED_NONE; lim->zone_write_granularity = 0; + lim->copy_offload = 0; + lim->max_copy_sectors = 0; + lim->max_copy_nr_ranges = 0; + lim->max_copy_range_sectors = 0; } EXPORT_SYMBOL(blk_set_default_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 1832587dce3a..aabab65f10ab 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -169,6 +169,48 @@ static ssize_t queue_discard_granularity_show(struct request_queue *q, char *pag return queue_var_show(q->limits.discard_granularity, page); } +static ssize_t queue_copy_offload_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.copy_offload, 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_copy_sectors == 0) + return -EINVAL; + + if (copy_offload) + q->limits.copy_offload = BLK_COPY_OFFLOAD_SCC; + else + q->limits.copy_offload = 0; + + return ret; +} + +static ssize_t queue_max_copy_sectors_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.max_copy_sectors, page); +} + +static ssize_t queue_max_copy_range_sectors_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_range_sectors, page); +} + +static ssize_t queue_max_copy_nr_ranges_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_nr_ranges, page); +} + static ssize_t queue_discard_max_hw_show(struct request_queue *q, char *page) { @@ -611,6 +653,11 @@ 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_max_copy_sectors, "max_copy_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_range_sectors, "max_copy_range_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_nr_ranges, "max_copy_nr_ranges"); + QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); QUEUE_RW_ENTRY(queue_poll, "io_poll"); @@ -657,6 +704,10 @@ 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_max_copy_sectors_entry.attr, + &queue_max_copy_range_sectors_entry.attr, + &queue_max_copy_nr_ranges_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 28a193225cf2..fd4cfaadda5b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -321,10 +321,14 @@ struct queue_limits { unsigned int discard_granularity; unsigned int discard_alignment; unsigned int zone_write_granularity; + unsigned int copy_offload; + unsigned int max_copy_sectors; unsigned short max_segments; unsigned short max_integrity_segments; unsigned short max_discard_segments; + unsigned short max_copy_range_sectors; + unsigned short max_copy_nr_ranges; unsigned char misaligned; unsigned char discard_misaligned; @@ -600,6 +604,7 @@ 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_SIMPLE_COPY 30 /* supports simple copy */ #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ @@ -622,6 +627,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #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_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) +#define blk_queue_copy(q) test_bit(QUEUE_FLAG_SIMPLE_COPY, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) #define blk_queue_secure_erase(q) \ -- 2.25.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme 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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEA94C4338F for ; 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Tue, 17 Aug 2021 10:17:49 +0000 (GMT) From: SelvaKumar S To: linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Date: Tue, 17 Aug 2021 15:44:18 +0530 Message-Id: <20210817101423.12367-3-selvakuma.s1@samsung.com> In-Reply-To: <20210817101423.12367-1-selvakuma.s1@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Te1BUVRzH59y73N210CuSndYX7oQ8ElhyWQ4FqAPYncCGommUwfAGd4CA 3W0fYVEJJYlrYBCCLBAJhIImw7LgikCxCMiCMbIKI0QxvOIxvANRIttlsfzv8/ud7/d85/zO /Di4zXk2jxMjVjAyMR3HJzawapqcHF0kBdtogWGQiyoMLTjKL68B6Er/OQJlzz7CUcrpJQwZ hzei+uk8K1R2pRlDQ78tsNGq6ncMNT+ZIlDnVBOGMvXdANVpslio6mEqgep7X0F19W0sVFg6 wkZne3QEutT6D4YyUu9jSDecDFDNSiGO7mUV4WhgpoeNJpfbCPR15SJAK8v5xIHtlPFeIHVD 3c+mqi47U8Y7SkpTfoagqkpOUjcfJBHU3Egvi5ppuE9Q6dpyQC1odlKnfzmLBT8fGusdzdCR jMyOEUdIImPEUT78wJBwv3APkcDdxd0LefLtxHQ848P3Dwp2ORQTZxoG3+5jOk5pagXTcjnf zddbJlEqGLtoiVzhw2ekkXFSodRVTsfLleIoVzGjeM1dIHjVwyQ8HhudU/oAl646nxhR12BJ oPFlFeByICmEfbmdQAU2cGzImwCm3FnELMU8gAWnBwmzyoZcMp1M+D515Ksb1kX1AJYlTbIs xQKApzIm1xwE6QK7SzQsM9uS+2HZo3IrswgnDSyYM1PENh9sIQPhr1f7MTOzSHvYVzwAzGxN +sDVrMdWlrhdMLfroUnP4XBJX1g7b2+RbIZtucNr9+MmyVfVebj5fkhWcKFqcGHd6w//NvYA C2+BE61atoV5cGG6nrBwAhw9k41ZOAnA9JkEC++Hd+tWMXMuTjrBilo3S3sHPG+4hllyN8K0 leF1qzXUfT+8JofkHmi4LrK0t8PZptr1JAo2zqevjzoDwMelxVbfAjv1M89RP/Mc9f/JPwC8 HLzESOXxUYzcQ7pPzCT898kRkngNWNsP50AdGByYddUDjAP0AHJwvq21A4dH21hH0p98ysgk 4TJlHCPXAw/TuDNw3gsREtOCiRXh7kIvgVAkEgm99onc+S9ahwVto23IKFrBxDKMlJE99WEc Li8JU7b2poskgrfhuKJOtdch5Y34Wbbjc5UXl+q2bgod6Hr/u7mjo+fGG/RzM2EGbcGPiR07 HBzDDmcnF+0Jmes7rkrEPxRnfuP02ea3srryWphWp3HRl7v4Q/S7vddDrjnaO+S7njzyp6ZR PeZ428H3i45TCStl7wWoIz5vzzzWMlH6Tpqx5/KRi7rCg3jL0amf3lRtSiweGhjL6bDrnBbr V4S83Luhbtrm/LEL7W3VCv+d1VJugm5RXxLA1/jZD1V6lx2Q+C1zZ7O0HdzDly5oPcm0RuOJ IOcyz/gnqcc+GE5me/7x827V3kMRt27l2KZEjXpT4MbW9m6971+34z5qfX331QAXPkseTbs7 4zI5/S/ElVd9qAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA02Ra0xSYRzGe885HY5O3BGdvaFpw6xFw8ty6y3TtPXhbNXyQ31xbUV4RpYi QWKxmjZnGpplkSVZdnFesKZhESV2wbSoDEu0tEhdOl03pfJSDEu0tr49+/9+e54PfwrntRN8 KlW2n1XIxGkC0pswtghCRS+LgsRRxQMYqn/ahqNyvRGgOscJEpWO/cRRXv4EhjoHfVHz1/Pz UW1dK4Y+vPvOQW7Newy1/v5CItuXFgydsnQDZDZoCdQ4WUCi5t4VyNxsJVBF1RAHFb42kaj6 8TSGSgq6MGQaPAKQ0VWBI7v2Co76R19z0KcpK4mO3hgHyDVVTiYEM532jcwdnYPDNNYImc72 TMagP0YyjZXZTFNPDsk4h3oJZvReF8kU39QD5rshhMl/UIgl+SR7r01h01JVrCIyfqf37rNV PbjcLTwwpDNiOeDhEg3woiAdA8t19zAN8KZ4dBOAfafN8+dAMLzuOEbOZX9YOz3MmZOcAI7m OTgeQNIi2F1pIDw5gE6Ez74ZZ5tw+iMB3zuacA/wpzfCF9ccmCcTdDh8e7UfeDKXjoNu7a+/ a6Gw7NXkTClFedHx8O63cM+ZN6PcN5/hzOl+0Fo2OLuFz+i5t87jJwGt+w/p/kOXAKYHC1m5 Ml2aroyWR8vYrAilOF2ZKZNGSDLSDWD248LlJnBbPxZhARgFLABSuCCAu4zii3ncFPFBNavI 2KHITGOVFhBEEYIF3A6NdQePlor3s3tZVs4q/lGM8uLnYAkjU4UuEX+A/mx9vvJCrCgv9+YD y+P+krstiuitt2qimpU250BbRbzGbghVNa7JnCd89Wtd0XbR5oWfQ2SL9paeq+28/qNvsaRh 9YYXRTH8uOqwa7V+a22l7jTXrrDlleY7yeolZd1T82JNv/ttkUEq7ctzdIp2U+BOqSog92Li gkdhJndf1/qJLdn+9tREv0PVS+tH9nRIWiXq47acJ4rcWN99+zomOc4s53BCwciN43zoMyFK inpanDVsjH2iFmzreRZJ1j86XM9tSPwIzkjtvW1r3sRZJF+rerOniwSjrnWqwJiQVUnB8sBy 38qjLlcDqV76dprHjB+4cvqyoURAKHeLo4W4Qin+A10p3OdgAwAA X-CMS-MailID: 20210817101753epcas5p4f4257f8edda27e184ecbb273b700ccbc X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210817101753epcas5p4f4257f8edda27e184ecbb273b700ccbc References: <20210817101423.12367-1-selvakuma.s1@samsung.com> X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 17HBYUAr010095 X-loop: dm-devel@redhat.com Cc: snitzer@redhat.com, djwong@kernel.org, dm-devel@redhat.com, hch@lst.de, agk@redhat.com, bvanassche@acm.org, linux-scsi@vger.kernel.org, nitheshshetty@gmail.com, willy@infradead.org, nj.shetty@samsung.com, kch@kernel.org, SelvaKumar S , selvajove@gmail.com, mpatocka@redhat.com, javier.gonz@samsung.com, kbusch@kernel.org, axboe@kernel.dk, damien.lemoal@wdc.com, joshi.k@samsung.com, martin.petersen@oracle.com, linux-api@vger.kernel.org, johannes.thumshirn@wdc.com, linux-fsdevel@vger.kernel.org, joshiiitr@gmail.com, asml.silence@gmail.com Subject: [dm-devel] [PATCH 2/7] block: Introduce queue limits for copy-offload support X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Nitesh Shetty Add device limits as sysfs entries, - copy_offload (READ_WRITE) - max_copy_sectors (READ_ONLY) - max_copy_ranges_sectors (READ_ONLY) - max_copy_nr_ranges (READ_ONLY) copy_offload(= 0), is disabled by default. This needs to be enabled if copy-offload needs to be used. max_copy_sectors = 0, indicates the device doesn't support native copy. Signed-off-by: Nitesh Shetty Signed-off-by: SelvaKumar S Signed-off-by: Kanchan Joshi --- block/blk-settings.c | 4 ++++ block/blk-sysfs.c | 51 ++++++++++++++++++++++++++++++++++++++++++ include/linux/blkdev.h | 6 +++++ 3 files changed, 61 insertions(+) diff --git a/block/blk-settings.c b/block/blk-settings.c index 3613d2cc0688..ac59922e0cde 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -57,6 +57,10 @@ void blk_set_default_limits(struct queue_limits *lim) lim->misaligned = 0; lim->zoned = BLK_ZONED_NONE; lim->zone_write_granularity = 0; + lim->copy_offload = 0; + lim->max_copy_sectors = 0; + lim->max_copy_nr_ranges = 0; + lim->max_copy_range_sectors = 0; } EXPORT_SYMBOL(blk_set_default_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 1832587dce3a..aabab65f10ab 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -169,6 +169,48 @@ static ssize_t queue_discard_granularity_show(struct request_queue *q, char *pag return queue_var_show(q->limits.discard_granularity, page); } +static ssize_t queue_copy_offload_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.copy_offload, 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_copy_sectors == 0) + return -EINVAL; + + if (copy_offload) + q->limits.copy_offload = BLK_COPY_OFFLOAD_SCC; + else + q->limits.copy_offload = 0; + + return ret; +} + +static ssize_t queue_max_copy_sectors_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.max_copy_sectors, page); +} + +static ssize_t queue_max_copy_range_sectors_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_range_sectors, page); +} + +static ssize_t queue_max_copy_nr_ranges_show(struct request_queue *q, + char *page) +{ + return queue_var_show(q->limits.max_copy_nr_ranges, page); +} + static ssize_t queue_discard_max_hw_show(struct request_queue *q, char *page) { @@ -611,6 +653,11 @@ 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_max_copy_sectors, "max_copy_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_range_sectors, "max_copy_range_sectors"); +QUEUE_RO_ENTRY(queue_max_copy_nr_ranges, "max_copy_nr_ranges"); + QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); QUEUE_RW_ENTRY(queue_poll, "io_poll"); @@ -657,6 +704,10 @@ 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_max_copy_sectors_entry.attr, + &queue_max_copy_range_sectors_entry.attr, + &queue_max_copy_nr_ranges_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 28a193225cf2..fd4cfaadda5b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -321,10 +321,14 @@ struct queue_limits { unsigned int discard_granularity; unsigned int discard_alignment; unsigned int zone_write_granularity; + unsigned int copy_offload; + unsigned int max_copy_sectors; unsigned short max_segments; unsigned short max_integrity_segments; unsigned short max_discard_segments; + unsigned short max_copy_range_sectors; + unsigned short max_copy_nr_ranges; unsigned char misaligned; unsigned char discard_misaligned; @@ -600,6 +604,7 @@ 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_SIMPLE_COPY 30 /* supports simple copy */ #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ @@ -622,6 +627,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #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_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) +#define blk_queue_copy(q) test_bit(QUEUE_FLAG_SIMPLE_COPY, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) #define blk_queue_secure_erase(q) \ -- 2.25.1 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel