From 28af742875d7d2d8ae008701c60cd4b238f3e2b2 Mon Sep 17 00:00:00 2001 From: Max Gurtovoy Date: Mon, 5 Apr 2021 13:20:12 +0000 Subject: block: add sysfs entry for virt boundary mask This entry will expose the bio vector alignment mask for a specific block device. Signed-off-by: Max Gurtovoy Reviewed-by: Ming Lei Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20210405132012.12504-1-mgurtovoy@nvidia.com Signed-off-by: Jens Axboe --- block/blk-sysfs.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'block/blk-sysfs.c') diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 0f4f0c8a7825..e03bedf180ab 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -60,7 +60,7 @@ static ssize_t queue_var_store64(s64 *var, const char *page) static ssize_t queue_requests_show(struct request_queue *q, char *page) { - return queue_var_show(q->nr_requests, (page)); + return queue_var_show(q->nr_requests, page); } static ssize_t @@ -264,6 +264,11 @@ static ssize_t queue_max_hw_sectors_show(struct request_queue *q, char *page) return queue_var_show(max_hw_sectors_kb, (page)); } +static ssize_t queue_virt_boundary_mask_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.virt_boundary_mask, (page)); +} + #define QUEUE_SYSFS_BIT_FNS(name, flag, neg) \ static ssize_t \ queue_##name##_show(struct request_queue *q, char *page) \ @@ -610,6 +615,7 @@ QUEUE_RO_ENTRY(queue_fua, "fua"); QUEUE_RO_ENTRY(queue_dax, "dax"); QUEUE_RW_ENTRY(queue_io_timeout, "io_timeout"); QUEUE_RW_ENTRY(queue_wb_lat, "wbt_lat_usec"); +QUEUE_RO_ENTRY(queue_virt_boundary_mask, "virt_boundary_mask"); #ifdef CONFIG_BLK_DEV_THROTTLING_LOW QUEUE_RW_ENTRY(blk_throtl_sample_time, "throttle_sample_time"); @@ -670,6 +676,7 @@ static struct attribute *queue_attrs[] = { #ifdef CONFIG_BLK_DEV_THROTTLING_LOW &blk_throtl_sample_time_entry.attr, #endif + &queue_virt_boundary_mask_entry.attr, NULL, }; -- cgit v1.2.3