Commit 6a5ac984 authored by Bart Van Assche's avatar Bart Van Assche Committed by Jens Axboe

block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n

Exclude zoned block device members from struct request_queue for
CONFIG_BLK_DEV_ZONED == n. Avoid breaking the build by only building
the code that uses these struct request_queue members if
CONFIG_BLK_DEV_ZONED != n.
Signed-off-by: default avatarBart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
Cc: Matias Bjorling <mb@lightnvm.io>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 7c8542b7
......@@ -177,6 +177,10 @@ config BLK_DEBUG_FS
Unless you are building a kernel for a tiny system, you should
say Y here.
config BLK_DEBUG_FS_ZONED
bool
default BLK_DEBUG_FS && BLK_DEV_ZONED
config BLK_SED_OPAL
bool "Logic for interfacing with Opal enabled SEDs"
---help---
......
......@@ -34,4 +34,5 @@ obj-$(CONFIG_BLK_MQ_RDMA) += blk-mq-rdma.o
obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
obj-$(CONFIG_BLK_WBT) += blk-wbt.o
obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o
obj-$(CONFIG_BLK_DEBUG_FS_ZONED)+= blk-mq-debugfs-zoned.o
obj-$(CONFIG_BLK_SED_OPAL) += sed-opal.o
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2017 Western Digital Corporation or its affiliates.
*
* This file is released under the GPL.
*/
#include <linux/blkdev.h>
#include "blk-mq-debugfs.h"
int queue_zone_wlock_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
unsigned int i;
if (!q->seq_zones_wlock)
return 0;
for (i = 0; i < q->nr_zones; i++)
if (test_bit(i, q->seq_zones_wlock))
seq_printf(m, "%u\n", i);
return 0;
}
......@@ -206,21 +206,6 @@ static ssize_t queue_write_hint_store(void *data, const char __user *buf,
return count;
}
static int queue_zone_wlock_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
unsigned int i;
if (!q->seq_zones_wlock)
return 0;
for (i = 0; i < q->nr_zones; i++)
if (test_bit(i, q->seq_zones_wlock))
seq_printf(m, "%u\n", i);
return 0;
}
static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
{ "poll_stat", 0400, queue_poll_stat_show },
{ "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops },
......
......@@ -80,4 +80,13 @@ static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hc
}
#endif
#ifdef CONFIG_BLK_DEBUG_FS_ZONED
int queue_zone_wlock_show(void *data, struct seq_file *m);
#else
static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
{
return 0;
}
#endif
#endif
......@@ -592,6 +592,7 @@ struct request_queue {
struct queue_limits limits;
#ifdef CONFIG_BLK_DEV_ZONED
/*
* Zoned block device information for request dispatch control.
* nr_zones is the total number of zones of the device. This is always
......@@ -612,6 +613,7 @@ struct request_queue {
unsigned int nr_zones;
unsigned long *seq_zones_bitmap;
unsigned long *seq_zones_wlock;
#endif /* CONFIG_BLK_DEV_ZONED */
/*
* sg stuff
......@@ -800,6 +802,7 @@ static inline unsigned int blk_queue_zone_sectors(struct request_queue *q)
return blk_queue_is_zoned(q) ? q->limits.chunk_sectors : 0;
}
#ifdef CONFIG_BLK_DEV_ZONED
static inline unsigned int blk_queue_zone_no(struct request_queue *q,
sector_t sector)
{
......@@ -815,6 +818,7 @@ static inline bool blk_queue_zone_is_seq(struct request_queue *q,
return false;
return test_bit(blk_queue_zone_no(q, sector), q->seq_zones_bitmap);
}
#endif /* CONFIG_BLK_DEV_ZONED */
static inline bool rq_is_sync(struct request *rq)
{
......@@ -1065,6 +1069,7 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT;
}
#ifdef CONFIG_BLK_DEV_ZONED
static inline unsigned int blk_rq_zone_no(struct request *rq)
{
return blk_queue_zone_no(rq->q, blk_rq_pos(rq));
......@@ -1074,6 +1079,7 @@ static inline unsigned int blk_rq_zone_is_seq(struct request *rq)
{
return blk_queue_zone_is_seq(rq->q, blk_rq_pos(rq));
}
#endif /* CONFIG_BLK_DEV_ZONED */
/*
* Some commands like WRITE SAME have a payload or data transfer size which
......
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