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Date: Tue, 12 Jun 2018 14:44:49 +0000
From: Javier Gonzalez <javier@...xlabs.com>
To: Matias Bjørling <mb@...htnvm.io>
CC: "Konopko, Igor J" <igor.j.konopko@...el.com>,
"marcin.dziegielewski@...el.com" <marcin.dziegielewski@...el.com>,
"Hans Holmberg" <hans.holmberg@...xlabs.com>,
"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] lightnvm: move NVM_DEBUG to pblk
> On 12 Jun 2018, at 04.29, Matias Bjørling <mb@...htnvm.io> wrote:
>
> There is no users of CONFIG_NVM_DEBUG in the LightNVM subsystem. All
> users are in pblk. Rename NVM_DEBUG to NVM_PBLK_DEBUG and enable
> only for pblk.
>
> Also fix up the CONFIG_NVM_PBLK entry to follow the code style for
> Kconfig files.
>
> Signed-off-by: Matias Bjørling <mb@...htnvm.io>
> ---
> drivers/lightnvm/Kconfig | 32 +++++++++++++++++---------------
> drivers/lightnvm/pblk-cache.c | 4 ++--
> drivers/lightnvm/pblk-core.c | 26 +++++++++++++-------------
> drivers/lightnvm/pblk-gc.c | 2 +-
> drivers/lightnvm/pblk-init.c | 8 ++++----
> drivers/lightnvm/pblk-rb.c | 16 ++++++++--------
> drivers/lightnvm/pblk-read.c | 28 ++++++++++++++--------------
> drivers/lightnvm/pblk-sysfs.c | 8 ++++----
> drivers/lightnvm/pblk-write.c | 14 +++++++-------
> drivers/lightnvm/pblk.h | 6 +++---
> 10 files changed, 73 insertions(+), 71 deletions(-)
>
> diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
> index 10c08982185a..7a281a91f1c1 100644
> --- a/drivers/lightnvm/Kconfig
> +++ b/drivers/lightnvm/Kconfig
> @@ -17,23 +17,25 @@ menuconfig NVM
>
> if NVM
>
> -config NVM_DEBUG
> - bool "Open-Channel SSD debugging support"
> - default n
> - ---help---
> - Exposes a debug management interface to create/remove targets at:
> -
> - /sys/module/lnvm/parameters/configure_debug
> -
> - It is required to create/remove targets without IOCTLs.
> -
> config NVM_PBLK
> tristate "Physical Block Device Open-Channel SSD target"
> - ---help---
> - Allows an open-channel SSD to be exposed as a block device to the
> - host. The target assumes the device exposes raw flash and must be
> - explicitly managed by the host.
> + help
> + Allows an open-channel SSD to be exposed as a block device to the
> + host. The target assumes the device exposes raw flash and must be
> + explicitly managed by the host.
>
> - Please note the disk format is considered EXPERIMENTAL for now.
> + Please note the disk format is considered EXPERIMENTAL for now.
> +
> +if NVM_PBLK
> +
> +config NVM_PBLK_DEBUG
> + bool "PBlk Debug Support"
> + default n
> + help
> + Enables debug support for pblk. This includes extra checks, more
> + vocal error messages, and extra tracking fields in the pblk sysfs
> + entries.
> +
> +endif # NVM_PBLK_DEBUG
>
> endif # NVM
> diff --git a/drivers/lightnvm/pblk-cache.c b/drivers/lightnvm/pblk-cache.c
> index b1c6d7eb6115..77d811962818 100644
> --- a/drivers/lightnvm/pblk-cache.c
> +++ b/drivers/lightnvm/pblk-cache.c
> @@ -67,7 +67,7 @@ int pblk_write_to_cache(struct pblk *pblk, struct bio *bio, unsigned long flags)
>
> atomic64_add(nr_entries, &pblk->user_wa);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(nr_entries, &pblk->inflight_writes);
> atomic_long_add(nr_entries, &pblk->req_writes);
> #endif
> @@ -123,7 +123,7 @@ int pblk_write_gc_to_cache(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
>
> atomic64_add(valid_entries, &pblk->gc_wa);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(valid_entries, &pblk->inflight_writes);
> atomic_long_add(valid_entries, &pblk->recov_gc_writes);
> #endif
> diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
> index ed9cc977c8b3..66ab1036f2fb 100644
> --- a/drivers/lightnvm/pblk-core.c
> +++ b/drivers/lightnvm/pblk-core.c
> @@ -194,7 +194,7 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
> u64 paddr;
> int line_id;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Callers must ensure that the ppa points to a device address */
> BUG_ON(pblk_addr_in_cache(ppa));
> BUG_ON(pblk_ppa_empty(ppa));
> @@ -430,7 +430,7 @@ void pblk_discard(struct pblk *pblk, struct bio *bio)
> void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd)
> {
> atomic_long_inc(&pblk->write_failed);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pblk_print_failed_rqd(pblk, rqd, rqd->error);
> #endif
> }
> @@ -454,7 +454,7 @@ void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd)
> default:
> pr_err("pblk: unknown read error:%d\n", rqd->error);
> }
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pblk_print_failed_rqd(pblk, rqd, rqd->error);
> #endif
> }
> @@ -470,7 +470,7 @@ int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
>
> atomic_inc(&pblk->inflight_io);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> if (pblk_check_io(pblk, rqd))
> return NVM_IO_ERR;
> #endif
> @@ -484,7 +484,7 @@ int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
>
> atomic_inc(&pblk->inflight_io);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> if (pblk_check_io(pblk, rqd))
> return NVM_IO_ERR;
> #endif
> @@ -1726,7 +1726,7 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
> struct list_head *move_list;
> int i;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> WARN(!bitmap_full(line->map_bitmap, lm->sec_per_line),
> "pblk: corrupt closed line %d\n", line->id);
> #endif
> @@ -1856,7 +1856,7 @@ static void __pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list,
> * Only send one inflight I/O per LUN. Since we map at a page
> * granurality, all ppas in the I/O will map to the same LUN
> */
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> int i;
>
> for (i = 1; i < nr_ppas; i++)
> @@ -1901,7 +1901,7 @@ void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas)
> struct pblk_lun *rlun;
> int pos = pblk_ppa_to_pos(geo, ppa_list[0]);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> int i;
>
> for (i = 1; i < nr_ppas; i++)
> @@ -1951,7 +1951,7 @@ void pblk_update_map(struct pblk *pblk, sector_t lba, struct ppa_addr ppa)
> void pblk_update_map_cache(struct pblk *pblk, sector_t lba, struct ppa_addr ppa)
> {
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Callers must ensure that the ppa points to a cache address */
> BUG_ON(!pblk_addr_in_cache(ppa));
> BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa)));
> @@ -1966,7 +1966,7 @@ int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa_new,
> struct ppa_addr ppa_l2p, ppa_gc;
> int ret = 1;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Callers must ensure that the ppa points to a cache address */
> BUG_ON(!pblk_addr_in_cache(ppa_new));
> BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa_new)));
> @@ -2003,14 +2003,14 @@ void pblk_update_map_dev(struct pblk *pblk, sector_t lba,
> {
> struct ppa_addr ppa_l2p;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Callers must ensure that the ppa points to a device address */
> BUG_ON(pblk_addr_in_cache(ppa_mapped));
> #endif
> /* Invalidate and discard padded entries */
> if (lba == ADDR_EMPTY) {
> atomic64_inc(&pblk->pad_wa);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_inc(&pblk->padded_wb);
> #endif
> if (!pblk_ppa_empty(ppa_mapped))
> @@ -2036,7 +2036,7 @@ void pblk_update_map_dev(struct pblk *pblk, sector_t lba,
> goto out;
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> WARN_ON(!pblk_addr_in_cache(ppa_l2p) && !pblk_ppa_empty(ppa_l2p));
> #endif
>
> diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
> index df88f1bdd921..1a4186ddca4b 100644
> --- a/drivers/lightnvm/pblk-gc.c
> +++ b/drivers/lightnvm/pblk-gc.c
> @@ -521,7 +521,7 @@ static int pblk_gc_reader_ts(void *data)
> io_schedule();
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pr_info("pblk: flushing gc pipeline, %d lines left\n",
> atomic_read(&gc->pipeline_gc));
> #endif
> diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
> index ce561f5d48ce..5957744c3aab 100644
> --- a/drivers/lightnvm/pblk-init.c
> +++ b/drivers/lightnvm/pblk-init.c
> @@ -91,7 +91,7 @@ static size_t pblk_trans_map_size(struct pblk *pblk)
> return entry_size * pblk->rl.nr_secs;
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> static u32 pblk_l2p_crc(struct pblk *pblk)
> {
> size_t map_size;
> @@ -122,7 +122,7 @@ static int pblk_l2p_recover(struct pblk *pblk, bool factory_init)
> }
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pr_info("pblk init: L2P CRC: %x\n", pblk_l2p_crc(pblk));
> #endif
>
> @@ -1165,7 +1165,7 @@ static void pblk_exit(void *private, bool graceful)
> pblk_gc_exit(pblk, graceful);
> pblk_tear_down(pblk, graceful);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pr_info("pblk exit: L2P CRC: %x\n", pblk_l2p_crc(pblk));
> #endif
>
> @@ -1216,7 +1216,7 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
> spin_lock_init(&pblk->trans_lock);
> spin_lock_init(&pblk->lock);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_set(&pblk->inflight_writes, 0);
> atomic_long_set(&pblk->padded_writes, 0);
> atomic_long_set(&pblk->padded_wb, 0);
> diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c
> index 00cd1f20a196..a81a97e8ea6d 100644
> --- a/drivers/lightnvm/pblk-rb.c
> +++ b/drivers/lightnvm/pblk-rb.c
> @@ -111,7 +111,7 @@ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
> } while (iter > 0);
> up_write(&pblk_rb_lock);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_set(&rb->inflight_flush_point, 0);
> #endif
>
> @@ -308,7 +308,7 @@ void pblk_rb_write_entry_user(struct pblk_rb *rb, void *data,
>
> entry = &rb->entries[ring_pos];
> flags = READ_ONCE(entry->w_ctx.flags);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Caller must guarantee that the entry is free */
> BUG_ON(!(flags & PBLK_WRITABLE_ENTRY));
> #endif
> @@ -332,7 +332,7 @@ void pblk_rb_write_entry_gc(struct pblk_rb *rb, void *data,
>
> entry = &rb->entries[ring_pos];
> flags = READ_ONCE(entry->w_ctx.flags);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Caller must guarantee that the entry is free */
> BUG_ON(!(flags & PBLK_WRITABLE_ENTRY));
> #endif
> @@ -362,7 +362,7 @@ static int pblk_rb_flush_point_set(struct pblk_rb *rb, struct bio *bio,
> return 0;
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_inc(&rb->inflight_flush_point);
> #endif
>
> @@ -588,7 +588,7 @@ unsigned int pblk_rb_read_to_bio(struct pblk_rb *rb, struct nvm_rq *rqd,
> atomic64_add(pad, &pblk->pad_wa);
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(pad, &pblk->padded_writes);
> #endif
>
> @@ -613,7 +613,7 @@ int pblk_rb_copy_to_bio(struct pblk_rb *rb, struct bio *bio, sector_t lba,
> int ret = 1;
>
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Caller must ensure that the access will not cause an overflow */
> BUG_ON(pos >= rb->nr_entries);
> #endif
> @@ -820,7 +820,7 @@ ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf)
> rb->subm,
> rb->sync,
> rb->l2p_update,
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_read(&rb->inflight_flush_point),
> #else
> 0,
> @@ -838,7 +838,7 @@ ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf)
> rb->subm,
> rb->sync,
> rb->l2p_update,
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_read(&rb->inflight_flush_point),
> #else
> 0,
> diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
> index 18694694e5f0..6e93c489ce57 100644
> --- a/drivers/lightnvm/pblk-read.c
> +++ b/drivers/lightnvm/pblk-read.c
> @@ -28,7 +28,7 @@ static int pblk_read_from_cache(struct pblk *pblk, struct bio *bio,
> sector_t lba, struct ppa_addr ppa,
> int bio_iter, bool advanced_bio)
> {
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Callers must ensure that the ppa points to a cache address */
> BUG_ON(pblk_ppa_empty(ppa));
> BUG_ON(!pblk_addr_in_cache(ppa));
> @@ -79,7 +79,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
> WARN_ON(test_and_set_bit(i, read_bitmap));
> meta_list[i].lba = cpu_to_le64(lba);
> advanced_bio = true;
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_inc(&pblk->cache_reads);
> #endif
> } else {
> @@ -97,7 +97,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
> else
> rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(nr_secs, &pblk->inflight_reads);
> #endif
> }
> @@ -117,7 +117,7 @@ static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
> continue;
>
> if (lba != blba + i) {
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> struct ppa_addr *p;
>
> p = (nr_lbas == 1) ? &rqd->ppa_list[i] : &rqd->ppa_addr;
> @@ -149,7 +149,7 @@ static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
> meta_lba = le64_to_cpu(meta_lba_list[j].lba);
>
> if (lba != meta_lba) {
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> struct ppa_addr *p;
> int nr_ppas = rqd->nr_ppas;
>
> @@ -185,7 +185,7 @@ static void pblk_read_put_rqd_kref(struct pblk *pblk, struct nvm_rq *rqd)
>
> static void pblk_end_user_read(struct bio *bio)
> {
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> WARN_ONCE(bio->bi_status, "pblk: corrupted read bio\n");
> #endif
> bio_endio(bio);
> @@ -212,7 +212,7 @@ static void __pblk_end_io_read(struct pblk *pblk, struct nvm_rq *rqd,
> if (put_line)
> pblk_read_put_rqd_kref(pblk, rqd);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(rqd->nr_ppas, &pblk->sync_reads);
> atomic_long_sub(rqd->nr_ppas, &pblk->inflight_reads);
> #endif
> @@ -285,7 +285,7 @@ static int pblk_partial_read(struct pblk *pblk, struct nvm_rq *rqd,
>
> if (rqd->error) {
> atomic_long_inc(&pblk->read_failed);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pblk_print_failed_rqd(pblk, rqd, rqd->error);
> #endif
> }
> @@ -359,7 +359,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
>
> pblk_lookup_l2p_seq(pblk, &ppa, lba, 1);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_inc(&pblk->inflight_reads);
> #endif
>
> @@ -382,7 +382,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
> WARN_ON(test_and_set_bit(0, read_bitmap));
> meta_list[0].lba = cpu_to_le64(lba);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_inc(&pblk->cache_reads);
> #endif
> } else {
> @@ -514,7 +514,7 @@ static int read_ppalist_rq_gc(struct pblk *pblk, struct nvm_rq *rqd,
> rqd->ppa_list[valid_secs++] = ppa_list_l2p[i];
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(valid_secs, &pblk->inflight_reads);
> #endif
>
> @@ -548,7 +548,7 @@ static int read_rq_gc(struct pblk *pblk, struct nvm_rq *rqd,
> rqd->ppa_addr = ppa_l2p;
> valid_secs = 1;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_inc(&pblk->inflight_reads);
> #endif
>
> @@ -619,12 +619,12 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
>
> if (rqd.error) {
> atomic_long_inc(&pblk->read_failed_gc);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> pblk_print_failed_rqd(pblk, &rqd, rqd.error);
> #endif
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(gc_rq->secs_to_gc, &pblk->sync_reads);
> atomic_long_add(gc_rq->secs_to_gc, &pblk->recov_gc_reads);
> atomic_long_sub(gc_rq->secs_to_gc, &pblk->inflight_reads);
> diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c
> index 88a0a7c407aa..b0e5e93a9d5f 100644
> --- a/drivers/lightnvm/pblk-sysfs.c
> +++ b/drivers/lightnvm/pblk-sysfs.c
> @@ -421,7 +421,7 @@ static ssize_t pblk_sysfs_get_padding_dist(struct pblk *pblk, char *page)
> return sz;
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> static ssize_t pblk_sysfs_stats_debug(struct pblk *pblk, char *page)
> {
> return snprintf(page, PAGE_SIZE,
> @@ -598,7 +598,7 @@ static struct attribute sys_padding_dist = {
> .mode = 0644,
> };
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> static struct attribute sys_stats_debug_attr = {
> .name = "stats",
> .mode = 0444,
> @@ -619,7 +619,7 @@ static struct attribute *pblk_attrs[] = {
> &sys_write_amp_mileage,
> &sys_write_amp_trip,
> &sys_padding_dist,
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> &sys_stats_debug_attr,
> #endif
> NULL,
> @@ -654,7 +654,7 @@ static ssize_t pblk_sysfs_show(struct kobject *kobj, struct attribute *attr,
> return pblk_sysfs_get_write_amp_trip(pblk, buf);
> else if (strcmp(attr->name, "padding_dist") == 0)
> return pblk_sysfs_get_padding_dist(pblk, buf);
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> else if (strcmp(attr->name, "stats") == 0)
> return pblk_sysfs_stats_debug(pblk, buf);
> #endif
> diff --git a/drivers/lightnvm/pblk-write.c b/drivers/lightnvm/pblk-write.c
> index f353e52941f5..5f44df999aed 100644
> --- a/drivers/lightnvm/pblk-write.c
> +++ b/drivers/lightnvm/pblk-write.c
> @@ -38,7 +38,7 @@ static unsigned long pblk_end_w_bio(struct pblk *pblk, struct nvm_rq *rqd,
> /* Release flags on context. Protect from writes */
> smp_store_release(&w_ctx->flags, flags);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_dec(&rwb->inflight_flush_point);
> #endif
> }
> @@ -51,7 +51,7 @@ static unsigned long pblk_end_w_bio(struct pblk *pblk, struct nvm_rq *rqd,
> pblk_bio_free_pages(pblk, rqd->bio, c_ctx->nr_valid,
> c_ctx->nr_padded);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(rqd->nr_ppas, &pblk->sync_writes);
> #endif
>
> @@ -78,7 +78,7 @@ static void pblk_complete_write(struct pblk *pblk, struct nvm_rq *rqd,
> unsigned long flags;
> unsigned long pos;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_sub(c_ctx->nr_valid, &pblk->inflight_writes);
> #endif
>
> @@ -196,7 +196,7 @@ static void pblk_queue_resubmit(struct pblk *pblk, struct pblk_c_ctx *c_ctx)
> list_add_tail(&r_ctx->list, &pblk->resubmit_list);
> spin_unlock(&pblk->resubmit_lock);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(c_ctx->nr_valid, &pblk->recov_writes);
> #endif
> }
> @@ -258,7 +258,7 @@ static void pblk_end_io_write(struct nvm_rq *rqd)
> pblk_end_w_fail(pblk, rqd);
> return;
> }
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> else
> WARN_ONCE(rqd->bio->bi_status, "pblk: corrupted write error\n");
> #endif
> @@ -356,7 +356,7 @@ static int pblk_calc_secs_to_sync(struct pblk *pblk, unsigned int secs_avail,
>
> secs_to_sync = pblk_calc_secs(pblk, secs_avail, secs_to_flush);
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> if ((!secs_to_sync && secs_to_flush)
> || (secs_to_sync < 0)
> || (secs_to_sync > secs_avail && !secs_to_flush)) {
> @@ -640,7 +640,7 @@ static int pblk_submit_write(struct pblk *pblk)
> if (pblk_submit_io_set(pblk, rqd))
> goto fail_free_bio;
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_long_add(secs_to_sync, &pblk->sub_writes);
> #endif
>
> diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
> index 34cc1d64a9d4..6d25c940f6ba 100644
> --- a/drivers/lightnvm/pblk.h
> +++ b/drivers/lightnvm/pblk.h
> @@ -193,7 +193,7 @@ struct pblk_rb {
> spinlock_t w_lock; /* Write lock */
> spinlock_t s_lock; /* Sync lock */
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> atomic_t inflight_flush_point; /* Not served REQ_FLUSH | REQ_FUA */
> #endif
> };
> @@ -639,7 +639,7 @@ struct pblk {
> u64 nr_flush_rst; /* Flushes reset value for pad dist.*/
> atomic64_t nr_flush; /* Number of flush/fua I/O */
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> /* Non-persistent debug counters, 4kb sector I/Os */
> atomic_long_t inflight_writes; /* Inflight writes (user and gc) */
> atomic_long_t padded_writes; /* Sectors padded due to flush/fua */
> @@ -1282,7 +1282,7 @@ static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs)
> return !(nr_secs % pblk->min_write_pgs);
> }
>
> -#ifdef CONFIG_NVM_DEBUG
> +#ifdef CONFIG_NVM_PBLK_DEBUG
> static inline void print_ppa(struct nvm_geo *geo, struct ppa_addr *p,
> char *msg, int error)
> {
> --
> 2.11.0
Are you sure you do not want any form of extra debug when you go around
pblk and use the BLK_DEV_ZONED path?
If so, I'm ok with moving it inside of pblk.
Reviewed-by: Javier González <javier@...xlabs.com>
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