From: "Matias Bjørling" <m@bjorling.me>
To: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Javier González" <javier@cnexlabs.com>,
"Hans Holmberg" <hans.holmberg@cnexlabs.com>,
"Matias Bjørling" <m@bjorling.me>
Subject: [PATCH 18/25] lightnvm: set target over-provision on create ioctl
Date: Wed, 20 Dec 2017 18:21:58 +0100 [thread overview]
Message-ID: <20171220172205.26464-19-m@bjorling.me> (raw)
In-Reply-To: <20171220172205.26464-1-m@bjorling.me>
From: Javier González <javier@cnexlabs.com>
Allow to set the over-provision percentage on target creation. In case
that the value is not provided, fall back to the default value set by
the target.
In pblk, set the default OP to 11% of the total size of the device
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
drivers/lightnvm/core.c | 106 +++++++++++++++++++++++++++++++++---------
drivers/lightnvm/pblk-init.c | 5 +-
drivers/lightnvm/pblk.h | 2 +
include/linux/lightnvm.h | 6 +++
include/uapi/linux/lightnvm.h | 9 ++++
5 files changed, 104 insertions(+), 24 deletions(-)
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index d5f231c..dcc9e62 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -140,7 +140,8 @@ static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev, int clear)
}
static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
- int lun_begin, int lun_end)
+ u16 lun_begin, u16 lun_end,
+ u16 op)
{
struct nvm_tgt_dev *tgt_dev = NULL;
struct nvm_dev_map *dev_rmap = dev->rmap;
@@ -219,6 +220,7 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
tgt_dev->geo.nr_chnls = nr_chnls;
tgt_dev->geo.all_luns = nr_luns;
tgt_dev->geo.nr_luns = (lun_balanced) ? prev_nr_luns : -1;
+ tgt_dev->geo.op = op;
tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
tgt_dev->q = dev->q;
tgt_dev->map = dev_map;
@@ -266,9 +268,57 @@ static struct nvm_tgt_type *nvm_find_target_type(const char *name)
return tt;
}
+static int nvm_config_check_luns(struct nvm_geo *geo, int lun_begin,
+ int lun_end)
+{
+ if (lun_begin > lun_end || lun_end >= geo->all_luns) {
+ pr_err("nvm: lun out of bound (%u:%u > %u)\n",
+ lun_begin, lun_end, geo->all_luns - 1);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int __nvm_config_simple(struct nvm_dev *dev,
+ struct nvm_ioctl_create_simple *s)
+{
+ struct nvm_geo *geo = &dev->geo;
+
+ if (s->lun_begin == -1 && s->lun_end == -1) {
+ s->lun_begin = 0;
+ s->lun_end = geo->all_luns - 1;
+ }
+
+ return nvm_config_check_luns(geo, s->lun_begin, s->lun_end);
+}
+
+static int __nvm_config_extended(struct nvm_dev *dev,
+ struct nvm_ioctl_create_extended *e)
+{
+ struct nvm_geo *geo = &dev->geo;
+
+ if (e->lun_begin == 0xFFFF && e->lun_end == 0xFFFF) {
+ e->lun_begin = 0;
+ e->lun_end = dev->geo.all_luns - 1;
+ }
+
+ /* op not set falls into target's default */
+ if (e->op == 0xFFFF)
+ e->op = NVM_TARGET_DEFAULT_OP;
+
+ if (e->op < NVM_TARGET_MIN_OP ||
+ e->op > NVM_TARGET_MAX_OP) {
+ pr_err("nvm: invalid over provisioning value\n");
+ return -EINVAL;
+ }
+
+ return nvm_config_check_luns(geo, e->lun_begin, e->lun_end);
+}
+
static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
{
- struct nvm_ioctl_create_simple *s = &create->conf.s;
+ struct nvm_ioctl_create_extended e;
struct request_queue *tqueue;
struct gendisk *tdisk;
struct nvm_tgt_type *tt;
@@ -277,6 +327,28 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
void *targetdata;
int ret;
+ switch (create->conf.type) {
+ case NVM_CONFIG_TYPE_SIMPLE:
+ ret = __nvm_config_simple(dev, &create->conf.s);
+ if (ret)
+ return ret;
+
+ e.lun_begin = create->conf.s.lun_begin;
+ e.lun_end = create->conf.s.lun_end;
+ e.op = NVM_TARGET_DEFAULT_OP;
+ break;
+ case NVM_CONFIG_TYPE_EXTENDED:
+ ret = __nvm_config_extended(dev, &create->conf.e);
+ if (ret)
+ return ret;
+
+ e = create->conf.e;
+ break;
+ default:
+ pr_err("nvm: config type not valid\n");
+ return -EINVAL;
+ }
+
tt = nvm_find_target_type(create->tgttype);
if (!tt) {
pr_err("nvm: target type %s not found\n", create->tgttype);
@@ -289,7 +361,7 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
return -EINVAL;
}
- ret = nvm_reserve_luns(dev, s->lun_begin, s->lun_end);
+ ret = nvm_reserve_luns(dev, e.lun_begin, e.lun_end);
if (ret)
return ret;
@@ -299,7 +371,7 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
goto err_reserve;
}
- tgt_dev = nvm_create_tgt_dev(dev, s->lun_begin, s->lun_end);
+ tgt_dev = nvm_create_tgt_dev(dev, e.lun_begin, e.lun_end, e.op);
if (!tgt_dev) {
pr_err("nvm: could not create target device\n");
ret = -ENOMEM;
@@ -369,7 +441,7 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
err_t:
kfree(t);
err_reserve:
- nvm_release_luns_err(dev, s->lun_begin, s->lun_end);
+ nvm_release_luns_err(dev, e.lun_begin, e.lun_end);
return ret;
}
@@ -949,7 +1021,6 @@ EXPORT_SYMBOL(nvm_unregister);
static int __nvm_configure_create(struct nvm_ioctl_create *create)
{
struct nvm_dev *dev;
- struct nvm_ioctl_create_simple *s;
down_write(&nvm_lock);
dev = nvm_find_nvm_dev(create->dev);
@@ -960,23 +1031,6 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create)
return -EINVAL;
}
- if (create->conf.type != NVM_CONFIG_TYPE_SIMPLE) {
- pr_err("nvm: config type not valid\n");
- return -EINVAL;
- }
- s = &create->conf.s;
-
- if (s->lun_begin == -1 && s->lun_end == -1) {
- s->lun_begin = 0;
- s->lun_end = dev->geo.all_luns - 1;
- }
-
- if (s->lun_begin > s->lun_end || s->lun_end >= dev->geo.all_luns) {
- pr_err("nvm: lun out of bound (%u:%u > %u)\n",
- s->lun_begin, s->lun_end, dev->geo.all_luns - 1);
- return -EINVAL;
- }
-
return nvm_create_tgt(dev, create);
}
@@ -1076,6 +1130,12 @@ static long nvm_ioctl_dev_create(struct file *file, void __user *arg)
if (copy_from_user(&create, arg, sizeof(struct nvm_ioctl_create)))
return -EFAULT;
+ if (create.conf.type == NVM_CONFIG_TYPE_EXTENDED &&
+ create.conf.e.rsv != 0) {
+ pr_err("nvm: reserved config field in use\n");
+ return -EINVAL;
+ }
+
create.dev[DISK_NAME_LEN - 1] = '\0';
create.tgttype[NVM_TTYPE_NAME_MAX - 1] = '\0';
create.tgtname[DISK_NAME_LEN - 1] = '\0';
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index e939f0a..30ea592 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -585,7 +585,10 @@ static void pblk_set_provision(struct pblk *pblk, long nr_free_blks)
sector_t provisioned;
int sec_meta, blk_meta;
- pblk->op = 20;
+ if (geo->op == NVM_TARGET_DEFAULT_OP)
+ pblk->op = PBLK_DEFAULT_OP;
+ else
+ pblk->op = geo->op;
provisioned = nr_free_blks;
provisioned *= (100 - pblk->op);
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 9a21d36..430d076 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -54,6 +54,8 @@
/* Static pool sizes */
#define PBLK_GEN_WS_POOL_SIZE (2)
+#define PBLK_DEFAULT_OP (11)
+
enum {
PBLK_READ = READ,
PBLK_WRITE = WRITE,/* Write from write buffer */
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index b14ca84..b6df451 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -214,6 +214,10 @@ struct nvm_target {
#define ADDR_EMPTY (~0ULL)
+#define NVM_TARGET_DEFAULT_OP (101)
+#define NVM_TARGET_MIN_OP (3)
+#define NVM_TARGET_MAX_OP (80)
+
#define NVM_VERSION_MAJOR 1
#define NVM_VERSION_MINOR 0
#define NVM_VERSION_PATCH 0
@@ -287,6 +291,8 @@ struct nvm_geo {
int max_rq_size;
+ int op;
+
struct nvm_addr_format ppaf;
/* Legacy 1.2 specific geometry */
diff --git a/include/uapi/linux/lightnvm.h b/include/uapi/linux/lightnvm.h
index c8aec4b..c937160 100644
--- a/include/uapi/linux/lightnvm.h
+++ b/include/uapi/linux/lightnvm.h
@@ -74,14 +74,23 @@ struct nvm_ioctl_create_simple {
__u32 lun_end;
};
+struct nvm_ioctl_create_extended {
+ __u16 lun_begin;
+ __u16 lun_end;
+ __u16 op;
+ __u16 rsv;
+};
+
enum {
NVM_CONFIG_TYPE_SIMPLE = 0,
+ NVM_CONFIG_TYPE_EXTENDED = 1,
};
struct nvm_ioctl_create_conf {
__u32 type;
union {
struct nvm_ioctl_create_simple s;
+ struct nvm_ioctl_create_extended e;
};
};
--
2.9.3
next prev parent reply other threads:[~2017-12-20 17:22 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-20 17:21 [PATCH 00/25] Updates to lightnvm and pblk Matias Bjørling
2017-12-20 17:21 ` [PATCH 01/25] null_blk: remove lightnvm support Matias Bjørling
2017-12-20 17:21 ` [PATCH 02/25] lightnvm: remove rrpc Matias Bjørling
2017-12-20 17:21 ` [PATCH 03/25] lightnvm: use internal pblk methods Matias Bjørling
2017-12-20 17:21 ` [PATCH 04/25] lightnvm: remove hybrid ocssd 1.2 support Matias Bjørling
2017-12-20 17:21 ` [PATCH 05/25] lightnvm: remove unnecessary field from nvm_rq Matias Bjørling
2017-12-20 17:21 ` [PATCH 06/25] lightnvm: remove lower page tables Matias Bjørling
2017-12-20 17:21 ` [PATCH 07/25] lightnvm: make geometry structures 2.0 ready Matias Bjørling
2017-12-20 17:21 ` [PATCH 08/25] lightnvm: refactor target type lookup Matias Bjørling
2017-12-20 17:21 ` [PATCH 09/25] lightnvm: guarantee target unique name across devs Matias Bjørling
2017-12-20 17:21 ` [PATCH 10/25] lightnvm: pblk: compress and reorder helper functions Matias Bjørling
2017-12-20 17:21 ` [PATCH 11/25] lightnvm: pblk: remove pblk_for_each_lun helper Matias Bjørling
2017-12-20 17:21 ` [PATCH 12/25] lightnvm: pblk: refactor emeta consistency check Matias Bjørling
2017-12-20 17:21 ` [PATCH 13/25] lightnvm: pblk: rename sync_point to flush_point Matias Bjørling
2017-12-20 17:21 ` [PATCH 14/25] lightnvm: pblk: clear flush point on completed writes Matias Bjørling
2017-12-28 13:19 ` [PATCH v2] " Hans Holmberg
2017-12-20 17:21 ` [PATCH 15/25] lightnvm: pblk: prevent premature sync point resets Matias Bjørling
2017-12-20 17:21 ` [PATCH 16/25] lightnvm: pblk: remove pblk_gc_stop Matias Bjørling
2017-12-20 17:21 ` [PATCH 17/25] lightnvm: pblk: use exact free block counter in RL Matias Bjørling
2017-12-20 17:21 ` Matias Bjørling [this message]
2017-12-20 17:21 ` [PATCH 19/25] lightnvm: pblk: ignore high ecc errors on recovery Matias Bjørling
2017-12-20 17:22 ` [PATCH 20/25] lightnvm: pblk: do not log recovery read errors Matias Bjørling
2017-12-20 17:22 ` [PATCH 21/25] lightnvm: pblk: ensure kthread alloc. before kicking it Matias Bjørling
2017-12-20 17:22 ` [PATCH 22/25] lightnvm: pblk: free write buffer on init failure Matias Bjørling
2017-12-20 17:22 ` [PATCH 23/25] lightnvm: pblk: print instance name on instance info Matias Bjørling
2017-12-20 17:22 ` [PATCH 24/25] lightnvm: pblk: add iostat support Matias Bjørling
2017-12-20 17:22 ` [PATCH 25/25] lightnvm: pblk: refactor pblk_ppa_comp function Matias Bjørling
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