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| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-06-20 20:01:31 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-06-21 07:45:19 -0600 |
| commit | 65d7a37d4e3e226bb4a4ddf73a827d0dbc77f530 (patch) | |
| tree | 625eb6cbd9c42caa7f856a42922c617e7c3cf082 /drivers/block | |
| parent | 137380c0ec40710cbaf57c7878726c41a6da81cd (diff) | |
| download | linux-65d7a37d4e3e226bb4a4ddf73a827d0dbc77f530.tar.gz | |
aoe: make aoe_class a static const structure
Now that the driver core allows for struct class to be in read-only
memory, move the aoe_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Cc: Justin Sanders <justin@coraid.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230620180129.645646-6-gregkh@linuxfoundation.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/aoe/aoechr.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index 4c666f72203f1..a42c4bcc85ba3 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -49,7 +49,7 @@ static int emsgs_head_idx, emsgs_tail_idx; static struct completion emsgs_comp; static spinlock_t emsgs_lock; static int nblocked_emsgs_readers; -static struct class *aoe_class; + static struct aoe_chardev chardevs[] = { { MINOR_ERR, "err" }, { MINOR_DISCOVER, "discover" }, @@ -58,6 +58,16 @@ static struct aoe_chardev chardevs[] = { { MINOR_FLUSH, "flush" }, }; +static char *aoe_devnode(const struct device *dev, umode_t *mode) +{ + return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev)); +} + +static const struct class aoe_class = { + .name = "aoe", + .devnode = aoe_devnode, +}; + static int discover(void) { @@ -273,11 +283,6 @@ static const struct file_operations aoe_fops = { .llseek = noop_llseek, }; -static char *aoe_devnode(const struct device *dev, umode_t *mode) -{ - return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev)); -} - int __init aoechr_init(void) { @@ -290,15 +295,14 @@ aoechr_init(void) } init_completion(&emsgs_comp); spin_lock_init(&emsgs_lock); - aoe_class = class_create("aoe"); - if (IS_ERR(aoe_class)) { + n = class_register(&aoe_class); + if (n) { unregister_chrdev(AOE_MAJOR, "aoechr"); - return PTR_ERR(aoe_class); + return n; } - aoe_class->devnode = aoe_devnode; for (i = 0; i < ARRAY_SIZE(chardevs); ++i) - device_create(aoe_class, NULL, + device_create(&aoe_class, NULL, MKDEV(AOE_MAJOR, chardevs[i].minor), NULL, chardevs[i].name); @@ -311,8 +315,8 @@ aoechr_exit(void) int i; for (i = 0; i < ARRAY_SIZE(chardevs); ++i) - device_destroy(aoe_class, MKDEV(AOE_MAJOR, chardevs[i].minor)); - class_destroy(aoe_class); + device_destroy(&aoe_class, MKDEV(AOE_MAJOR, chardevs[i].minor)); + class_unregister(&aoe_class); unregister_chrdev(AOE_MAJOR, "aoechr"); } |