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printk: Use the BITS_PER_LONG macro

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sizeof(unsigned long) * 8 is the number of bits in an unsigned long
variable, replace it with BITS_PER_LONG macro to make it simpler.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240903035358.308482-1-ruanjinjie@huawei.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Jinjie Ruan 2024-09-03 11:53:58 +08:00 committed by Petr Mladek
parent 59cd94ef80
commit 85a147a986
1 changed files with 2 additions and 1 deletions
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3
kernel/printk/printk_ringbuffer.h
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@ -4,6 +4,7 @@
#define _KERNEL_PRINTK_RINGBUFFER_H
#include <linux/atomic.h>
#include <linux/bits.h>
#include <linux/dev_printk.h>
#include <linux/stddef.h>
#include <linux/types.h>
@ -122,7 +123,7 @@ enum desc_state {
#define _DATA_SIZE(sz_bits) (1UL << (sz_bits))
#define _DESCS_COUNT(ct_bits) (1U << (ct_bits))
#define DESC_SV_BITS (sizeof(unsigned long) * 8)
#define DESC_SV_BITS BITS_PER_LONG
#define DESC_FLAGS_SHIFT (DESC_SV_BITS - 2)
#define DESC_FLAGS_MASK (3UL << DESC_FLAGS_SHIFT)
#define DESC_STATE(sv) (3UL & (sv >> DESC_FLAGS_SHIFT))