Konstantin Demin
c3d09a3e94
imported from https://salsa.debian.org/kernel-team/linux.git commit 9d5cc9d9d6501d7f1dd7e194d4b245bd0b6c6a22 version 6.11.4-1
38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
From: Jinjie Ruan <ruanjinjie@huawei.com>
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Date: Tue, 3 Sep 2024 11:53:58 +0800
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Subject: [PATCH 36/54] printk: Use the BITS_PER_LONG macro
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.11/older/patches-6.11-rt7.tar.xz
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sizeof(unsigned long) * 8 is the number of bits in an unsigned long
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variable, replace it with BITS_PER_LONG macro to make it simpler.
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Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
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Reviewed-by: John Ogness <john.ogness@linutronix.de>
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Reviewed-by: Petr Mladek <pmladek@suse.com>
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Link: https://lore.kernel.org/r/20240903035358.308482-1-ruanjinjie@huawei.com
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Signed-off-by: Petr Mladek <pmladek@suse.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/printk/printk_ringbuffer.h | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/kernel/printk/printk_ringbuffer.h
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+++ b/kernel/printk/printk_ringbuffer.h
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@@ -4,6 +4,7 @@
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#define _KERNEL_PRINTK_RINGBUFFER_H
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#include <linux/atomic.h>
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+#include <linux/bits.h>
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#include <linux/dev_printk.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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@@ -122,7 +123,7 @@ enum desc_state {
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#define _DATA_SIZE(sz_bits) (1UL << (sz_bits))
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#define _DESCS_COUNT(ct_bits) (1U << (ct_bits))
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-#define DESC_SV_BITS (sizeof(unsigned long) * 8)
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+#define DESC_SV_BITS BITS_PER_LONG
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#define DESC_FLAGS_SHIFT (DESC_SV_BITS - 2)
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#define DESC_FLAGS_MASK (3UL << DESC_FLAGS_SHIFT)
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#define DESC_STATE(sv) (3UL & (sv >> DESC_FLAGS_SHIFT))
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