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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-04-24 22:37:54 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-05-07 17:06:19 +0300 |
| commit | e8824890249355656968d8846908a313fe231f11 (patch) | |
| tree | 1fcb79aee1fa6b82ee3810ce0b7ce0ee59d4ed23 /arch/x86/include/asm/delay.h | |
| parent | 3c40cdb0e93ec166f1fa4fee1eb62d45b5451515 (diff) | |
| download | linux-e8824890249355656968d8846908a313fe231f11.tar.xz | |
x86/delay: Preparatory code cleanup
The naming conventions in the delay code are confusing at best.
All delay variants use a loops argument and or variable which originates
from the original delay_loop() implementation. But all variants except
delay_loop() are based on TSC cycles.
Rename the argument to cycles and make it type u64 to avoid these weird
expansions to u64 in the functions.
Rename MWAITX_MAX_LOOPS to MWAITX_MAX_WAIT_CYCLES for the same reason
and fixup the comment of delay_mwaitx() as well.
Mark the delay_fn function pointer __ro_after_init and fixup the comment
for it.
No functional change and preparation for the upcoming TPAUSE based delay
variant.
[ Kyung Min Park: Added __init to use_tsc_delay() ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kyung Min Park <kyung.min.park@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1587757076-30337-2-git-send-email-kyung.min.park@intel.com
Diffstat (limited to 'arch/x86/include/asm/delay.h')
| -rw-r--r-- | arch/x86/include/asm/delay.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/delay.h b/arch/x86/include/asm/delay.h index de9e7841f953..9aa38de7bd72 100644 --- a/arch/x86/include/asm/delay.h +++ b/arch/x86/include/asm/delay.h @@ -3,8 +3,9 @@ #define _ASM_X86_DELAY_H #include <asm-generic/delay.h> +#include <linux/init.h> -void use_tsc_delay(void); +void __init use_tsc_delay(void); void use_mwaitx_delay(void); #endif /* _ASM_X86_DELAY_H */ |