arm64: kernel: compiling issue, need delete read_current_timer() (6916b14e) · Commits · 戴 / test

Under arm64, we will calibrate the delay loop statically using a known timer frequency, so delete read_current_timer(), or it will cause compiling issue with allmodconfig. The related error: ERROR: "read_current_timer" [lib/rbtree_test.ko] undefined! ERROR: "read_current_timer" [lib/interval_tree_test.ko] undefined! ERROR: "read_current_timer" [fs/ext4/ext4.ko] undefined! ERROR: "read_current_timer" [crypto/tcrypt.ko] undefined! Signed-off-by:

Chen Gang <gang.chen@asianux.com> Acked-by:

Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:

Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/asm/timex.h

+3 −3

Original line number	Diff line number	Diff line
		@@ -16,14 +16,14 @@
		#ifndef __ASM_TIMEX_H
		#define __ASM_TIMEX_H

		#include <asm/arch_timer.h>

		/*
		* Use the current timer as a cycle counter since this is what we use for
		* the delay loop.
		*/
		#define get_cycles() ({ cycles_t c; read_current_timer(&c); c; })
		#define get_cycles() arch_counter_get_cntvct()

		#include <asm-generic/timex.h>

		#define ARCH_HAS_READ_CURRENT_TIMER

		#endif

arch/arm64/kernel/time.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -68,12 +68,6 @@ unsigned long long notrace sched_clock(void)
		return arch_timer_read_counter() * sched_clock_mult;
		}

		int read_current_timer(unsigned long *timer_value)
		{
		*timer_value = arch_timer_read_counter();
		return 0;
		}

		void __init time_init(void)
		{
		u32 arch_timer_rate;

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