xref: /OK3568_Linux_fs/kernel/arch/x86/include/asm/timex.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_X86_TIMEX_H
3*4882a593Smuzhiyun #define _ASM_X86_TIMEX_H
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #include <asm/processor.h>
6*4882a593Smuzhiyun #include <asm/tsc.h>
7*4882a593Smuzhiyun 
random_get_entropy(void)8*4882a593Smuzhiyun static inline unsigned long random_get_entropy(void)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun 	if (!IS_ENABLED(CONFIG_X86_TSC) &&
11*4882a593Smuzhiyun 	    !cpu_feature_enabled(X86_FEATURE_TSC))
12*4882a593Smuzhiyun 		return random_get_entropy_fallback();
13*4882a593Smuzhiyun 	return rdtsc();
14*4882a593Smuzhiyun }
15*4882a593Smuzhiyun #define random_get_entropy random_get_entropy
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun /* Assume we use the PIT time source for the clock tick */
18*4882a593Smuzhiyun #define CLOCK_TICK_RATE		PIT_TICK_RATE
19*4882a593Smuzhiyun 
20*4882a593Smuzhiyun #define ARCH_HAS_READ_CURRENT_TIMER
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun #endif /* _ASM_X86_TIMEX_H */
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