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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/include/linux/timex.h
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@@ -62,6 +62,8 @@
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 #include <linux/types.h>
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 #include <linux/param.h>
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+unsigned long random_get_entropy_fallback(void);
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+
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 #include <asm/timex.h>
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 #ifndef random_get_entropy
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@@ -74,8 +76,14 @@
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  *
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  * By default we use get_cycles() for this purpose, but individual
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  * architectures may override this in their asm/timex.h header file.
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+ * If a given arch does not have get_cycles(), then we fallback to
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+ * using random_get_entropy_fallback().
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  */
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-#define random_get_entropy()	get_cycles()
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+#ifdef get_cycles
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+#define random_get_entropy()	((unsigned long)get_cycles())
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+#else
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+#define random_get_entropy()	random_get_entropy_fallback()
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+#endif
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 #endif
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 /*
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@@ -151,7 +159,9 @@
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 #define NTP_INTERVAL_FREQ  (HZ)
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 #define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ)
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-extern int do_adjtimex(struct timex *);
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+extern int do_adjtimex(struct __kernel_timex *);
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+extern int do_clock_adjtime(const clockid_t which_clock, struct __kernel_timex * ktx);
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+
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 extern void hardpps(const struct timespec64 *, const struct timespec64 *);
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 int read_current_timer(unsigned long *timer_val);