[PATCH 4.9 178/264] ia64: define get_cycles macro for arch-override

Greg Kroah-Hartman
2022-06-23T17:09:48Z

From: "Jason A. Donenfeld" <Jason@zx2c4.com>

commit 57c0900b91d8891ab43f0e6b464d059fda51d102 upstream.

Itanium defines a get_cycles() function, but it does not do the usual
`#define get_cycles get_cycles` dance, making it impossible for generic
code to see if an arch-specific function was defined. While the
get_cycles() ifdef is not currently used, the following timekeeping
patch in this series will depend on the macro existing (or not existing)
when defining random_get_entropy().

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/ia64/include/asm/timex.h | 1 +
1 file changed, 1 insertion(+)

--- a/arch/ia64/include/asm/timex.h
+++ b/arch/ia64/include/asm/timex.h
@@ -38,6 +38,7 @@ get_cycles (void)
ret = ia64_getreg(_IA64_REG_AR_ITC);
return ret;
}
+#define get_cycles get_cycles

extern void ia64_cpu_local_tick (void);
extern unsigned long long ia64_native_sched_clock (void);