ARM: make sched_clock just call a function pointer
This converts sched_clock to simply a call to a function pointer in order to allow overriding it. This will allow for use with 64-bit counters where overflow handling is not needed. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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c115739da8
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7e48c0b9d9
arch/arm
@ -11,4 +11,6 @@
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extern void sched_clock_postinit(void);
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extern void setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate);
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extern unsigned long long (*sched_clock_func)(void);
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#endif
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@ -165,12 +165,19 @@ void __init setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate)
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pr_debug("Registered %pF as sched_clock source\n", read);
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}
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unsigned long long notrace sched_clock(void)
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static unsigned long long notrace sched_clock_32(void)
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{
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u32 cyc = read_sched_clock();
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return cyc_to_sched_clock(cyc, sched_clock_mask);
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}
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unsigned long long __read_mostly (*sched_clock_func)(void) = sched_clock_32;
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unsigned long long notrace sched_clock(void)
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{
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return sched_clock_func();
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}
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void __init sched_clock_postinit(void)
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{
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/*
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