clocksource: Use a plain u64 instead of cycle_t

There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@@
-typedef u64 cycle_t;

@fix@
typedef cycle_t;
@@
-cycle_t
+u64

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>

10 files changed, 49 insertions, 52 deletions

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 150242ccfcd2..665985b0a89a 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -170,7 +170,7 @@ void clocksource_mark_unstable(struct clocksource *cs)
 static void clocksource_watchdog(unsigned long data)
 {
 	struct clocksource *cs;
-	cycle_t csnow, wdnow, cslast, wdlast, delta;
+	u64 csnow, wdnow, cslast, wdlast, delta;
 	int64_t wd_nsec, cs_nsec;
 	int next_cpu, reset_pending;
 
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 555e21f7b966..a4a0e478e44d 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -59,9 +59,9 @@
 #define JIFFIES_SHIFT	8
 #endif
 
-static cycle_t jiffies_read(struct clocksource *cs)
+static u64 jiffies_read(struct clocksource *cs)
 {
-	return (cycle_t) jiffies;
+	return (u64) jiffies;
 }
 
 static struct clocksource clocksource_jiffies = {
diff --git a/kernel/time/timecounter.c b/kernel/time/timecounter.c
index 4687b3104bae..8afd78932bdf 100644
--- a/kernel/time/timecounter.c
+++ b/kernel/time/timecounter.c
@@ -43,7 +43,7 @@ EXPORT_SYMBOL_GPL(timecounter_init);
  */
 static u64 timecounter_read_delta(struct timecounter *tc)
 {
-	cycle_t cycle_now, cycle_delta;
+	u64 cycle_now, cycle_delta;
 	u64 ns_offset;
 
 	/* read cycle counter: */
@@ -80,7 +80,7 @@ EXPORT_SYMBOL_GPL(timecounter_read);
  * time previous to the time stored in the cycle counter.
  */
 static u64 cc_cyc2ns_backwards(const struct cyclecounter *cc,
-			       cycle_t cycles, u64 mask, u64 frac)
+			       u64 cycles, u64 mask, u64 frac)
 {
 	u64 ns = (u64) cycles;
 
@@ -90,7 +90,7 @@ static u64 cc_cyc2ns_backwards(const struct cyclecounter *cc,
 }
 
 u64 timecounter_cyc2time(struct timecounter *tc,
-			 cycle_t cycle_tstamp)
+			 u64 cycle_tstamp)
 {
 	u64 delta = (cycle_tstamp - tc->cycle_last) & tc->cc->mask;
 	u64 nsec = tc->nsec, frac = tc->frac;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index da233cdf89b0..f4152a69277f 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -119,10 +119,10 @@ static inline void tk_update_sleep_time(struct timekeeper *tk, ktime_t delta)
 #ifdef CONFIG_DEBUG_TIMEKEEPING
 #define WARNING_FREQ (HZ*300) /* 5 minute rate-limiting */
 
-static void timekeeping_check_update(struct timekeeper *tk, cycle_t offset)
+static void timekeeping_check_update(struct timekeeper *tk, u64 offset)
 {
 
-	cycle_t max_cycles = tk->tkr_mono.clock->max_cycles;
+	u64 max_cycles = tk->tkr_mono.clock->max_cycles;
 	const char *name = tk->tkr_mono.clock->name;
 
 	if (offset > max_cycles) {
@@ -158,10 +158,10 @@ static void timekeeping_check_update(struct timekeeper *tk, cycle_t offset)
 	}
 }
 
-static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
+static inline u64 timekeeping_get_delta(struct tk_read_base *tkr)
 {
 	struct timekeeper *tk = &tk_core.timekeeper;
-	cycle_t now, last, mask, max, delta;
+	u64 now, last, mask, max, delta;
 	unsigned int seq;
 
 	/*
@@ -199,12 +199,12 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
 	return delta;
 }
 #else
-static inline void timekeeping_check_update(struct timekeeper *tk, cycle_t offset)
+static inline void timekeeping_check_update(struct timekeeper *tk, u64 offset)
 {
 }
-static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
+static inline u64 timekeeping_get_delta(struct tk_read_base *tkr)
 {
-	cycle_t cycle_now, delta;
+	u64 cycle_now, delta;
 
 	/* read clocksource */
 	cycle_now = tkr->read(tkr->clock);
@@ -229,7 +229,7 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
  */
 static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock)
 {
-	cycle_t interval;
+	u64 interval;
 	u64 tmp, ntpinterval;
 	struct clocksource *old_clock;
 
@@ -254,7 +254,7 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock)
 	if (tmp == 0)
 		tmp = 1;
 
-	interval = (cycle_t) tmp;
+	interval = (u64) tmp;
 	tk->cycle_interval = interval;
 
 	/* Go back from cycles -> shifted ns */
@@ -298,8 +298,7 @@ u32 (*arch_gettimeoffset)(void) = default_arch_gettimeoffset;
 static inline u32 arch_gettimeoffset(void) { return 0; }
 #endif
 
-static inline u64 timekeeping_delta_to_ns(struct tk_read_base *tkr,
-					  cycle_t delta)
+static inline u64 timekeeping_delta_to_ns(struct tk_read_base *tkr, u64 delta)
 {
 	u64 nsec;
 
@@ -312,16 +311,15 @@ static inline u64 timekeeping_delta_to_ns(struct tk_read_base *tkr,
 
 static inline u64 timekeeping_get_ns(struct tk_read_base *tkr)
 {
-	cycle_t delta;
+	u64 delta;
 
 	delta = timekeeping_get_delta(tkr);
 	return timekeeping_delta_to_ns(tkr, delta);
 }
 
-static inline u64 timekeeping_cycles_to_ns(struct tk_read_base *tkr,
-					   cycle_t cycles)
+static inline u64 timekeeping_cycles_to_ns(struct tk_read_base *tkr, u64 cycles)
 {
-	cycle_t delta;
+	u64 delta;
 
 	/* calculate the delta since the last update_wall_time */
 	delta = clocksource_delta(cycles, tkr->cycle_last, tkr->mask);
@@ -454,9 +452,9 @@ u64 notrace ktime_get_boot_fast_ns(void)
 EXPORT_SYMBOL_GPL(ktime_get_boot_fast_ns);
 
 /* Suspend-time cycles value for halted fast timekeeper. */
-static cycle_t cycles_at_suspend;
+static u64 cycles_at_suspend;
 
-static cycle_t dummy_clock_read(struct clocksource *cs)
+static u64 dummy_clock_read(struct clocksource *cs)
 {
 	return cycles_at_suspend;
 }
@@ -650,7 +648,7 @@ static void timekeeping_update(struct timekeeper *tk, unsigned int action)
 static void timekeeping_forward_now(struct timekeeper *tk)
 {
 	struct clocksource *clock = tk->tkr_mono.clock;
-	cycle_t cycle_now, delta;
+	u64 cycle_now, delta;
 	u64 nsec;
 
 	cycle_now = tk->tkr_mono.read(clock);
@@ -923,7 +921,7 @@ void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot)
 	ktime_t base_real;
 	u64 nsec_raw;
 	u64 nsec_real;
-	cycle_t now;
+	u64 now;
 
 	WARN_ON_ONCE(timekeeping_suspended);
 
@@ -982,8 +980,8 @@ static int scale64_check_overflow(u64 mult, u64 div, u64 *base)
  * interval is partial_history_cycles.
  */
 static int adjust_historical_crosststamp(struct system_time_snapshot *history,
-					 cycle_t partial_history_cycles,
-					 cycle_t total_history_cycles,
+					 u64 partial_history_cycles,
+					 u64 total_history_cycles,
 					 bool discontinuity,
 					 struct system_device_crosststamp *ts)
 {
@@ -1047,7 +1045,7 @@ static int adjust_historical_crosststamp(struct system_time_snapshot *history,
 /*
  * cycle_between - true if test occurs chronologically between before and after
  */
-static bool cycle_between(cycle_t before, cycle_t test, cycle_t after)
+static bool cycle_between(u64 before, u64 test, u64 after)
 {
 	if (test > before && test < after)
 		return true;
@@ -1077,7 +1075,7 @@ int get_device_system_crosststamp(int (*get_time_fn)
 {
 	struct system_counterval_t system_counterval;
 	struct timekeeper *tk = &tk_core.timekeeper;
-	cycle_t cycles, now, interval_start;
+	u64 cycles, now, interval_start;
 	unsigned int clock_was_set_seq = 0;
 	ktime_t base_real, base_raw;
 	u64 nsec_real, nsec_raw;
@@ -1138,7 +1136,7 @@ int get_device_system_crosststamp(int (*get_time_fn)
 	 * current interval
 	 */
 	if (do_interp) {
-		cycle_t partial_history_cycles, total_history_cycles;
+		u64 partial_history_cycles, total_history_cycles;
 		bool discontinuity;
 
 		/*
@@ -1644,7 +1642,7 @@ void timekeeping_resume(void)
 	struct clocksource *clock = tk->tkr_mono.clock;
 	unsigned long flags;
 	struct timespec64 ts_new, ts_delta;
-	cycle_t cycle_now;
+	u64 cycle_now;
 
 	sleeptime_injected = false;
 	read_persistent_clock64(&ts_new);
@@ -2010,11 +2008,10 @@ static inline unsigned int accumulate_nsecs_to_secs(struct timekeeper *tk)
  *
  * Returns the unconsumed cycles.
  */
-static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
-						u32 shift,
-						unsigned int *clock_set)
+static u64 logarithmic_accumulation(struct timekeeper *tk, u64 offset,
+				    u32 shift, unsigned int *clock_set)
 {
-	cycle_t interval = tk->cycle_interval << shift;
+	u64 interval = tk->cycle_interval << shift;
 	u64 raw_nsecs;
 
 	/* If the offset is smaller than a shifted interval, do nothing */
@@ -2055,7 +2052,7 @@ void update_wall_time(void)
 {
 	struct timekeeper *real_tk = &tk_core.timekeeper;
 	struct timekeeper *tk = &shadow_timekeeper;
-	cycle_t offset;
+	u64 offset;
 	int shift = 0, maxshift;
 	unsigned int clock_set = 0;
 	unsigned long flags;
diff --git a/kernel/time/timekeeping_internal.h b/kernel/time/timekeeping_internal.h
index 5be76270ec4a..9a18f121f399 100644
--- a/kernel/time/timekeeping_internal.h
+++ b/kernel/time/timekeeping_internal.h
@@ -13,9 +13,9 @@ extern void tk_debug_account_sleep_time(struct timespec64 *t);
 #endif
 
 #ifdef CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE
-static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask)
+static inline u64 clocksource_delta(u64 now, u64 last, u64 mask)
 {
-	cycle_t ret = (now - last) & mask;
+	u64 ret = (now - last) & mask;
 
 	/*
 	 * Prevent time going backwards by checking the MSB of mask in
@@ -24,7 +24,7 @@ static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask)
 	return ret & ~(mask >> 1) ? 0 : ret;
 }
 #else
-static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask)
+static inline u64 clocksource_delta(u64 now, u64 last, u64 mask)
 {
 	return (now - last) & mask;
 }
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 1f0f547c54da..eb230f06ba41 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2847,7 +2847,7 @@ static void ftrace_shutdown_sysctl(void)
 	}
 }
 
-static cycle_t		ftrace_update_time;
+static u64		ftrace_update_time;
 unsigned long		ftrace_update_tot_cnt;
 
 static inline int ops_traces_mod(struct ftrace_ops *ops)
@@ -2894,7 +2894,7 @@ static int ftrace_update_code(struct module *mod, struct ftrace_page *new_pgs)
 {
 	struct ftrace_page *pg;
 	struct dyn_ftrace *p;
-	cycle_t start, stop;
+	u64 start, stop;
 	unsigned long update_cnt = 0;
 	unsigned long rec_flags = 0;
 	int i;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 66f829c47bec..d7449783987a 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -236,7 +236,7 @@ static int __init set_tracepoint_printk(char *str)
 }
 __setup("tp_printk", set_tracepoint_printk);
 
-unsigned long long ns2usecs(cycle_t nsec)
+unsigned long long ns2usecs(u64 nsec)
 {
 	nsec += 500;
 	do_div(nsec, 1000);
@@ -573,7 +573,7 @@ int trace_pid_write(struct trace_pid_list *filtered_pids,
 	return read;
 }
 
-static cycle_t buffer_ftrace_now(struct trace_buffer *buf, int cpu)
+static u64 buffer_ftrace_now(struct trace_buffer *buf, int cpu)
 {
 	u64 ts;
 
@@ -587,7 +587,7 @@ static cycle_t buffer_ftrace_now(struct trace_buffer *buf, int cpu)
 	return ts;
 }
 
-cycle_t ftrace_now(int cpu)
+u64 ftrace_now(int cpu)
 {
 	return buffer_ftrace_now(&global_trace.trace_buffer, cpu);
 }
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index c2234494f40c..1ea51ab53edf 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -159,7 +159,7 @@ struct trace_array_cpu {
 	unsigned long		policy;
 	unsigned long		rt_priority;
 	unsigned long		skipped_entries;
-	cycle_t			preempt_timestamp;
+	u64			preempt_timestamp;
 	pid_t			pid;
 	kuid_t			uid;
 	char			comm[TASK_COMM_LEN];
@@ -177,7 +177,7 @@ struct trace_buffer {
 	struct trace_array		*tr;
 	struct ring_buffer		*buffer;
 	struct trace_array_cpu __percpu	*data;
-	cycle_t				time_start;
+	u64				time_start;
 	int				cpu;
 };
 
@@ -689,7 +689,7 @@ static inline void __trace_stack(struct trace_array *tr, unsigned long flags,
 }
 #endif /* CONFIG_STACKTRACE */
 
-extern cycle_t ftrace_now(int cpu);
+extern u64 ftrace_now(int cpu);
 
 extern void trace_find_cmdline(int pid, char comm[]);
 extern void trace_event_follow_fork(struct trace_array *tr, bool enable);
@@ -736,7 +736,7 @@ extern int trace_selftest_startup_branch(struct tracer *trace,
 #endif /* CONFIG_FTRACE_STARTUP_TEST */
 
 extern void *head_page(struct trace_array_cpu *data);
-extern unsigned long long ns2usecs(cycle_t nsec);
+extern unsigned long long ns2usecs(u64 nsec);
 extern int
 trace_vbprintk(unsigned long ip, const char *fmt, va_list args);
 extern int
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 86654d7e1afe..7758bc0617cb 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -298,7 +298,7 @@ static void irqsoff_print_header(struct seq_file *s)
 /*
  * Should this new latency be reported/recorded?
  */
-static bool report_latency(struct trace_array *tr, cycle_t delta)
+static bool report_latency(struct trace_array *tr, u64 delta)
 {
 	if (tracing_thresh) {
 		if (delta < tracing_thresh)
@@ -316,7 +316,7 @@ check_critical_timing(struct trace_array *tr,
 		      unsigned long parent_ip,
 		      int cpu)
 {
-	cycle_t T0, T1, delta;
+	u64 T0, T1, delta;
 	unsigned long flags;
 	int pc;
 
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 5d0bb025bb21..ddec53b67646 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -358,7 +358,7 @@ static void wakeup_print_header(struct seq_file *s)
 /*
  * Should this new latency be reported/recorded?
  */
-static bool report_latency(struct trace_array *tr, cycle_t delta)
+static bool report_latency(struct trace_array *tr, u64 delta)
 {
 	if (tracing_thresh) {
 		if (delta < tracing_thresh)
@@ -440,7 +440,7 @@ probe_wakeup_sched_switch(void *ignore, bool preempt,
 			  struct task_struct *prev, struct task_struct *next)
 {
 	struct trace_array_cpu *data;
-	cycle_t T0, T1, delta;
+	u64 T0, T1, delta;
 	unsigned long flags;
 	long disabled;
 	int cpu;