[zen-kernel-zen-kernel:5.5/muqss 2/22] kernel/time/hrtimer.c:2217:14: error: redefinition of 'schedule_msec_hrtimeout'

Sunday, 2 February 2020

tree:   https://github.com/zen-kernel/zen-kernel 5.5/muqss
head:   bf569053d0fe08b3615793a0105afff3d28f3676
commit: 9c34e9485aa8a6a771eeacfc9abf31008d1ce8c2 [2/22] Create highres timeout variants of
schedule_timeout functions.
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-3) 7.5.0
reproduce:
        git checkout 9c34e9485aa8a6a771eeacfc9abf31008d1ce8c2
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp(a)intel.com&gt;

Note: the zen-kernel-zen-kernel/5.5/muqss HEAD bf569053d0fe08b3615793a0105afff3d28f3676
builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

...
> kernel/time/hrtimer.c:2217:14: error: redefinition of
'schedule_msec_hrtimeout'     long __sched schedule_msec_hrtimeout(long
timeout)
                 ^~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/ratelimit.h:6:0,
                    from include/linux/device.h:25,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from kernel/time/hrtimer.c:25:
   include/linux/sched.h:233:20: note: previous definition of
'schedule_msec_hrtimeout' was here
    static inline long schedule_msec_hrtimeout(long timeout)
                       ^~~~~~~~~~~~~~~~~~~~~~~
...
> kernel/time/hrtimer.c:2261:14: error: redefinition of
'schedule_min_hrtimeout'     long __sched schedule_min_hrtimeout(void)
                 ^~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/ratelimit.h:6:0,
                    from include/linux/device.h:25,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from kernel/time/hrtimer.c:25:
   include/linux/sched.h:238:20: note: previous definition of
'schedule_min_hrtimeout' was here
    static inline long schedule_min_hrtimeout(void)
                       ^~~~~~~~~~~~~~~~~~~~~~
...
> kernel/time/hrtimer.c:2268:14: error: redefinition of
'schedule_msec_hrtimeout_interruptible'     long __sched
schedule_msec_hrtimeout_interruptible(long timeout)
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/ratelimit.h:6:0,
                    from include/linux/device.h:25,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from kernel/time/hrtimer.c:25:
   include/linux/sched.h:243:20: note: previous definition of
'schedule_msec_hrtimeout_interruptible' was here
    static inline long schedule_msec_hrtimeout_interruptible(long timeout)
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...
> kernel/time/hrtimer.c:2275:14: error: redefinition of
'schedule_msec_hrtimeout_uninterruptible'     long __sched
schedule_msec_hrtimeout_uninterruptible(long timeout)
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/ratelimit.h:6:0,
                    from include/linux/device.h:25,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from kernel/time/hrtimer.c:25:
   include/linux/sched.h:248:20: note: previous definition of
'schedule_msec_hrtimeout_uninterruptible' was here
    static inline long schedule_msec_hrtimeout_uninterruptible(long timeout)
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/schedule_msec_hrtimeout +2217 kernel/time/hrtimer.c

  2212	
  2213	/*
  2214	 * As per schedule_hrtimeout but taskes a millisecond value and returns how
  2215	 * many milliseconds are left.
  2216	 */
...
 2217	long __sched schedule_msec_hrtimeout(long timeout)  
2218	{
  2219		struct hrtimer_sleeper t;
  2220		int delta, secs, jiffs;
  2221		ktime_t expires;
  2222	
  2223		if (!timeout) {
  2224			__set_current_state(TASK_RUNNING);
  2225			return 0;
  2226		}
  2227	
  2228		jiffs = msecs_to_jiffies(timeout);
  2229		/*
  2230		 * If regular timer resolution is adequate or hrtimer resolution is not
  2231		 * (yet) better than Hz, as would occur during startup, use regular
  2232		 * timers.
  2233		 */
  2234		if (jiffs > 4 || hrtimer_resolution >= NSEC_PER_SEC / HZ)
  2235			return schedule_timeout(jiffs);
  2236	
  2237		secs = timeout / 1000;
  2238		delta = (timeout % 1000) * NSEC_PER_MSEC;
  2239		expires = ktime_set(secs, delta);
  2240	
  2241		hrtimer_init_sleeper_on_stack(&t, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
  2242		hrtimer_set_expires_range_ns(&t.timer, expires, delta);
  2243	
  2244		hrtimer_sleeper_start_expires(&t, HRTIMER_MODE_REL);
  2245	
  2246		if (likely(t.task))
  2247			schedule();
  2248	
  2249		hrtimer_cancel(&t.timer);
  2250		destroy_hrtimer_on_stack(&t.timer);
  2251	
  2252		__set_current_state(TASK_RUNNING);
  2253	
  2254		expires = hrtimer_expires_remaining(&t.timer);
  2255		timeout = ktime_to_ms(expires);
  2256		return timeout < 0 ? 0 : timeout;
  2257	}
  2258	
  2259	EXPORT_SYMBOL(schedule_msec_hrtimeout);
  2260	
...
 2261	long __sched schedule_min_hrtimeout(void)   2262	{
  2263		return schedule_msec_hrtimeout(1);
  2264	}
  2265	
  2266	EXPORT_SYMBOL(schedule_min_hrtimeout);
  2267	
...
 2268	long __sched schedule_msec_hrtimeout_interruptible(long timeout)
  2269	{
  2270		__set_current_state(TASK_INTERRUPTIBLE);
  2271		return schedule_msec_hrtimeout(timeout);
  2272	}
  2273	EXPORT_SYMBOL(schedule_msec_hrtimeout_interruptible);
  2274	
...
 2275	long __sched schedule_msec_hrtimeout_uninterruptible(long
timeout) 
---
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