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kernel: fix taslocks: Edf times are in µs(), not nanoseconds. d'oh.

--- a/sys/src/9/port/taslock.c

+++ b/sys/src/9/port/taslock.c

@@ -67,7 +67,7 @@

 				 */

 				print("inversion %#p pc %#p proc %lud held by pc %#p proc %lud\n",

 					l, pc, up ? up->pid : 0, l->pc, l->p ? l->p->pid : 0);

-				up->edf->d = todget(nil);	/* yield to process with lock */

+				up->edf->d = µs();	/* yield to process with lock */

 			}

 			if(i++ > 100000000){

 				i = 0;

-- 

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