Commit c6890f36 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Tejun Heo
Browse files

workqueue: avoid unguarded 64-bit division 



The printk() requires a division that is not allowed on 32-bit architectures:

x86_64-linux-ld: lib/test_workqueue.o: in function `test_workqueue_init':
test_workqueue.c:(.init.text+0x36f): undefined reference to `__udivdi3'

Use div_u64() to print the resulting elapsed microseconds.

Fixes: 24b2e73f ("workqueue: add test_workqueue benchmark module")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 41e3ccca

lib/test_workqueue.c

+1 −1
Original line number Diff line number Diff line
@@ -242,7 +242,7 @@ static int __init run_bench(int n_threads, const char *scope, const char *label) 


	pr_info("test_workqueue:   %-16s %llu items/sec\tp50=%llu\tp90=%llu\tp95=%llu ns\n",

		label,

		elapsed_us ? total_items * 1000000ULL / elapsed_us : 0,

		elapsed_us ? div_u64(total_items * 1000000ULL, elapsed_us) : 0,

		all_latencies[total_items * 50 / 100],

		all_latencies[total_items * 90 / 100],

		all_latencies[total_items * 95 / 100]);