From cc0ac1999589c9f713550adde85a09b0dbb75d86 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 4 Nov 2013 17:10:26 +0100 Subject: [PATCH] lib: crc32: conditionally resched when running testcases Fengguang reports that when crc32 selftests are running on startup, on some e.g. 32bit systems, we can get a CPU stall like "INFO: rcu_sched self-detected stall on CPU { 0} (t=2101 jiffies g=4294967081 c=4294967080 q=41)". As this is not intended, add a cond_resched() at the end of a test case to fix it. Introduced by efba721f63 ("lib: crc32: add test cases for crc32{, c}_combine routines"). Reported-by: Fengguang Wu Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller --- lib/crc32.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/crc32.c b/lib/crc32.c index 69dd124f0cfc..3a1dfa84203c 100644 --- a/lib/crc32.c +++ b/lib/crc32.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "crc32defs.h" #if CRC_LE_BITS > 8 @@ -1054,6 +1055,7 @@ static int __init crc32c_combine_test(void) crc_full == test[i].crc32c_le)) errors++; runs++; + cond_resched(); } } @@ -1147,6 +1149,7 @@ static int __init crc32_combine_test(void) crc_full == test[i].crc_le)) errors++; runs++; + cond_resched(); } } -- 2.39.5