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Date: Mon, 4 Nov 2013 17:10:26 +0100 From: Daniel Borkmann <dborkman@...hat.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, fengguang.wu@...el.com Subject: [PATCH net-next 2/3] 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 <fengguang.wu@...el.com> Signed-off-by: Daniel Borkmann <dborkman@...hat.com> --- lib/crc32.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/crc32.c b/lib/crc32.c index 69dd124..3a1dfa8 100644 --- a/lib/crc32.c +++ b/lib/crc32.c @@ -29,6 +29,7 @@ #include <linux/crc32.h> #include <linux/module.h> #include <linux/types.h> +#include <linux/sched.h> #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(); } } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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