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Print the return value of PTR_ERR(pgdat->kswapd) also. Signed-off-by: Angus Chen --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 6f13394b112e..0436f0ed9671 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -7892,8 +7892,9 @@ void __meminit kswapd_run(int nid) pgdat->kswapd = kthread_run(kswapd, pgdat, "kswapd%d", nid); if (IS_ERR(pgdat->kswapd)) { /* failure at boot is fatal */ + pr_err("Failed to start kswapd on node %d，ret=%ld\n", + nid, PTR_ERR(pgdat->kswapd)); BUG_ON(system_state < SYSTEM_RUNNING); - pr_err("Failed to start kswapd on node %d\n", nid); pgdat->kswapd = NULL; } } -- 2.25.1