| From: Angus Chen <angus.chen@jaguarmicro.com> |
| Subject: mm/vmscan: print err before panic |
| Date: Wed, 6 Sep 2023 16:37:00 +0800 |
| |
| If panic is enable,the err information will not be printed before bugon, |
| So swap it. Print the return value of PTR_ERR(pgdat->kswapd) also. |
| |
| Link: https://lkml.kernel.org/r/20230906083700.181-1-angus.chen@jaguarmicro.com |
| Signed-off-by: Angus Chen <angus.chen@jaguarmicro.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| mm/vmscan.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/mm/vmscan.c~mm-vmscan-print-err-before-panic |
| +++ a/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; |
| } |
| } |
| _ |
