linux.git: printk() problem

From: Tetsuo Handa
Date: Wed Oct 12 2016 - 09:32:54 EST


Hello.

I noticed that current linux.git generates hardly readable console output
due to KERN_CONT changes. Are you suggesting developers that output like
this be fixed?

[ 93.723582] Mem-Info:
[ 93.725919] active_anon:380970 inactive_anon:2098 isolated_anon:0
[ 93.725919] active_file:242 inactive_file:275 isolated_file:0
[ 93.725919] unevictable:0 dirty:0 writeback:65 unstable:0
[ 93.725919] slab_reclaimable:3825 slab_unreclaimable:12527
[ 93.725919] mapped:760 shmem:2164 pagetables:9297 bounce:0
[ 93.725919] free:14046 free_pcp:74 free_cma:0
[ 93.735626] Node 0 active_anon:1523880kB inactive_anon:8392kB active_file:968kB inactive_file:1100kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3040kB dirty:0kB writeback:244kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 1056768kB anon_thp: 8656kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
[ 93.742894] Node 0 [ 93.743319] DMA free:7156kB min:408kB low:508kB high:608kB active_anon:8672kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:40kB kernel_stack:0kB pagetables:36kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 93.750951] lowmem_reserve[]:[ 93.751597] 0
1699[ 93.752678] 1699
1699[ 93.753910]
[ 93.754822] Node 0 [ 93.755216] DMA32 free:49028kB min:44644kB low:55804kB high:66964kB active_anon:1515208kB inactive_anon:8392kB active_file:968kB inactive_file:960kB unevictable:0kB writepending:232kB present:2080640kB managed:1760736kB mlocked:0kB slab_reclaimable:15300kB slab_unreclaimable:50068kB kernel_stack:20320kB pagetables:37152kB bounce:0kB free_pcp:436kB local_pcp:240kB free_cma:0kB
[ 93.763709] lowmem_reserve[]:[ 93.764235] 0
0[ 93.765630] 0
0[ 93.767544]
[ 93.768676] Node 0 [ 93.769135] DMA:
1*4kB [ 93.770932] (U)
0*8kB [ 93.772192] 1*16kB
(U) [ 93.773438] 1*32kB
(M) [ 93.774574] 1*64kB
(U) [ 93.775997] 1*128kB
(U) [ 93.777665] 1*256kB
(U) [ 93.778861] 1*512kB
(M) [ 93.780004] 2*1024kB
(UM) [ 93.781225] 0*2048kB
1*4096kB [ 93.782422] (M)
[ 93.783423] = 7156kB
[ 93.784445] Node 0 [ 93.784844] DMA32:
1265*4kB [ 93.786204] (UMEH)
790*8kB [ 93.787412] (UMEH)
335*16kB [ 93.788634] (UEH)
265*32kB [ 93.790037] (UE)
89*64kB [ 93.791254] (UEH)
23*128kB [ 93.792541] (UME)
9*256kB [ 93.793787] (ME)
13*512kB [ 93.794956] (UME)
6*1024kB [ 93.796094] (UME)
0*2048kB [ 93.797435] 0*4096kB
[ 93.798413] = 48964kB
[ 93.799357] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 93.802221] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 93.804476] 2700 total pagecache pages
[ 93.805949] 0 pages in swap cache
[ 93.807557] Swap cache stats: add 0, delete 0, find 0/0
[ 93.809417] Free swap = 0kB
[ 93.810573] Total swap = 0kB
[ 93.811788] 524157 pages RAM
[ 93.812903] 0 pages HighMem/MovableOnly
[ 93.814216] 79997 pages reserved
[ 93.815292] 0 pages hwpoisoned

[ 185.497015] Showing all locks held in the system:
[ 185.500009] 1 lock held by systemd/1:
[ 185.501377] #0: [ 185.501717] (
&(&ip->i_mmaplock)->mr_lock[ 185.503347] ){++++++}
, at: [ 185.504566] [<ffffffff812a1600>] xfs_ilock+0xd0/0xe0
[ 185.506157] 2 locks held by khungtaskd/46:
[ 185.507553] #0: [ 185.507896] (
rcu_read_lock[ 185.509091] ){......}
, at: [ 185.510277] [<ffffffff8112054e>] watchdog+0x9e/0x480
[ 185.512072] #1: [ 185.512413] (
tasklist_lock[ 185.513602] ){.+.+..}
, at: [ 185.514802] [<ffffffff810b5adf>] debug_show_all_locks+0x3f/0x1b0