[Crash-utility] [PATCH 2/2] Move NAME column in "kmem -s" output to the last of line
Kazuhito Hagio
k-hagio at ab.jp.nec.com
Mon Jul 30 16:28:42 UTC 2018
For readability, move NAME column in "kmem -s" output to the last of line.
---
help.c | 136 +++++++++++++++++++++++++++++++--------------------------------
memory.c | 44 +++++----------------
2 files changed, 78 insertions(+), 102 deletions(-)
diff --git a/help.c b/help.c
index 83cda7c..a189038 100644
--- a/help.c
+++ b/help.c
@@ -6692,8 +6692,8 @@ char *help_kmem[] = {
" Find all of the combined slab/page structures that are used by",
" the kmalloc-8192 slab cache:\n",
" %s> kmem -s kmalloc-8192",
-" CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE",
-" ffff880215802e00 kmalloc-8192 8192 65 80 20 32k",
+" CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME",
+" ffff880215802e00 8192 65 80 20 32k kmalloc-8192",
" %s> kmem -m slab_cache | grep ffff880215802e00",
" ffffea0004117800 ffff880215802e00 ",
" ffffea00041ca600 ffff880215802e00 ",
@@ -6889,72 +6889,72 @@ char *help_kmem[] = {
" ",
" Display kmalloc() slab data:\n",
" %s> kmem -s",
-" CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE",
-" c02eadc0 kmem_cache 232 58 68 4 4k",
-" f79c2888 ip_vs_conn 128 0 0 0 4k",
-" f79c2970 tcp_tw_bucket 96 0 0 0 4k",
-" f79c2a58 tcp_bind_bucket 32 12 565 5 4k",
-" f79c2b40 tcp_open_request 64 0 59 1 4k",
-" f79c2c28 inet_peer_cache 64 1 59 1 4k",
-" f79c2d10 ip_fib_hash 32 11 339 3 4k",
-" f79c2df8 ip_dst_cache 160 8 120 5 4k",
-" f79c2ee0 arp_cache 128 1 30 1 4k",
-" c8402970 blkdev_requests 96 30208 37800 945 4k",
-" c8402a58 nfs_read_data 384 0 0 0 4k",
-" c8402b40 nfs_write_data 384 0 0 0 4k",
-" c8402c28 nfs_page 96 0 0 0 4k",
-" c8402d10 dnotify cache 20 0 0 0 4k",
-" c8402df8 file lock cache 92 3 336 8 4k",
-" c8402ee0 fasync cache 16 0 0 0 4k",
-" c84027a0 uid_cache 32 3 339 3 4k",
-" c84026b8 skbuff_head_cache 160 320 624 26 4k",
-" c84025d0 sock 832 32 180 20 8k",
-" c84024e8 sigqueue 132 0 203 7 4k",
-" c8402400 cdev_cache 64 19 472 8 4k",
-" c8402318 bdev_cache 64 8 236 4 4k",
-" c8402230 mnt_cache 96 11 120 3 4k",
-" c8402148 inode_cache 480 817 848 106 4k",
-" c8402060 dentry_cache 128 1352 1470 49 4k",
-" c8403ee0 filp 96 244 440 11 4k",
-" c8403df8 names_cache 4096 0 12 12 4k",
-" c8403d10 buffer_head 96 14936 16000 400 4k",
-" c8403c28 mm_struct 128 25 240 8 4k",
-" c8403b40 vm_area_struct 64 393 1298 22 4k",
-" c8403a58 fs_cache 64 30 472 8 4k",
-" c8403970 files_cache 416 30 135 15 4k",
-" c8403888 signal_act 1312 32 99 33 4k",
-" c84037a0 size-131072(DMA) 131072 0 0 0 128k",
-" c84036b8 size-131072 131072 1 1 1 128k",
-" c84035d0 size-65536(DMA) 65536 0 0 0 64k",
-" c84034e8 size-65536 65536 0 0 0 64k",
-" c8403400 size-32768(DMA) 32768 0 0 0 32k",
-" c8403318 size-32768 32768 0 1 1 32k",
-" c8403230 size-16384(DMA) 16384 0 0 0 16k",
-" c8403148 size-16384 16384 0 0 0 16k",
-" c8403060 size-8192(DMA) 8192 0 0 0 8k",
-" c8401ee0 size-8192 8192 1 2 2 8k",
-" c8401df8 size-4096(DMA) 4096 0 0 0 4k",
-" c8401d10 size-4096 4096 30 30 30 4k",
-" c8401c28 size-2048(DMA) 2048 0 0 0 4k",
-" c8401b40 size-2048 2048 37 132 66 4k",
-" c8401a58 size-1024(DMA) 1024 0 0 0 4k",
-" c8401970 size-1024 1024 301 328 82 4k",
-" c8401888 size-512(DMA) 512 0 0 0 4k",
-" c84017a0 size-512 512 141 168 21 4k",
-" c84016b8 size-256(DMA) 256 0 0 0 4k",
-" c84015d0 size-256 256 80 435 29 4k",
-" c84014e8 size-128(DMA) 128 0 0 0 4k",
-" c8401400 size-128 128 508 840 28 4k",
-" c8401318 size-64(DMA) 64 0 0 0 4k",
-" c8401230 size-64 64 978 1357 23 4k",
-" c8401148 size-32(DMA) 32 0 0 0 4k",
-" c8401060 size-32 32 1244 1808 16 4k",
+" CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME",
+" c02eadc0 232 58 68 4 4k kmem_cache",
+" f79c2888 128 0 0 0 4k ip_vs_conn",
+" f79c2970 96 0 0 0 4k tcp_tw_bucket",
+" f79c2a58 32 12 565 5 4k tcp_bind_bucket",
+" f79c2b40 64 0 59 1 4k tcp_open_request",
+" f79c2c28 64 1 59 1 4k inet_peer_cache",
+" f79c2d10 32 11 339 3 4k ip_fib_hash",
+" f79c2df8 160 8 120 5 4k ip_dst_cache",
+" f79c2ee0 128 1 30 1 4k arp_cache",
+" c8402970 96 30208 37800 945 4k blkdev_requests",
+" c8402a58 384 0 0 0 4k nfs_read_data",
+" c8402b40 384 0 0 0 4k nfs_write_data",
+" c8402c28 96 0 0 0 4k nfs_page",
+" c8402d10 20 0 0 0 4k dnotify cache",
+" c8402df8 92 3 336 8 4k file lock cache",
+" c8402ee0 16 0 0 0 4k fasync cache",
+" c84027a0 32 3 339 3 4k uid_cache",
+" c84026b8 160 320 624 26 4k skbuff_head_cache",
+" c84025d0 832 32 180 20 8k sock",
+" c84024e8 132 0 203 7 4k sigqueue",
+" c8402400 64 19 472 8 4k cdev_cache",
+" c8402318 64 8 236 4 4k bdev_cache",
+" c8402230 96 11 120 3 4k mnt_cache",
+" c8402148 480 817 848 106 4k inode_cache",
+" c8402060 128 1352 1470 49 4k dentry_cache",
+" c8403ee0 96 244 440 11 4k filp",
+" c8403df8 4096 0 12 12 4k names_cache",
+" c8403d10 96 14936 16000 400 4k buffer_head",
+" c8403c28 128 25 240 8 4k mm_struct",
+" c8403b40 64 393 1298 22 4k vm_area_struct",
+" c8403a58 64 30 472 8 4k fs_cache",
+" c8403970 416 30 135 15 4k files_cache",
+" c8403888 1312 32 99 33 4k signal_act",
+" c84037a0 131072 0 0 0 128k size-131072(DMA)",
+" c84036b8 131072 1 1 1 128k size-131072",
+" c84035d0 65536 0 0 0 64k size-65536(DMA)",
+" c84034e8 65536 0 0 0 64k size-65536",
+" c8403400 32768 0 0 0 32k size-32768(DMA)",
+" c8403318 32768 0 1 1 32k size-32768",
+" c8403230 16384 0 0 0 16k size-16384(DMA)",
+" c8403148 16384 0 0 0 16k size-16384",
+" c8403060 8192 0 0 0 8k size-8192(DMA)",
+" c8401ee0 8192 1 2 2 8k size-8192",
+" c8401df8 4096 0 0 0 4k size-4096(DMA)",
+" c8401d10 4096 30 30 30 4k size-4096",
+" c8401c28 2048 0 0 0 4k size-2048(DMA)",
+" c8401b40 2048 37 132 66 4k size-2048",
+" c8401a58 1024 0 0 0 4k size-1024(DMA)",
+" c8401970 1024 301 328 82 4k size-1024",
+" c8401888 512 0 0 0 4k size-512(DMA)",
+" c84017a0 512 141 168 21 4k size-512",
+" c84016b8 256 0 0 0 4k size-256(DMA)",
+" c84015d0 256 80 435 29 4k size-256",
+" c84014e8 128 0 0 0 4k size-128(DMA)",
+" c8401400 128 508 840 28 4k size-128",
+" c8401318 64 0 0 0 4k size-64(DMA)",
+" c8401230 64 978 1357 23 4k size-64",
+" c8401148 32 0 0 0 4k size-32(DMA)",
+" c8401060 32 1244 1808 16 4k size-32",
" ",
" Display all slab data in the \"arp_cache\" cache:\n",
" %s> kmem -S arp_cache",
-" CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE",
-" f79c2ee0 arp_cache 128 1 30 1 4k",
+" CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME",
+" f79c2ee0 128 1 30 1 4k arp_cache",
" SLAB MEMORY TOTAL ALLOCATED FREE",
" f729d000 f729d0a0 30 1 29",
" FREE / [ALLOCATED]",
@@ -6991,8 +6991,8 @@ char *help_kmem[] = {
" ",
" Search the kmalloc() slab subsystem for address c3fbdb60:\n",
" %s> kmem -s c3fbdb60",
-" CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE",
-" c8402970 blkdev_requests 96 30208 37800 945 4k",
+" CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME",
+" c8402970 96 30208 37800 945 4k blkdev_requests",
" SLAB MEMORY TOTAL ALLOCATED FREE",
" c3fbd020 c3fbd0e0 40 40 0",
" FREE / [ALLOCATED]",
@@ -7000,8 +7000,8 @@ char *help_kmem[] = {
" ",
" Make a generic search (no flags) for the same address c3fbdb60:\n",
" %s> kmem c3fbdb60 ",
-" CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE",
-" c8402970 blkdev_requests 96 30208 37800 945 4k",
+" CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME",
+" c8402970 96 30208 37800 945 4k blkdev_requests",
" SLAB MEMORY TOTAL ALLOCATED FREE",
" c3fbd020 c3fbd0e0 40 40 0 ",
" FREE / [ALLOCATED]",
diff --git a/memory.c b/memory.c
index 2e48d7b..5bcf09e 100644
--- a/memory.c
+++ b/memory.c
@@ -9378,7 +9378,7 @@ kmem_cache_init(void)
if (!strlen(kmem_cache_hdr))
sprintf(kmem_cache_hdr,
- "CACHE%sNAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE\n",
+ "CACHE%s OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME\n",
space(VADDR_PRLEN > 8 ? 12 : 4));
if (!strlen(free_inuse_hdr))
@@ -9969,54 +9969,30 @@ static void
dump_kmem_cache_info(struct meminfo *si)
{
char b1[BUFSIZE];
- char b2[BUFSIZE];
- int namelen, sizelen, spacelen;
ulong objsize, allocated, total;
if (si->flags & SLAB_GATHER_FAILURE)
error(INFO, "%s: cannot gather relevant slab data\n", si->curname);
- fprintf(fp, "%s ",
- mkstring(b1, VADDR_PRLEN, LJUST|LONG_HEX, MKSTR(si->cache)));
-
objsize = (vt->flags & KMALLOC_SLUB) ? si->objsize : si->size;
- namelen = strlen(si->curname);
- sprintf(b2, "%ld", objsize);
- sizelen = strlen(b2);
- spacelen = 0;
-
- if (namelen++ > 18) {
- spacelen = 29 - namelen - sizelen;
- fprintf(fp, "%s%s%ld ", si->curname,
- space(spacelen <= 0 ? 1 : spacelen), objsize);
- if (spacelen > 0)
- spacelen = 1;
- if (si->flags & SLAB_GATHER_FAILURE)
- sprintf(b1, "%c%ds ", '%', 9 + spacelen - 1);
- else
- sprintf(b1, "%c%dld ", '%', 9 + spacelen - 1);
- } else {
- fprintf(fp, "%-18s %8ld ", si->curname, objsize);
- if (si->flags & SLAB_GATHER_FAILURE)
- sprintf(b1, "%c%ds ", '%', 9);
- else
- sprintf(b1, "%c%dld ", '%', 9);
- }
+ fprintf(fp, "%s %8ld ",
+ mkstring(b1, VADDR_PRLEN, LJUST|LONG_HEX, MKSTR(si->cache)),
+ objsize);
if (si->flags & SLAB_GATHER_FAILURE) {
- fprintf(fp, b1, "?");
- fprintf(fp, "%8s %5s %4ldk\n",
- "?", "?", si->slabsize/1024);
+ fprintf(fp, "%9s %8s %5s ", "?", "?", "?");
} else {
allocated = (vt->flags & (PERCPU_KMALLOC_V1|PERCPU_KMALLOC_V2)) ?
si->inuse - si->cpucached_cache : si->inuse;
total = (vt->flags & KMALLOC_SLUB) ?
si->inuse + si->free : si->num_slabs * si->c_num;
- fprintf(fp, b1, allocated);
- fprintf(fp, "%8ld %5ld %4ldk\n", total,
- si->num_slabs, si->slabsize/1024);
+
+ fprintf(fp, "%9ld %8ld %5ld ",
+ allocated, total, si->num_slabs);
}
+
+ fprintf(fp, "%4ldk %s\n", si->slabsize/1024, si->curname);
}
#define DUMP_SLAB_INFO() \
--
1.8.3.1
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