redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

tools/vm/slabinfo: add option to sort by partial slabs 

We would like to get a better view of the level of fragmentation within
the SLUB allocator.  Total number of partial slabs is an indicator of
fragmentation.

Add a command line option (-P | --partial) to sort the slab list by total
number of partial slabs.

Link: http://lkml.kernel.org/r/20190426022622.4089-4-tobin@kernel.org
Signed-off-by: Tobin C. Harding <tobin@kernel.org>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>,
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Pekka Enberg <penberg@iki.fi>
Cc: Qian Cai <cai@lca.pw>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
alistair/sunxi64-5.4-dsi
Tobin C. Harding 2019-07-11 20:59:42 -07:00 committed by Linus Torvalds
parent 1106b205a3
commit 53a83f9766
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
tools/vm/slabinfo.c
View File

@ -111,7 +111,7 @@ static void fatal(const char *x, ...)
static void usage(void)
{
printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n"
"slabinfo [-aABDefhilLnorsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
"slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
"-a|--aliases Show aliases\n"
"-A|--activity Most active slabs first\n"
"-B|--Bytes Show size in bytes\n"
@ -125,6 +125,7 @@ static void usage(void)
"-n|--numa Show NUMA information\n"
"-N|--lines=K Show the first K slabs\n"
"-o|--ops Show kmem_cache_ops\n"
"-P|--partial Sort by number of partial slabs\n"
"-r|--report Detailed report on single slabs\n"
"-s|--shrink Shrink slabs\n"
"-S|--Size Sort by size\n"
@ -1361,6 +1362,7 @@ struct option opts[] = {
{ "numa", no_argument, NULL, 'n' },
{ "lines", required_argument, NULL, 'N'},
{ "ops", no_argument, NULL, 'o' },
{ "partial", no_argument, NULL, 'p'},
{ "report", no_argument, NULL, 'r' },
{ "shrink", no_argument, NULL, 's' },
{ "Size", no_argument, NULL, 'S'},
@ -1382,7 +1384,7 @@ int main(int argc, char *argv[])
page_size = getpagesize();
while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:orsStTUvXz1",
while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1",
opts, NULL)) != -1)
switch (c) {
case 'a':
@ -1436,6 +1438,9 @@ int main(int argc, char *argv[])
case 'r':
show_report = 1;
break;
case 'P':
sort_partial = 1;
break;
case 's':
shrink = 1;
break;