The patch titled
Subject: tools/vm/slabinfo: add option to sort by partial slabs
has been added to the -mm tree. Its filename is
tools-vm-slabinfo-add-option-to-sort-by-partial-slabs.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/tools-vm-slabinfo-add-option-to-sort-by-partial-slabs.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/tools-vm-slabinfo-add-option-to-sort-by-partial-slabs.patch
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------------------------------------------------------
From: "Tobin C. Harding" <tobin@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx
Signed-off-by: Tobin C. Harding <tobin@xxxxxxxxxx>
Cc: Alexander Duyck <alexander.duyck@xxxxxxxxx>
Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>,
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxx>
Cc: Qian Cai <cai@xxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/vm/slabinfo.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/tools/vm/slabinfo.c~tools-vm-slabinfo-add-option-to-sort-by-partial-slabs
+++ a/tools/vm/slabinfo.c
@@ -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;
_
Patches currently in -mm which might be from tobin@xxxxxxxxxx are
ocfs2-fix-error-path-kobject-memory-leak.patch
tools-vm-slabinfo-order-command-line-options.patch
tools-vm-slabinfo-add-partial-slab-listing-to-x.patch
tools-vm-slabinfo-add-option-to-sort-by-partial-slabs.patch
tools-vm-slabinfo-add-sorting-info-to-help-menu.patch
