The patch titled
Subject: tools/vm/slabinfo: limit the number of reported slabs
has been added to the -mm tree. Its filename is
tools-vm-slabinfo-limit-the-number-of-reported-slabs.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/tools-vm-slabinfo-limit-the-number-of-reported-slabs.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/tools-vm-slabinfo-limit-the-number-of-reported-slabs.patch
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------------------------------------------------------
From: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Subject: tools/vm/slabinfo: limit the number of reported slabs
Introduce opt "-N|--lines=K" to limit the number of slabs
being reported in output_slabs().
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/vm/slabinfo.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff -puN tools/vm/slabinfo.c~tools-vm-slabinfo-limit-the-number-of-reported-slabs tools/vm/slabinfo.c
--- a/tools/vm/slabinfo.c~tools-vm-slabinfo-limit-the-number-of-reported-slabs
+++ a/tools/vm/slabinfo.c
@@ -79,6 +79,7 @@ int sort_active = 0;
int set_debug = 0;
int show_ops = 0;
int show_activity = 0;
+int output_lines = -1;
/* Debug options */
int sanity = 0;
@@ -124,6 +125,7 @@ static void usage(void)
"-v|--validate Validate slabs\n"
"-z|--zero Include empty slabs\n"
"-1|--1ref Single reference\n"
+ "-N|--lines=K Show the first K slabs\n"
"\nValid debug options (FZPUT may be combined)\n"
"a / A Switch on all debug options (=FZUP)\n"
"- Switch off all debug options\n"
@@ -1242,11 +1244,14 @@ static void output_slabs(void)
{
struct slabinfo *slab;
- for (slab = slabinfo; slab < slabinfo + slabs; slab++) {
+ for (slab = slabinfo; (slab < slabinfo + slabs) &&
+ output_lines != 0; slab++) {
if (slab->alias)
continue;
+ if (output_lines != -1)
+ output_lines--;
if (show_numa)
slab_numa(slab, 0);
@@ -1285,6 +1290,7 @@ struct option opts[] = {
{ "validate", no_argument, NULL, 'v' },
{ "zero", no_argument, NULL, 'z' },
{ "1ref", no_argument, NULL, '1'},
+ { "lines", required_argument, NULL, 'N'},
{ NULL, 0, NULL, 0 }
};
@@ -1296,7 +1302,7 @@ int main(int argc, char *argv[])
page_size = getpagesize();
- while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTS",
+ while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:",
opts, NULL)) != -1)
switch (c) {
case '1':
@@ -1358,7 +1364,13 @@ int main(int argc, char *argv[])
case 'S':
sort_size = 1;
break;
-
+ case 'N':
+ if (optarg) {
+ output_lines = atoi(optarg);
+ if (output_lines < 1)
+ output_lines = 1;
+ }
+ break;
default:
fatal("%s: Invalid option '%c'\n", argv[0], optopt);
_
Patches currently in -mm which might be from sergey.senozhatsky@xxxxxxxxx are
maintainers-add-myself-as-zsmalloc-reviewer.patch
tools-vm-slabinfo-use-getopt-no_argument-optional_argument.patch
tools-vm-slabinfo-limit-the-number-of-reported-slabs.patch
tools-vm-slabinfo-sort-slabs-by-loss.patch
tools-vm-slabinfo-fix-alternate-opts-names.patch
tools-vm-slabinfo-introduce-extended-totals-mode.patch
tools-vm-slabinfo-output-sizes-in-bytes.patch
tools-vm-slabinfo-cosmetic-globals-cleanup.patch
tools-vm-slabinfo-gnuplot-slabifo-extended-stat.patch
zram-keep-the-exact-overcommited-value-in-mem_used_max.patch
mm-zsmalloc-constify-struct-zs_pool-name.patch
zsmalloc-use-preempth-for-in_interrupt.patch
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