tools: slabinfo: add "-U" option to show unreclaimable slabs only

[linux-2.6-microblaze.git] / tools / vm / slabinfo.c

diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
index b0b7ef6..f82c2ea 100644 (file)
--- a/tools/vm/slabinfo.c
+++ b/tools/vm/slabinfo.c
@@ -84,6 +84,7 @@ int output_lines = -1;
 int sort_loss;
 int extended_totals;
 int show_bytes;
+int unreclaim_only;
 
 /* Debug options */
 int sanity;
@@ -133,6 +134,7 @@ static void usage(void)
                "-L|--Loss              Sort by loss\n"
                "-X|--Xtotals           Show extended summary information\n"
                "-B|--Bytes             Show size in bytes\n"
+               "-U|--Unreclaim         Show unreclaimable slabs only\n"
                "\nValid debug options (FZPUT may be combined)\n"
                "a / A          Switch on all debug options (=FZUP)\n"
                "-              Switch off all debug options\n"
@@ -569,6 +571,9 @@ static void slabcache(struct slabinfo *s)
        if (strcmp(s->name, "*") == 0)
                return;
 
+       if (unreclaim_only && s->reclaim_account)
+               return;
+
        if (actual_slabs == 1) {
                report(s);
                return;
@@ -1347,6 +1352,7 @@ struct option opts[] = {
        { "Loss", no_argument, NULL, 'L'},
        { "Xtotals", no_argument, NULL, 'X'},
        { "Bytes", no_argument, NULL, 'B'},
+       { "Unreclaim", no_argument, NULL, 'U'},
        { NULL, 0, NULL, 0 }
 };
 
@@ -1358,7 +1364,7 @@ int main(int argc, char *argv[])
 
        page_size = getpagesize();
 
-       while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXB",
+       while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXBU",
                                                opts, NULL)) != -1)
                switch (c) {
                case '1':
@@ -1439,6 +1445,9 @@ int main(int argc, char *argv[])
                case 'B':
                        show_bytes = 1;
                        break;
+               case 'U':
+                       unreclaim_only = 1;
+                       break;
                default:
                        fatal("%s: Invalid option '%c'\n", argv[0], optopt);