Add a switch to hugeadm that asks for a general report of huge page
availablity on the system. It combines the output of the
--list-all-mounts and --pool-list switches with a list of huge page
sizes with configured pools. It will also let the user know if there
is no swap configured that pool resizing is likely to fail.
Signed-off-by: Eric B Munson <ebmun...@us.ibm.com>
---
hugeadm.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/hugeadm.c b/hugeadm.c
index 2e99b44..9742323 100644
--- a/hugeadm.c
+++ b/hugeadm.c
@@ -98,6 +98,9 @@ void print_usage()
CONT("the specified options would have done without");
CONT("taking any action");
+ OPTION("--explain", "Gives a overview of the status of the system");
+ CONT("with respect to huge page availability");
+
OPTION("--help, -h", "Prints this message");
}
@@ -125,6 +128,8 @@ int opt_hard = 0;
#define LONG_CREATE_GLOBAL_MOUNTS (LONG_MOUNTS|'G')
#define LONG_LIST_ALL_MOUNTS (LONG_MOUNTS|'A')
+#define LONG_EXPLAIN ('e' << 8)
+
#define MAX_POOLS 32
static int cmpsizes(const void *p1, const void *p2)
@@ -606,6 +611,16 @@ void page_sizes(int all)
}
}
+void explain()
+{
+ mounts_list_all();
+ printf("\nHuge page pools:\n");
+ pool_list();
+ printf("\nHuge page sizes with configured pools:\n");
+ page_sizes(0);
+ check_swap();
+}
+
int main(int argc, char** argv)
{
int ops;
@@ -631,6 +646,7 @@ int main(int argc, char** argv)
{"page-sizes", no_argument, NULL, LONG_PAGE_SIZES},
{"page-sizes-all", no_argument, NULL, LONG_PAGE_AVAIL},
{"dry-run", no_argument, NULL, 'd'},
+ {"explain", no_argument, NULL, LONG_EXPLAIN},
{0},
};
@@ -721,6 +737,10 @@ int main(int argc, char** argv)
page_sizes(1);
break;
+ case LONG_EXPLAIN:
+ explain();
+ break;
+
default:
WARNING("unparsed option %08x\n", ret);
ret = -1;
--
1.6.1.2
------------------------------------------------------------------------------
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