Expose possible page sizes. Expose the page sizes which are available
(have pages assigned to them) via --page-sizes. Expose all possible page
sizes (supported by the processor) via --page-sizes-all. Page sizes are
listed in numerical order. Lists only page sizes which are actually
available, which have pages assigned to the pool and which are exposed
via a mount point.
Signed-off-by: Andy Whitcroft <[EMAIL PROTECTED]>
Acked-by: Mel Gorman <[EMAIL PROTECTED]>
---
hugeadm.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/hugeadm.c b/hugeadm.c
index 703e724..85b70f2 100644
--- a/hugeadm.c
+++ b/hugeadm.c
@@ -54,6 +54,10 @@ void print_usage()
OPTION("--pool-pages-max <size>:[+|-]<count>", "");
CONT("Adjust pool 'size' upper bound");
+ OPTION("--page-sizes", "Display page sizes that a configured pool");
+ OPTION("--page-sizes-all",
+ "Display page sizes support by the hardware");
+
OPTION("--help, -h", "Prints this message");
}
@@ -67,6 +71,10 @@ int opt_dry_run = 0;
#define LONG_POOL_MIN_ADJ (LONG_POOL|'m')
#define LONG_POOL_MAX_ADJ (LONG_POOL|'M')
+#define LONG_PAGE ('P' << 8)
+#define LONG_PAGE_SIZES (LONG_PAGE|'s')
+#define LONG_PAGE_AVAIL (LONG_PAGE|'a')
+
#define MAX_POOLS 32
static int cmpsizes(const void *p1, const void *p2)
@@ -214,6 +222,26 @@ void pool_adjust(char *cmd, unsigned int counter)
}
}
+void page_sizes(int all)
+{
+ struct hpage_pool pools[MAX_POOLS];
+ int pos;
+ int cnt;
+
+ cnt = __lh_hpool_sizes(pools, MAX_POOLS);
+ if (cnt < 0) {
+ ERROR("unable to obtain pools list");
+ exit(EXIT_FAILURE);
+ }
+ qsort(pools, cnt, sizeof(pools[0]), cmpsizes);
+
+ for (pos = 0; cnt--; pos++) {
+ if (all || (pools[pos].maximum &&
+ hugetlbfs_find_path_for_size(pools[pos].pagesize)))
+ printf("%ld\n", pools[pos].pagesize);
+ }
+}
+
int main(int argc, char** argv)
{
char opts[] = "+h";
@@ -225,10 +253,14 @@ int main(int argc, char** argv)
{"pool-pages-min", required_argument, NULL, LONG_POOL_MIN_ADJ},
{"pool-pages-max", required_argument, NULL, LONG_POOL_MAX_ADJ},
+ {"page-sizes", no_argument, NULL, LONG_PAGE_SIZES},
+ {"page-sizes-all", no_argument, NULL, LONG_PAGE_AVAIL},
+
{0},
};
__lh_hugetlbfs_setup_debug();
+ __lh_setup_mounts();
while (ret != -1) {
ret = getopt_long(argc, argv, opts, long_opts, &index);
@@ -256,6 +288,14 @@ int main(int argc, char** argv)
pool_adjust(optarg, POOL_MAX);
break;
+ case LONG_PAGE_SIZES:
+ page_sizes(0);
+ break;
+
+ case LONG_PAGE_AVAIL:
+ page_sizes(1);
+ break;
+
default:
WARNING("unparsed option %08x\n", ret);
ret = -1;
--
1.6.0.1.451.gc8d31
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