Introduce print_mem_usage to print the result of analysis of /proc/kcore.
The page number of memory in different use are printed.
Signed-off-by: Baoquan He <bhe at redhat.com>
---
makedumpfile.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index b67ede1..a170dd3 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -7830,6 +7830,46 @@ print_report(void)
REPORT_MSG("\n");
}
+static void
+print_mem_usage(void)
+{
+ mdf_pfn_t pfn_original, pfn_excluded, shrinking;
+
+ /*
+ * /proc/vmcore doesn't contain the memory hole area.
+ */
+ pfn_original = info->max_mapnr - pfn_memhole;
+
+ pfn_excluded = pfn_zero + pfn_cache + pfn_cache_private
+ + pfn_user + pfn_free + pfn_hwpoison;
+ shrinking = (pfn_original - pfn_excluded) * 100;
+ shrinking = shrinking / pfn_original;
+
+ MSG("\n");
+ MSG("Page number of memory in different use\n");
+ MSG("--------------------------------------------------\n");
+ MSG("TYPE PAGES EXCLUDABLE DESCRIPTION\n");
+
+ MSG("pfn_zero 0x%016llx yes Pages filled with zero\n", pfn_zero);
+ MSG("pfn_cache 0x%016llx yes Cache pages\n", pfn_cache);
+ MSG("pfn_cache_private 0x%016llx yes Cache pages + private\n",
+ pfn_cache_private);
+ MSG("pfn_user 0x%016llx yes User process data pages\n", pfn_user);
+ MSG("pfn_free 0x%016llx yes Free pages\n", pfn_free);
+ MSG("pfn_hwpoison 0x%016llx yes Hwpoison pages\n", pfn_hwpoison);
+ MSG("pfn_kernel_data 0x%016llx no Dumpable kernel data \n",
+ pfn_original - pfn_excluded);
+
+ MSG("\n");
+
+ MSG("Total pages on system: 0x%016llx\n", pfn_original);
+ MSG("Excludable pages: 0x%016llx\n", pfn_excluded);
+ MSG("Memory Hole: 0x%016llx\n", pfn_memhole);
+ MSG("--------------------------------------------------\n");
+ MSG("Total pages: 0x%016llx\n", info->max_mapnr);
+ MSG("\n");
+}
+
int
writeout_dumpfile(void)
{
--
1.8.4.2
