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 <[email protected]> --- makedumpfile.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/makedumpfile.c b/makedumpfile.c index a511179..c8d1299 100644 --- a/makedumpfile.c +++ b/makedumpfile.c @@ -7939,6 +7939,41 @@ 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("ZERO %-16llu yes Pages filled with zero\n", pfn_zero); + MSG("CACHE %-16llu yes Cache pages\n", pfn_cache); + MSG("CACHE_PRIVATE %-16llu yes Cache pages + private\n", + pfn_cache_private); + MSG("USER %-16llu yes User process pages\n", pfn_user); + MSG("FREE %-16llu yes Free pages\n", pfn_free); + MSG("KERN_DATA %-16llu no Dumpable kernel data \n", + pfn_original - pfn_excluded); + + MSG("\n"); + + MSG("Total pages on system: %-16llu\n", pfn_original); + MSG("\n"); +} + int writeout_dumpfile(void) { -- 1.8.5.3 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
