@@ -100,6 +100,7 @@ mdf_pfn_t pfn_user;
mdf_pfn_t pfn_free;
mdf_pfn_t pfn_hwpoison;
mdf_pfn_t pfn_offline;
+mdf_pfn_t pfn_pmem_userdata;
mdf_pfn_t pfn_elf_excluded;
mdf_pfn_t num_dumped;
@@ -6389,6 +6390,7 @@ __exclude_unnecessary_pages(unsigned long mem_map,
unsigned int order_offset, dtor_offset;
unsigned long flags, mapping, private = 0;
unsigned long compound_dtor, compound_head = 0;
+ unsigned int is_pmem;
/*
* If a multi-page exclusion is pending, do it first
@@ -6443,6 +6445,13 @@ __exclude_unnecessary_pages(unsigned long mem_map,
continue;
}
+ is_pmem = is_pmem_pt_load_range(pfn << PAGESHIFT(), (pfn + 1) << PAGESHIFT());
+ if (is_pmem) {
+ pfn_pmem_userdata++;
+ clear_bit_on_2nd_bitmap_for_kernel(pfn, cycle);
+ continue;
+ }
+
index_pg = pfn % PGMM_CACHED;
pcache = page_cache + (index_pg * SIZE(page));
@@ -8122,7 +8131,7 @@ write_elf_pages_cyclic(struct cache_data *cd_header, struct cache_data *cd_page)
*/
if (info->flag_cyclic) {
pfn_zero = pfn_cache = pfn_cache_private = 0;
- pfn_user = pfn_free = pfn_hwpoison = pfn_offline = 0;
+ pfn_user = pfn_free = pfn_hwpoison = pfn_offline = pfn_pmem_userdata = 0;
pfn_memhole = info->max_mapnr;
}
@@ -9460,7 +9469,7 @@ write_kdump_pages_and_bitmap_cyclic(struct cache_data *cd_header, struct cache_d
* Reset counter for debug message.
*/
pfn_zero = pfn_cache = pfn_cache_private = 0;
- pfn_user = pfn_free = pfn_hwpoison = pfn_offline = 0;
+ pfn_user = pfn_free = pfn_hwpoison = pfn_offline = pfn_pmem_userdata = 0;
pfn_memhole = info->max_mapnr;
/*
@@ -10408,7 +10417,7 @@ print_report(void)
*/
pfn_original = info->max_mapnr - pfn_memhole;
- pfn_excluded = pfn_zero + pfn_cache + pfn_cache_private
+ pfn_excluded = pfn_zero + pfn_cache + pfn_cache_private + pfn_pmem_userdata
+ pfn_user + pfn_free + pfn_hwpoison + pfn_offline;
REPORT_MSG("\n");
@@ -10425,6 +10434,7 @@ print_report(void)
REPORT_MSG(" Free pages : 0x%016llx\n", pfn_free);
REPORT_MSG(" Hwpoison pages : 0x%016llx\n", pfn_hwpoison);
REPORT_MSG(" Offline pages : 0x%016llx\n", pfn_offline);
+ REPORT_MSG(" pmem userdata pages : 0x%016llx\n", pfn_pmem_userdata);
REPORT_MSG(" Remaining pages : 0x%016llx\n",
pfn_original - pfn_excluded);
@@ -10464,7 +10474,7 @@ print_mem_usage(void)
*/
pfn_original = info->max_mapnr - pfn_memhole;
- pfn_excluded = pfn_zero + pfn_cache + pfn_cache_private
+ pfn_excluded = pfn_zero + pfn_cache + pfn_cache_private + pfn_pmem_userdata
+ pfn_user + pfn_free + pfn_hwpoison + pfn_offline;
shrinking = (pfn_original - pfn_excluded) * 100;
shrinking = shrinking / pfn_original;
Generally, the pmem is too large to suitable to be dumped. Further, only the namespace of the pmem is dumpable, but actually currently we have no idea the excatly layout of the namespace in pmem. So we exclude all of them temporarily. And later, we will try to support including/excluding metadata by specific parameter. CC: Baoquan He <bhe@redhat.com> CC: Vivek Goyal <vgoyal@redhat.com> CC: Dave Young <dyoung@redhat.com> CC: kexec@lists.infradead.org Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> --- makedumpfile.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-)