From: Qiao Nuohan <qiaonuohan@xxxxxxxxxxxxxx>
read_pfn_parallel is used to enable reading pages from vmcore parallely.
Current supported format is kdump-compressed and elf, mmap elf format
is also supported.
Signed-off-by: Qiao Nuohan <qiaonuohan at cn.fujitsu.com>
---
Makefile | 2 ++
makedumpfile.c | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
index fc21a3f..b1daf5b 100644
--- a/Makefile
+++ b/Makefile
@@ -67,6 +67,8 @@ LIBS := -lsnappy $(LIBS)
CFLAGS += -DUSESNAPPY
endif
+LIBS := -lpthread $(LIBS)
+
all: makedumpfile
$(OBJ_PART): $(SRC_PART)
diff --git a/makedumpfile.c b/makedumpfile.c
index 44c78b4..e15855b 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -6349,6 +6349,40 @@ read_pfn(mdf_pfn_t pfn, unsigned char *buf)
}
int
+read_pfn_parallel(int fd_memory, mdf_pfn_t pfn, unsigned char *buf,
+ struct dump_bitmap* bitmap_memory_parallel,
+ struct mmap_cache *mmap_cache)
+{
+ unsigned long long paddr;
+ unsigned long long pgaddr;
+
+ paddr = pfn_to_paddr(pfn);
+
+ pgaddr = PAGEBASE(paddr);
+
+ if (info->flag_refiltering) {
+ if (!readpage_kdump_compressed_parallel(fd_memory, pgaddr, buf,
+ bitmap_memory_parallel)) {
+ ERRMSG("Can't get the page data.\n");
+ return FALSE;
+ }
+ } else {
+ char *mapbuf = mappage_elf_parallel(fd_memory, pgaddr,
+ mmap_cache);
+ if (mapbuf) {
+ memcpy(buf, mapbuf, info->page_size);
+ } else {
+ if (!readpage_elf_parallel(fd_memory, pgaddr, buf)) {
+ ERRMSG("Can't get the page data.\n");
+ return FALSE;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+int
get_loads_dumpfile_cyclic(void)
{
int i, phnum, num_new_load = 0;
--
1.7.1
