[CRIU] [PATCH v4 4/6] mem: add dump state of THP_DISABLED prctl

[Mike Rapoport]

Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com>
---
 criu/cr-dump.c          | 3 +++
 criu/include/parasite.h | 1 +
 criu/pie/parasite.c     | 1 +
 images/mm.proto         | 1 +
 4 files changed, 6 insertions(+)

diff --git a/criu/cr-dump.c b/criu/cr-dump.c
index 3f9f8d0..308cc4e 100644
--- a/criu/cr-dump.c
+++ b/criu/cr-dump.c
@@ -507,6 +507,9 @@ static int dump_task_mm(pid_t pid, const struct proc_pid_stat *stat,
 	mme.dumpable = misc->dumpable;
 	mme.has_dumpable = true;
 
+	mme.thp_disabled = misc->thp_disabled;
+	mme.has_thp_disabled = true;
+
 	mme.n_mm_saved_auxv = AT_VECTOR_SIZE;
 	mme.mm_saved_auxv = xmalloc(pb_repeated_size(&mme, mm_saved_auxv));
 	if (!mme.mm_saved_auxv)
diff --git a/criu/include/parasite.h b/criu/include/parasite.h
index cd6d793..115891f 100644
--- a/criu/include/parasite.h
+++ b/criu/include/parasite.h
@@ -124,6 +124,7 @@ struct parasite_dump_misc {
 	u32 umask;
 
 	int dumpable;
+	int thp_disabled;
 };
 
 /*
diff --git a/criu/pie/parasite.c b/criu/pie/parasite.c
index fe08e72..78bbe9e 100644
--- a/criu/pie/parasite.c
+++ b/criu/pie/parasite.c
@@ -177,6 +177,7 @@ static int dump_misc(struct parasite_dump_misc *args)
 	args->umask = sys_umask(0);
 	sys_umask(args->umask); /* never fails */
 	args->dumpable = sys_prctl(PR_GET_DUMPABLE, 0, 0, 0, 0);
+	args->thp_disabled = sys_prctl(PR_GET_THP_DISABLE, 0, 0, 0, 0);
 
 	return 0;
 }
diff --git a/images/mm.proto b/images/mm.proto
index b372f45..e0f14c6 100644
--- a/images/mm.proto
+++ b/images/mm.proto
@@ -29,4 +29,5 @@ message mm_entry {
 
 	optional int32	dumpable	= 15;
 	repeated aio_ring_entry	aios	= 16;
+	optional bool thp_disabled	= 17;
 }
-- 
2.7.4