mem: add dump state of THP_DISABLED prctl

Acked-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/cr-dump.c

@@ -515,6 +515,9 @@ 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)

criu/include/parasite.h

@@ -124,6 +124,7 @@ struct parasite_dump_misc {
 	u32 umask;
 
 	int dumpable;
+	int thp_disabled;
 };
 
 /*

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;
 }

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;
 }