[root@test-01 fmem]# make
rm -f *.o *.ko *.mod.c Module.symvers Module.markers modules.order \.*.o.cmd \.*.ko.cmd \.*.o.d
rm -rf \.tmp_versions
make -C /lib/modules/`uname -r`/build SUBDIRS=`pwd` modules
make[1]: Entering directory `/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64'
/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64/Makefile:205: ================= WARNING ================
/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64/Makefile:206: 'SUBDIRS' will be removed after Linux 5.3
/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64/Makefile:207: Please use 'M=' or 'KBUILD_EXTMOD' instead
/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64/Makefile:208: ==========================================
CC [M] /root/fmem/lkm.o
/root/fmem/lkm.c:32:27: fatal error: linux/bootmem.h: No such file or directory
#include <linux/bootmem.h>
^
compilation terminated.
make[3]: *** [/root/fmem/lkm.o] Error 1
make[2]: *** [_module_/root/fmem] Error 2
make[1]: *** [sub-make] Error 2
make[1]: Leaving directory `/usr/src/kernels/5.1.14-1.el7.elrepo.x86_64'
make: *** [fmem] Error 2
[root@test-01 fmem]# uname -a
Linux test-01 5.1.14-1.el7.elrepo.x86_64 #1 SMP Sat Jun 22 08:30:29 EDT 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@test-01 fmem]# cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core) 
