PROBLEM: selftest/vm/cow.c failed to compile (‘MADV_PAGEOUT’ undeclared)
From: Mirsad Goran Todorovac
Date: Sun Jan 08 2023 - 05:59:01 EST
Hi all,
During "make kselftest" there is an error in selftest/vm/cow.c compilation on
platform:
- Lenovo desktop 10TX000VCR (LENOVO_MT_10TX_BU_Lenovo_FM_V530S-07ICB)
- AlmaLinux 8.7 (CentOS fork)
- gcc 8.5.0 20210514 (Red Hat 8.5.0-15)
- vanilla kernel 6.2-rc2 from the torvalds mainline tree.
Compilation fails to find "#define MADV_PAGEOUT":
[root@pc-mtodorov vm]# make
gcc -Wall -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../.. -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -isystem /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -no-pie cow.c vm_util.c -lrt -lpthread -o /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm/cow
cow.c: In function ‘do_run_with_base_page’:
cow.c:755:26: error: ‘MADV_PAGEOUT’ undeclared (first use in this function); did you mean ‘MADV_RANDOM’?
madvise(mem, pagesize, MADV_PAGEOUT);
^~~~~~~~~~~~
MADV_RANDOM
cow.c:755:26: note: each undeclared identifier is reported only once for each function it appears in
cow.c: In function ‘do_run_with_thp’:
cow.c:914:22: error: ‘MADV_PAGEOUT’ undeclared (first use in this function); did you mean ‘MADV_RANDOM’?
madvise(mem, size, MADV_PAGEOUT);
^~~~~~~~~~~~
MADV_RANDOM
make: *** [../lib.mk:145: /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm/cow] Error 1
[root@pc-mtodorov vm]#
MADV_PAGEOUT is defined in #include <asm-generic/mman-common.h> :
[root@pc-mtodorov vm]# grep MADV_PAGEOUT -r /usr/include
/usr/include/asm-generic/mman-common.h:#define MADV_PAGEOUT 21 /* reclaim these pages */
[root@pc-mtodorov vm]# grep MADV_PAGEOUT -r ../../../../usr/include
../../../../usr/include/asm-generic/mman-common.h:#define MADV_PAGEOUT 21 /* reclaim these pages */
[root@pc-mtodorov vm]#
However, gcc -E shows that asm-generic/mman-common.h is somehow never included:
---------------------------------------------------------------------------------------------
[root@pc-mtodorov vm]# gcc -Wall -E -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../.. -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -isystem /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -no-pie cow.c | cat -s | less
# 1 "/usr/include/sys/mman.h" 1 3 4
# 25 "/usr/include/sys/mman.h" 3 4
# 1 "/usr/lib/gcc/x86_64-redhat-linux/8/include/stddef.h" 1 3 4
# 26 "/usr/include/sys/mman.h" 2 3 4
# 41 "/usr/include/sys/mman.h" 3 4
# 1 "/usr/include/bits/mman.h" 1 3 4
# 49 "/usr/include/bits/mman.h" 3 4
# 1 "/usr/include/bits/mman-linux.h" 1 3 4
# 117 "/usr/include/bits/mman-linux.h" 3 4
# 1 "/usr/include/bits/mman-shared.h" 1 3 4
# 42 "/usr/include/bits/mman-shared.h" 3 4
int memfd_create (const char *__name, unsigned int __flags) __attribute__ ((__nothrow__ , __leaf__));
int mlock2 (const void *__addr, size_t __length, unsigned int __flags) __attribute__ ((__nothrow__ , __leaf__));
int pkey_alloc (unsigned int __flags, unsigned int __access_rights) __attribute__ ((__nothrow__ , __leaf__));
int pkey_set (int __key, unsigned int __access_rights) __attribute__ ((__nothrow__ , __leaf__));
int pkey_get (int __key) __attribute__ ((__nothrow__ , __leaf__));
int pkey_free (int __key) __attribute__ ((__nothrow__ , __leaf__));
int pkey_mprotect (void *__addr, size_t __len, int __prot, int __pkey) __attribute__ ((__nothrow__ , __leaf__));
# 117 "/usr/include/bits/mman-linux.h" 2 3 4
# 49 "/usr/include/bits/mman.h" 2 3 4
# 42 "/usr/include/sys/mman.h" 2 3 4
# 57 "/usr/include/sys/mman.h" 3 4
extern void *mmap (void *__addr, size_t __len, int __prot,
int __flags, int __fd, __off_t __offset) __attribute__ ((__nothrow__ , __leaf__));
# 70 "/usr/include/sys/mman.h" 3 4
extern void *mmap64 (void *__addr, size_t __len, int __prot,
int __flags, int __fd, __off64_t __offset) __attribute__ ((__nothrow__ , __leaf__));
extern int munmap (void *__addr, size_t __len) __attribute__ ((__nothrow__ , __leaf__));
extern int mprotect (void *__addr, size_t __len, int __prot) __attribute__ ((__nothrow__ , __leaf__));
extern int msync (void *__addr, size_t __len, int __flags);
extern int madvise (void *__addr, size_t __len, int __advice) __attribute__ ((__nothrow__ , __leaf__));
extern int posix_madvise (void *__addr, size_t __len, int __advice) __attribute__ ((__nothrow__ , __leaf__));
extern int mlock (const void *__addr, size_t __len) __attribute__ ((__nothrow__ , __leaf__));
extern int munlock (const void *__addr, size_t __len) __attribute__ ((__nothrow__ , __leaf__));
extern int mlockall (int __flags) __attribute__ ((__nothrow__ , __leaf__));
extern int munlockall (void) __attribute__ ((__nothrow__ , __leaf__));
extern int mincore (void *__start, size_t __len, unsigned char *__vec)
__attribute__ ((__nothrow__ , __leaf__));
# 133 "/usr/include/sys/mman.h" 3 4
extern void *mremap (void *__addr, size_t __old_len, size_t __new_len,
int __flags, ...) __attribute__ ((__nothrow__ , __leaf__));
extern int remap_file_pages (void *__start, size_t __size, int __prot,
size_t __pgoff, int __flags) __attribute__ ((__nothrow__ , __leaf__));
extern int shm_open (const char *__name, int __oflag, mode_t __mode);
extern int shm_unlink (const char *__name);
-------------------------------------------------------------------------------------------------------
FYI:
On the platform:
- Ubuntu 22.10 kinetic kudu
- gcc 12.2.0
- same 6.2-rc2
, MADV_PAGEOUT is also defined in bits/mmap-linux.h, so the compile passes.
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm# grep MADV_PAGEOUT -r /usr/include
/usr/include/asm-generic/mman-common.h:#define MADV_PAGEOUT 21 /* reclaim these pages */
/usr/include/x86_64-linux-gnu/bits/mman-linux.h:# define MADV_PAGEOUT 21 /* Reclaim these pages. */
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm# grep MADV_PAGEOUT -r ../../../../usr/include
../../../../usr/include/asm-generic/mman-common.h:#define MADV_PAGEOUT 21 /* reclaim these pages */
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm#
However, mman-common.h from ../../../../usr/include/asm-generic/mman-common.h is also not included,
as of "gcc -E", but only bits/mman-linux.h:
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm# gcc -Wall -E -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../.. -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -isystem /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -no-pie cow.c | grep mman-common.h
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm# gcc -Wall -E -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../.. -I /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -isystem /home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/../../../usr/include -no-pie cow.c | grep mman-linux.h
# 1 "/usr/include/x86_64-linux-gnu/bits/mman-linux.h" 1 3 4
# 119 "/usr/include/x86_64-linux-gnu/bits/mman-linux.h" 3 4
# 120 "/usr/include/x86_64-linux-gnu/bits/mman-linux.h" 2 3 4
root@marvin-IdeaPad-3-15ITL6:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/vm#
I hope this is enough information for you to debug the issue.
I am standing by for any additional diagnostics needed.
Regards,
Mirsad
--
Mirsad Goran Todorovac
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
The European Union