I tried to build tools/test/memblock and got such message: /usr/bin/ld: slab.o: in function `kmalloc': slab.c:(.text+0x2b): undefined reference to `uatomic_inc' /usr/bin/ld: slab.o: in function `kfree': slab.c:(.text+0x97): undefined reference to `uatomic_dec' collect2: error: ld returned 1 exit status I could find any definition or inplememtation of uatomic_inc/uatomic_dec in anywhere of the code base. So I use atomic_inc/atomic_dec_and_test to replace like other tests underneath tools/test, it works. Signed-off-by: Song Chen <chensong_2000@xxxxxx> --- tools/lib/slab.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/lib/slab.c b/tools/lib/slab.c index 959997fb0652..8a5a8d536e35 100644 --- a/tools/lib/slab.c +++ b/tools/lib/slab.c @@ -3,7 +3,7 @@ #include <stdio.h> #include <string.h> -#include <urcu/uatomic.h> +#include <linux/atomic.h> #include <linux/slab.h> #include <malloc.h> #include <linux/gfp.h> @@ -19,7 +19,7 @@ void *kmalloc(size_t size, gfp_t gfp) return NULL; ret = malloc(size); - uatomic_inc(&kmalloc_nr_allocated); + atomic_inc(&kmalloc_nr_allocated); if (kmalloc_verbose) printf("Allocating %p from malloc\n", ret); if (gfp & __GFP_ZERO) @@ -31,7 +31,7 @@ void kfree(void *p) { if (!p) return; - uatomic_dec(&kmalloc_nr_allocated); + atomic_dec_and_test(&kmalloc_nr_allocated); if (kmalloc_verbose) printf("Freeing %p to malloc\n", p); free(p); -- 2.25.1