vppinfra: send minimal needed mask to the set_mempolicy syscall
Type: fix
fixes:
#include <vppinfra/mem.h>
#include <vppinfra/lock.h>
#include <vppinfra/time.h>
+#include <vppinfra/bitmap.h>
#include <vppinfra/format.h>
#include <vppinfra/clib_error.h>
#include <vppinfra/linux/sysfs.h>
@@ -608,8 +609,8 @@ __clib_export int
clib_mem_set_numa_affinity (u8 numa_node, int force)
{
clib_mem_main_t *mm = &clib_mem_main;
- long unsigned int mask[16] = { 0 };
- int mask_len = sizeof (mask) * 8 + 1;
+ clib_bitmap_t *bmp = 0;
+ int rv;
/* no numa support */
if (mm->numa_node_bitmap == 0)
@@ -625,21 +626,23 @@ clib_mem_set_numa_affinity (u8 numa_node, int force)
return 0;
}
- mask[0] = 1 << numa_node;
+ bmp = clib_bitmap_set (bmp, numa_node, 1);
- if (syscall (__NR_set_mempolicy, force ? MPOL_BIND : MPOL_PREFERRED, mask,
- mask_len))
- goto error;
+ rv = syscall (__NR_set_mempolicy, force ? MPOL_BIND : MPOL_PREFERRED, bmp,
+ vec_len (bmp) * sizeof (bmp[0] * 8) + 1);
+ clib_bitmap_free (bmp);
vec_reset_length (mm->error);
- return 0;
-error:
- vec_reset_length (mm->error);
+ if (rv)
+ {
mm->error = clib_error_return_unix (mm->error, (char *) __func__);
return CLIB_MEM_ERROR;
}
+ return 0;
+}
+
__clib_export int
clib_mem_set_default_numa_affinity ()
{
