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vppinfra: add os_get_online_cpu_core() and os_get_online_cpu_node()

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Type: improvement
Change-Id: I6f99f09c7724ce656a4f41a1d5f9c88d74c00faf
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2024-02-29 16:14:27 +01:00
committed by Beno�t Ganne
parent 2921e02341
commit 4b6614030f
6 changed files with 47 additions and 22 deletions
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8
src/vlib/linux/pci.c
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@ -38,6 +38,8 @@
*/
#include <vppinfra/linux/sysfs.h>
#include <vppinfra/bitmap.h>
#include <vppinfra/unix.h>
#include <vlib/vlib.h>
#include <vlib/pci/pci.h>
@ -257,11 +259,7 @@ vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr,
}
if (di->numa_node == -1)
{
/* if '/sys/bus/pci/devices/<device id>/numa_node' returns -1 and
it is a SMP system, set numa_node to 0. */
if ((err = clib_sysfs_read ("/sys/devices/system/node/online", "%U",
unformat_bitmap_list, &bmp)))
clib_error_free (err);
bmp = os_get_online_cpu_node_bitmap ();
if (clib_bitmap_count_set_bits (bmp) == 1)
di->numa_node = 0;
}