diff options
| author |   Lijian.Zhang <Lijian.Zhang@arm.com> | 2020-02-14 15:16:49 +0800 |
|---|---|---|
| committer | Lijian.Zhang <Lijian.Zhang@arm.com> | 2020-02-17 17:05:17 +0800 |
| commit | 4fbb9daa90b53e0abaa060cf6db7762e708ce5b6 (patch) | |
| tree | 73f34e6e31d095cff79c4d785e1c41dbec2ec426 /src | |
| parent | 2d59f59fb9551aa1f5862529c08376e245867d18 (diff) | |
vlib: fix code of getting numa node with specific cpu_id
Use below sysfs files to check which numa node a specific cpu_id belongs to.
/sys/devices/system/node/online
/sys/devices/system/node/node0/cpulist
/sys/devices/system/node/node1/cpulist
Type: fix
Change-Id: I124b80b1fd4a20dd7bd76f0ae27d5ab23a3a8ff1
Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/vlib/threads.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/src/vlib/threads.c b/src/vlib/threads.c index 1ce4dc15613..3f090542118 100644 --- a/src/vlib/threads.c +++ b/src/vlib/threads.c @@ -598,15 +598,30 @@ void vlib_get_thread_core_numa (vlib_worker_thread_t * w, unsigned cpu_id) { const char *sys_cpu_path = "/sys/devices/system/cpu/cpu"; + const char *sys_node_path = "/sys/devices/system/node/node"; + clib_bitmap_t *nbmp = 0, *cbmp = 0; + u32 node; u8 *p = 0; int core_id = -1, numa_id = -1; p = format (p, "%s%u/topology/core_id%c", sys_cpu_path, cpu_id, 0); clib_sysfs_read ((char *) p, "%d", &core_id); vec_reset_length (p); - p = format (p, "%s%u/topology/physical_package_id%c", sys_cpu_path, - cpu_id, 0); - clib_sysfs_read ((char *) p, "%d", &numa_id); + + /* *INDENT-OFF* */ + clib_sysfs_read ("/sys/devices/system/node/online", "%U", + unformat_bitmap_list, &nbmp); + clib_bitmap_foreach (node, nbmp, ({ + p = format (p, "%s%u/cpulist%c", sys_node_path, node, 0); + clib_sysfs_read ((char *) p, "%U", unformat_bitmap_list, &cbmp); + if (clib_bitmap_get (cbmp, cpu_id)) + numa_id = node; + vec_reset_length (cbmp); + vec_reset_length (p); + })); + /* *INDENT-ON* */ + vec_free (nbmp); + vec_free (cbmp); vec_free (p); w->core_id = core_id; |