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| author |   Damjan Marion <damarion@cisco.com> | 2024-02-12 19:44:58 +0000 |
|---|---|---|
| committer |   Mohammed HAWARI <momohawari@gmail.com> | 2024-03-18 16:01:35 +0000 |
| commit | 3eb6cbec50a5cbe4c3465d60ba6aea7bf2845cd1 (patch) | |
| tree | 0f45044087400911e213048c1967ac96a9f8ea29 /src/vlib/threads.c | |
| parent | 8799bf6ca6b78321049bbc397256dd8b3884d829 (diff) | |
vppinfra: os agnostic api for getting CPU information
Avoid direct sysfs reads when possible...
Type: improvement
Change-Id: I2b84cd18f3da47925d068951f24b79b5b6e20bb1
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vlib/threads.c')
| -rw-r--r-- | src/vlib/threads.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/src/vlib/threads.c b/src/vlib/threads.c index f0cb69b3400..713e1927d1f 100644 --- a/src/vlib/threads.c +++ b/src/vlib/threads.c @@ -19,7 +19,6 @@ #include <vppinfra/format.h> #include <vppinfra/time_range.h> #include <vppinfra/interrupt.h> -#include <vppinfra/linux/sysfs.h> #include <vppinfra/bitmap.h> #include <vppinfra/unix.h> #include <vlib/vlib.h> @@ -427,30 +426,21 @@ vlib_worker_thread_bootstrap_fn (void *arg) 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); + int node, core_id = -1, numa_id = -1; + core_id = os_get_cpu_phys_core_id (cpu_id); nbmp = os_get_online_cpu_node_bitmap (); + 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); + cbmp = os_get_cpu_on_node_bitmap (node); + if (clib_bitmap_get (cbmp, cpu_id)) + numa_id = node; + vec_reset_length (cbmp); } vec_free (nbmp); vec_free (cbmp); - vec_free (p); w->core_id = core_id; w->numa_id = numa_id; |