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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/vppinfra/unix-misc.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/vppinfra/unix-misc.c')
| -rw-r--r-- | src/vppinfra/unix-misc.c | 47 |
1 files changed, 45 insertions, 2 deletions
diff --git a/src/vppinfra/unix-misc.c b/src/vppinfra/unix-misc.c index 623b2e98555..e0591ff4604 100644 --- a/src/vppinfra/unix-misc.c +++ b/src/vppinfra/unix-misc.c @@ -268,7 +268,7 @@ __clib_export clib_bitmap_t * os_get_online_cpu_core_bitmap () { #if __linux__ - return clib_sysfs_list_to_bitmap ("/sys/devices/system/cpu/online"); + return clib_sysfs_read_bitmap ("/sys/devices/system/cpu/online"); #else return 0; #endif @@ -278,11 +278,54 @@ __clib_export clib_bitmap_t * os_get_online_cpu_node_bitmap () { #if __linux__ - return clib_sysfs_list_to_bitmap ("/sys/devices/system/node/online"); + return clib_sysfs_read_bitmap ("/sys/devices/system/node/online"); #else return 0; #endif } +__clib_export clib_bitmap_t * +os_get_cpu_on_node_bitmap (int node) +{ +#if __linux__ + return clib_sysfs_read_bitmap ("/sys/devices/system/node/node%u/cpulist", + node); +#else + return 0; +#endif +} + +__clib_export clib_bitmap_t * +os_get_cpu_with_memory_bitmap () +{ +#if __linux__ + return clib_sysfs_read_bitmap ("/sys/devices/system/node/has_memory"); +#else + return 0; +#endif +} + +__clib_export int +os_get_cpu_phys_core_id (int cpu_id) +{ +#if __linux + int core_id = -1; + clib_error_t *err; + u8 *p; + + p = + format (0, "/sys/devices/system/cpu/cpu%u/topology/core_id%c", cpu_id, 0); + err = clib_sysfs_read ((char *) p, "%d", &core_id); + vec_free (p); + if (err) + { + clib_error_free (err); + return -1; + } + return core_id; +#else + return -1; +#endif +} /* * fd.io coding-style-patch-verification: ON |