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authorXiaoming Jiang <jiangxiaoming@outlook.com>2024-02-22 21:24:20 +0800
committerFan Zhang <fanzhang.oss@gmail.com>2024-07-18 08:46:14 +0000
commit04da32426018a338a7585bc6a412c78847e5eef8 (patch)
tree3ff2e227f6c7389aaf8fdcf6f14a5c5c82e3b288 /src/vppinfra/time.c
parent357291142bf76963e7bdbaed5ebd912254c1e0ad (diff)
vppinfra: fix cpu freq init error if cpu support aperfmperf
After linux-v4.15, 'cpu MHz' in /proc/cpuinfo is CPU real frequency on x86 if cpu support aperfmperf flags more see linux commit: https://github.com/torvalds/linux/commit/7d5905dc14a87805a59f3c5bf70173aac2bb18f8 Type: fix Change-Id: Ib655a9a1c519104142120b343cd8ddbe0b6e50e6 Signed-off-by: Xiaoming Jiang <jiangxiaoming@outlook.com>
Diffstat (limited to 'src/vppinfra/time.c')
-rw-r--r--src/vppinfra/time.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/vppinfra/time.c b/src/vppinfra/time.c
index 5a6aaf182e4..f1736499a0a 100644
--- a/src/vppinfra/time.c
+++ b/src/vppinfra/time.c
@@ -76,8 +76,11 @@ clock_frequency_from_proc_filesystem (void)
f64 ppc_timebase = 0; /* warnings be gone */
unformat_input_t input;
-/* $$$$ aarch64 kernel doesn't report "cpu MHz" */
-#if defined(__aarch64__)
+#if defined(__x86_64__)
+ if (clib_cpu_supports_aperfmperf ())
+ return 0.0;
+#elif defined(__aarch64__)
+ /* $$$$ aarch64 kernel doesn't report "cpu MHz" */
return 0.0;
#endif