timer: fix TSC frequency by not reading /proc/cpuinfo

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal_timer.c

diff --git a/lib/librte_eal/linuxapp/eal/eal_timer.c b/lib/librte_eal/linuxapp/eal/eal_timer.c
index 1d10457..64566d1 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_timer.c
+++ b/lib/librte_eal/linuxapp/eal/eal_timer.c
@@ -278,35 +278,6 @@ check_tsc_flags(void)
        fclose(stream);
 }
 
-static int
-set_tsc_freq_from_cpuinfo(void)
-{
-       char line[256];
-       FILE *stream;
-       double dmhz;
-
-       stream = fopen("/proc/cpuinfo", "r");
-       if (!stream) {
-               RTE_LOG(WARNING, EAL, "WARNING: Unable to open /proc/cpuinfo\n");
-               return -1;
-       }
-
-       while (fgets(line, sizeof line, stream)) {
-               if (sscanf(line, "cpu MHz\t: %lf", &dmhz) == 1) {
-                       eal_tsc_resolution_hz = (uint64_t)(dmhz * 1000000UL);
-                       break;
-               }
-       }
-
-       fclose(stream);
-
-       if (!eal_tsc_resolution_hz) {
-               RTE_LOG(WARNING, EAL, "WARNING: Cannot read CPU clock from cpuinfo\n");
-               return -1;
-       }
-       return 0;
-}
-
 static int
 set_tsc_freq_from_clock(void)
 {
@@ -355,9 +326,8 @@ set_tsc_freq_fallback(void)
 static void
 set_tsc_freq(void)
 {
-       if (set_tsc_freq_from_cpuinfo() < 0 &&
-           set_tsc_freq_from_clock() < 0)
-           set_tsc_freq_fallback();
+       if (set_tsc_freq_from_clock() < 0)
+               set_tsc_freq_fallback();
 
        RTE_LOG(INFO, EAL, "TSC frequency is ~%"PRIu64" KHz\n",
                        eal_tsc_resolution_hz/1000);