aboutsummaryrefslogtreecommitdiffstats
path: root/lib/librte_eal/common/arch/ppc_64/rte_cycles.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/librte_eal/common/arch/ppc_64/rte_cycles.c')
-rw-r--r--lib/librte_eal/common/arch/ppc_64/rte_cycles.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/librte_eal/common/arch/ppc_64/rte_cycles.c b/lib/librte_eal/common/arch/ppc_64/rte_cycles.c
new file mode 100644
index 00000000..69a9f747
--- /dev/null
+++ b/lib/librte_eal/common/arch/ppc_64/rte_cycles.c
@@ -0,0 +1,52 @@
+/*
+ * BSD LICENSE
+ *
+ * Copyright (C) IBM Corporation 2014.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of IBM Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <rte_lcore.h>
+#include <rte_log.h>
+#include "eal_filesystem.h"
+#include "eal_private.h"
+
+static const char sys_cpu_dir[] = "/sys/devices/system/cpu";
+
+uint64_t
+get_tsc_freq_arch(void)
+{
+ unsigned long cpu_hz;
+ char path[PATH_MAX];
+
+ snprintf(path, sizeof(path), "%s/cpu%d/cpufreq/cpuinfo_cur_freq",
+ sys_cpu_dir, rte_get_master_lcore());
+ if (eal_parse_sysfs_value(path, &cpu_hz) < 0)
+ RTE_LOG(WARNING, EAL, "Unable to parse %s\n", path);
+
+ return cpu_hz*1000;
+}