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-rwxr-xr-xtools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py15
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py b/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
index 0b24dd9d01ff..29f50d4cfea0 100755
--- a/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
+++ b/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
@@ -411,6 +411,16 @@ def set_trace_buffer_size():
print('IO error setting trace buffer size ')
quit()
+def free_trace_buffer():
+ """ Free the trace buffer memory """
+
+ try:
+ open('/sys/kernel/debug/tracing/buffer_size_kb'
+ , 'w').write("1")
+ except:
+ print('IO error setting trace buffer size ')
+ quit()
+
def read_trace_data(filename):
""" Read and parse trace data """
@@ -583,4 +593,9 @@ for root, dirs, files in os.walk('.'):
for f in files:
fix_ownership(f)
+clear_trace_file()
+# Free the memory
+if interval:
+ free_trace_buffer()
+
os.chdir('../../')