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authorZhenyu Wang <zhenyuw@linux.intel.com>2020-10-30 06:48:17 +0300
committerZhenyu Wang <zhenyuw@linux.intel.com>2020-10-30 06:48:17 +0300
commit4a95857a875e887cc958c92fe9d2cde6184d2ec0 (patch)
tree8d67b681d582ba7ee11a359be7af82ed77bd6620 /tools/perf/scripts/python/futex-contention.py
parentbaec997285e63ad3e03d8b8d45e14776cd737f62 (diff)
parent61334ed227a5852100115180f5535b1396ed5227 (diff)
downloadlinux-4a95857a875e887cc958c92fe9d2cde6184d2ec0.tar.xz
Merge tag 'drm-intel-fixes-2020-10-29' into gvt-fixes
Backmerge for 5.10-rc1 to apply one extra APL fix. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
-rw-r--r--tools/perf/scripts/python/futex-contention.py51
1 files changed, 28 insertions, 23 deletions
diff --git a/tools/perf/scripts/python/futex-contention.py b/tools/perf/scripts/python/futex-contention.py
index 0c4841acf75d..7e884d46f920 100644
--- a/tools/perf/scripts/python/futex-contention.py
+++ b/tools/perf/scripts/python/futex-contention.py
@@ -12,41 +12,46 @@
from __future__ import print_function
-import os, sys
-sys.path.append(os.environ['PERF_EXEC_PATH'] + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
+import os
+import sys
+sys.path.append(os.environ['PERF_EXEC_PATH'] +
+ '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
from Util import *
process_names = {}
thread_thislock = {}
thread_blocktime = {}
-lock_waits = {} # long-lived stats on (tid,lock) blockage elapsed time
-process_names = {} # long-lived pid-to-execname mapping
+lock_waits = {} # long-lived stats on (tid,lock) blockage elapsed time
+process_names = {} # long-lived pid-to-execname mapping
+
def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
- nr, uaddr, op, val, utime, uaddr2, val3):
- cmd = op & FUTEX_CMD_MASK
- if cmd != FUTEX_WAIT:
- return # we don't care about originators of WAKE events
+ nr, uaddr, op, val, utime, uaddr2, val3):
+ cmd = op & FUTEX_CMD_MASK
+ if cmd != FUTEX_WAIT:
+ return # we don't care about originators of WAKE events
+
+ process_names[tid] = comm
+ thread_thislock[tid] = uaddr
+ thread_blocktime[tid] = nsecs(s, ns)
- process_names[tid] = comm
- thread_thislock[tid] = uaddr
- thread_blocktime[tid] = nsecs(s, ns)
def syscalls__sys_exit_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
- nr, ret):
- if tid in thread_blocktime:
- elapsed = nsecs(s, ns) - thread_blocktime[tid]
- add_stats(lock_waits, (tid, thread_thislock[tid]), elapsed)
- del thread_blocktime[tid]
- del thread_thislock[tid]
+ nr, ret):
+ if tid in thread_blocktime:
+ elapsed = nsecs(s, ns) - thread_blocktime[tid]
+ add_stats(lock_waits, (tid, thread_thislock[tid]), elapsed)
+ del thread_blocktime[tid]
+ del thread_thislock[tid]
+
def trace_begin():
- print("Press control+C to stop and show the summary")
+ print("Press control+C to stop and show the summary")
-def trace_end():
- for (tid, lock) in lock_waits:
- min, max, avg, count = lock_waits[tid, lock]
- print("%s[%d] lock %x contended %d times, %d avg ns" %
- (process_names[tid], tid, lock, count, avg))
+def trace_end():
+ for (tid, lock) in lock_waits:
+ min, max, avg, count = lock_waits[tid, lock]
+ print("%s[%d] lock %x contended %d times, %d avg ns [max: %d ns, min %d ns]" %
+ (process_names[tid], tid, lock, count, avg, max, min))