diff options
Diffstat (limited to 'drivers/staging/ktap/scripts/profiling/function_profiler.kp')
| -rw-r--r-- | drivers/staging/ktap/scripts/profiling/function_profiler.kp | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/drivers/staging/ktap/scripts/profiling/function_profiler.kp b/drivers/staging/ktap/scripts/profiling/function_profiler.kp deleted file mode 100644 index 589017fe83b4..000000000000 --- a/drivers/staging/ktap/scripts/profiling/function_profiler.kp +++ /dev/null @@ -1,41 +0,0 @@ -#!/usr/bin/env ktap - -#kernel function profile -#You can use this script to know what function is called frequently, -#without enable CONFIG_FUNCTION_PROFILER in kernel. - -s = aggr_table() - -trace ftrace:function { - s[arg1] = count() -} - -trace_end { - histogram(s) -} - -#sample output -#^C -# value ------------- Distribution ------------- count -# sub_preempt_count | @@@@@ 34904 -# add_preempt_count | @@@@@ 33435 -# nsecs_to_jiffies64 | @@@ 19919 -# irqtime_account_process_tick... | @ 9970 -# account_idle_time | @ 9880 -# _raw_spin_lock | 5100 -# _raw_spin_unlock | 5021 -# _raw_spin_unlock_irqrestore | 4235 -# _raw_spin_lock_irqsave | 4232 -# __rcu_read_lock | 3373 -# __rcu_read_unlock | 3373 -# lookup_address | 2392 -# pfn_range_is_mapped | 2384 -# update_cfs_rq_blocked_load | 1983 -# idle_cpu | 1808 -# ktime_get | 1394 -# _raw_spin_unlock_irq | 1270 -# _raw_spin_lock_irq | 1091 -# update_curr | 950 -# irqtime_account_irq | 950 -# ... | -# |