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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-27 14:05:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-27 14:05:02 -0700
commit365aa51e11cc537ac39a96f765ad8e7511aa93ff (patch)
treef47c7455d06be57bb63835f53bed6c2df1bed0a7 /drivers/staging/ktap/scripts/basic/function_time.kp
parent9908b4f32f91aafa86239dd092e9e5540e8615e0 (diff)
staging: ktap: remove code from tree
ktap should be merged through the "proper" place in the kernel tree, in the perf tool, not as a stand-alone kernel module in staging. So remove it from here for now so that it can be merged correctly later. Reported-by: Ingo Molnar <mingo@kernel.org> Cc: Jovi Zhangwei <jovi.zhangwei@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ktap/scripts/basic/function_time.kp')
-rw-r--r--drivers/staging/ktap/scripts/basic/function_time.kp57
1 files changed, 0 insertions, 57 deletions
diff --git a/drivers/staging/ktap/scripts/basic/function_time.kp b/drivers/staging/ktap/scripts/basic/function_time.kp
deleted file mode 100644
index e7859a396d95..000000000000
--- a/drivers/staging/ktap/scripts/basic/function_time.kp
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/bin/env ktap
-
-#Demo for thread-local variable
-#
-#Note this kind of function time tracing already handled concurrent issue,
-#but not aware on the recursion problem, user need to aware this limitation,
-#so don't use this script to trace function which could be called recursive.
-
-self = {}
-count_max = 0
-count_min = 0
-count_num = 0
-total_time = 0
-
-printf("measure time(us) of function vfs_read\n");
-
-trace probe:vfs_read {
- if (execname() == "ktap") {
- return
- }
-
- self[tid()] = gettimeofday_us()
-}
-
-trace probe:vfs_read%return {
- if (execname() == "ktap") {
- return
- }
-
- if (self[tid()] == nil) {
- return
- }
-
- local durtion = gettimeofday_us() - self[tid()]
- if (durtion > count_max) {
- count_max = durtion
- }
- local min = count_min
- if (min == 0 || durtion < min) {
- count_min = durtion
- }
-
- count_num = count_num + 1
- total_time = total_time + durtion
-
- self[tid()] = nil
-}
-
-trace_end {
- printf("avg\tmax\tmin\n");
- printf("-------------------\n")
-
- printf("%d\t%d\t%d\n", total_time/count_num,
- count_max, count_min)
-}
-
-