[PATCH v4 10/10] bootconfig/tracing/ktest: Update ktest example for boot-time tracing

Masami Hiramatsu
2021-08-10T02:08:27Z

Update ktest example for the boot-time tracing with histogram
options. Note that since the histogram option uses "trace()" action
instead of "EVENT()", this updates the matching pattern too.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
.../ktest/examples/bootconfigs/boottrace.bconf | 20 +++++++++++++++-----
.../ktest/examples/bootconfigs/verify-boottrace.sh | 2 +-
2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/tools/testing/ktest/examples/bootconfigs/boottrace.bconf b/tools/testing/ktest/examples/bootconfigs/boottrace.bconf
index 9db64ec589d5..7aa706cccb3b 100644
--- a/tools/testing/ktest/examples/bootconfigs/boottrace.bconf
+++ b/tools/testing/ktest/examples/bootconfigs/boottrace.bconf
@@ -10,13 +10,23 @@ ftrace.event {
}
synthetic.initcall_latency {
fields = "unsigned long func", "u64 lat"
- actions = "hist:keys=func.sym,lat:vals=lat:sort=lat"
+ hist {
+ keys = func.sym,lat
+ values = lat
+ sort = lat
+ }
}
- initcall.initcall_start {
- actions = "hist:keys=func:ts0=common_timestamp.usecs"
+ initcall.initcall_start.hist {
+ keys = func;
+ var.ts0 = common_timestamp.usecs
}
- initcall.initcall_finish {
- actions = "hist:keys=func:lat=common_timestamp.usecs-$ts0:onmatch(initcall.initcall_start).initcall_latency(func,$lat)"
+ initcall.initcall_finish.hist {
+ keys = func
+ var.lat = common_timestamp.usecs - $ts0
+ onmatch {
+ event = initcall.initcall_start
+ trace = initcall_latency, func, $lat
+ }
}
}

diff --git a/tools/testing/ktest/examples/bootconfigs/verify-boottrace.sh b/tools/testing/ktest/examples/bootconfigs/verify-boottrace.sh
index f271940ce7fb..233e95cfcf20 100755
--- a/tools/testing/ktest/examples/bootconfigs/verify-boottrace.sh
+++ b/tools/testing/ktest/examples/bootconfigs/verify-boottrace.sh
@@ -58,7 +58,7 @@ compare_file_partial "events/synthetic/initcall_latency/enable" "0"
compare_file_partial "events/initcall/initcall_start/trigger" "hist:keys=func:vals=hitcount:ts0=common_timestamp.usecs"
compare_file_partial "events/initcall/initcall_start/enable" "1"

-compare_file_partial "events/initcall/initcall_finish/trigger" 'hist:keys=func:vals=hitcount:lat=common_timestamp.usecs-\$ts0:sort=hitcount:size=2048:clock=global:onmatch(initcall.initcall_start).initcall_latency(func,\$lat)'
+compare_file_partial "events/initcall/initcall_finish/trigger" 'hist:keys=func:vals=hitcount:lat=common_timestamp.usecs-\$ts0:sort=hitcount:size=2048:clock=global:onmatch(initcall.initcall_start).trace(initcall_latency,func,\$lat)'
compare_file_partial "events/initcall/initcall_finish/enable" "1"

compare_file "instances/foo/current_tracer" "function"