On Tue, Feb 19, 2019 at 07:38:08PM +0100, Jonas Rabenstein wrote:
> Hi,
> sample__fprintf_callchain currently did not use the already available
> code to get the symbols of an inlined function if such information is
> available in a dso. This patchset adds the required logic to add
> appropriate lines.
>
> As I am quite new to the code base of perf I am not sure how to test
> that changeset in a correct way. At least the codes builds and the tools
> that make use of sample__fprintf_callchain (perf-script, perf-trace and
> perf-sched as far as I can see) did not fail to run - also I did not get
> into the details of perf-trace and perf-sched as I have never used them
> before.
you could provide some examples that shows what u changed
I can see your changes change the perf script callchains,
displaying less or different callchains:
--- old 2019-02-20 15:29:34.872312007 +0100
+++ new 2019-02-20 15:30:47.784725456 +0100
@@ -23,10 +23,9 @@ yes 11807 203482.590491: 246238 cycl
40 [unknown] ([unknown])
yes 11807 203482.590654: 534592 cycles:uppp:
- 7f83e3c7fd0c _dl_addr+0x11c (/usr/lib64/libc-2.27.so)
+ 7f83e3c7fd0c __GI__dl_addr+0x11c (inlined)
yes 11807 203482.592371: 455976 cycles:uppp:
- 55ddec8a3f6e [unknown] (/usr/bin/yes)
a790a790a790a79 [unknown] ([unknown])
yes 11807 203482.594176: 326514 cycles:uppp:
@@ -38,11 +37,9 @@ yes 11807 203482.595464: 262867 cycl
a790a790a790a79 [unknown] ([unknown])
yes 11807 203482.596502: 214762 cycles:uppp:
- 55ddec8a3f6e [unknown] (/usr/bin/yes)
a790a790a790a79 [unknown] ([unknown])
>
> Another thing I am not sure how to deal with are some warnings of
> checkpatch.pl due to the 80 character line limit. Due to the long
> function names in use the current implementation already exceeded that
> limit in the same spots by even more characters as I have taken the
> inner loop and put it into a separate function.
don't worry much about the long lines warnings
>
> I hope to expand my work to perf-report but thought it might be usefull
> to get already early feedback on those patches.
yep, good idea
thanks,
jirka
