Messages in this thread | | | Date | Thu, 28 Nov 2019 15:04:25 +0000 | From | Changbin Du <> | Subject | Re: [PATCH v7 0/2] perf: add support for logging debug messages to file |
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On Tue, Nov 26, 2019 at 12:19:11PM -0800, Andi Kleen wrote: > Changbin Du <changbin.du@gmail.com> writes: > > > When in TUI mode, it is impossible to show all the debug messages to > > console. This make it hard to debug perf issues using debug messages. > > This patch adds support for logging debug messages to file to resolve > > this problem. > > This was already solved in > > commit f78eaef0e0493f6068777a246b9c4d9d5cf2b7aa > Author: Andi Kleen <ak@linux.intel.com> > Date: Fri Nov 21 13:38:00 2014 -0800 > > perf tools: Allow to force redirect pr_debug to stderr. > > When debugging the tui browser I find it useful to redirect the > debug > log into a file. Currently it's always forced to the message > line. > > Add an option to force it to stderr. Then it can be easily > redirected. > > You can do > > perf report --debug stderr 2> file ... > Yes, this is a good alternate approach with existing code. I still think a new option 'file' is not bad. And later maybe we can ouput debug messages to file only while errors ouput to both.
> -Andi
-- Cheers, Changbin Du
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