Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth via sysctl

[David Ahern]

On 4/26/16 10:33 AM, Arnaldo Carvalho de Melo wrote:
> So, for completeness, further testing it to see how far it goes on a 8GB
> machine I got:
>
> [root@emilia ~]# echo 131100 > /proc/sys/kernel/perf_event_max_stack
> [root@emilia ~]# perf record -g ls
> Error:
> The sys_perf_event_open() syscall returned with 12 (Cannot allocate memory) for event (cycles).
> /bin/dmesg may provide additional information.
> No CONFIG_PERF_EVENTS=y kernel support configured?

I thought we fixed up the last line to not display for errors like this.

How about adding ENOMEM case to perf_evsel__open_strerror?