[PATCH] Limit perf data buffer during feature checking

[Jeff Law]

On 12/9/20 5:45 AM, Ilya Leoshkevich via Gcc-patches wrote:
> Bootstrapped and regtested on x86_64-redhat-linux.  Ok for master?
>
> Commit 2ead1ab91123 ("Limit perf data buffer during profiling") added
> -m8 to perf invocations during running tests, but the same problem
> exists for checking whether perf is working in the first place.
>
> gcc/testsuite/ChangeLog:
>
> 2020-12-08  Ilya Leoshkevich  <iii@linux.ibm.com>
>
> 	* lib/target-supports.exp(check_profiling_available): Limit
> 	perf data buffer.
OK
jeff