Re: [RFC v2] perf/core: Fixes hung issue on perf stat command during cpu hotplug

* Kajol Jain [2020-08-26 20:24:11]: > Commit 2ed6edd33a21 ("perf: Add cond_resched() to task_function_call()") > added assignment of ret value as -EAGAIN in case function > call to 'smp_call_function_single' fails. > For non-zero ret value, it did > 'ret = !ret ? data.ret : -EAGAIN;', which

Re: [RFC v2] perf/core: Fixes hung issue on perf stat command during cpu hotplug

Hi - On 8/26/20 10:54 AM, Kajol Jain wrote: Commit 2ed6edd33a21 ("perf: Add cond_resched() to task_function_call()") added assignment of ret value as -EAGAIN in case function call to 'smp_call_function_single' fails. For non-zero ret value, it did 'ret = !ret ? data.ret : -EAGAIN;', which

[RFC v2] perf/core: Fixes hung issue on perf stat command during cpu hotplug

Commit 2ed6edd33a21 ("perf: Add cond_resched() to task_function_call()") added assignment of ret value as -EAGAIN in case function call to 'smp_call_function_single' fails. For non-zero ret value, it did 'ret = !ret ? data.ret : -EAGAIN;', which always assign -EAGAIN to ret and make second if