New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/24578#issuecomment-684177274

Comment:
We'll need something like this https://gitlab.alpinelinux.org/alpine/aports/-/commit/6158b4c59fee5d9dee4cbe8e311cb48717dff583 for musl 1.2.1.

We haven't shipped musl 1.2.1 yet, just FYI

---
The main change is:
```diff
+diff --git a/services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc ./services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc
+index a85c0ea..715aa1e 100644
+--- a/services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc
 +++ ./services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc
-@@ -88,10 +88,10 @@
+@@ -93,11 +93,11 @@ ResultExpr RendererProcessPolicy::EvaluateSyscall(int sysno) const {
      case __NR_sysinfo:
      case __NR_times:
      case __NR_uname:
@@ -139,20 +167,9 @@
 -    case __NR_sched_getaffinity:
      case __NR_sched_getparam:
      case __NR_sched_getscheduler:
+     case __NR_sched_setscheduler:
 +      return Allow();
 +    case __NR_sched_getaffinity:
-     case __NR_sched_setscheduler:
        return sandbox::RestrictSchedTarget(GetPolicyPid(), sysno);
      case __NR_prlimit64:
```