From: Andreas Pehrson <apehrson@mozilla.com>
Date: Wed, 8 Feb 2023 08:01:00 +0000
Subject: Bug 1814692 - Don't attempt realtime scheduling rtc::PlatformThreads.
 r=webrtc-reviewers,bwc

Differential Revision: https://phabricator.services.mozilla.com/D169036
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/9e64a965e26c8379261466e5273c3b383164b2c7
---
 rtc_base/platform_thread.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rtc_base/platform_thread.cc b/rtc_base/platform_thread.cc
index 71a9f1b224..bcbb784b97 100644
--- a/rtc_base/platform_thread.cc
+++ b/rtc_base/platform_thread.cc
@@ -50,6 +50,9 @@ bool SetPriority(ThreadPriority priority) {
   // TODO(tommi): Switch to the same mechanism as Chromium uses for changing
   // thread priorities.
   return true;
+#elif defined(WEBRTC_MOZILLA_BUILD) && defined(WEBRTC_LINUX)
+  // Only realtime audio uses realtime scheduling in Firefox.
+  return true;
 #else
   const int policy = SCHED_FIFO;
   const int min_prio = sched_get_priority_min(policy);