tracing: Restructure traceclockglobal() to never block
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.3 by commit 2a1bd74b8186d7938bf004f5603f25b84785f63e, it was introduced in version v5.10 by commit b02414c8f045ab3b9afc816c3735bc98c5c3d262. For more details please see the references link.