๐ [$] Four short stories about preempt_count()
๐ก Newskategorie: Linux Tipps
๐ Quelle: lwn.net
The discussion started out as a straightforward patch set from Thomas Gleixner making a minor change to how preemption counting is handled. The resulting discussion quickly spread out to cover a number of issues relevant to core-kernel development in surprisingly few messages; each of those topics merits a quick look, starting with how the preemption counter itself works. Sometimes a simple count turns out to not be as simple as it seems. ...