On Wed, Oct 25, 2023 at 5:33 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > On Tue, Oct 24 2023 at 06:46, Suren Baghdasaryan wrote: > > From: Kent Overstreet <kent.overstreet@xxxxxxxxx> > > > > This avoids a circular header dependency in an upcoming patch by only > > making hrtimer.h depend on percpu-defs.h > > What's the actual dependency problem? Sorry for the delay. When we instrument per-cpu allocations in [1] we need to include sched.h in percpu.h to be able to use alloc_tag_save(). sched.h includes hrtimer.h. So, without this change we end up with a circular inclusion: percpu.h->sched.h->hrtimer.h->percpu.h [1] https://lore.kernel.org/all/20231024134637.3120277-32-surenb@xxxxxxxxxx/ >
