> On Oct 2, 2023, at 4:47 PM, David Vernet <void@xxxxxxxxxxxxx> wrote: > > BPF supports creating high resolution timers using bpf_timer_* helper > functions. Currently, only the BPF_F_TIMER_ABS flag is supported, which > specifies that the timeout should be interpreted as absolute time. It > would also be useful to be able to pin that timer to a core. For > example, if you wanted to make a subset of cores run without timer > interrupts, and only have the timer be invoked on a single core. > > This patch adds support for this with a new BPF_F_TIMER_CPU_PIN flag. > When specified, the HRTIMER_MODE_PINNED flag is passed to > hrtimer_start(). A subsequent patch will update selftests to validate. > > Signed-off-by: David Vernet <void@xxxxxxxxxxxxx> Acked-by: Song Liu <song@xxxxxxxxxx>
