On Mon, 5 Feb 2024 10:28:57 +0000 Mark Rutland <mark.rutl...@arm.com> wrote:
> > I try to write below: > > echo 'target_cpus == 11 && reason == "Function call interrupts"' > > > events/ipi/ipi_raise/filter > > The '=' checks if the target_cpus bitmap *only* contains CPU 11. If the > cpumask > contains other CPUs, the filter will skip the call. > > I believe you can use '&' to check whether a cpumask contains a CPU, e.g. > > 'target_cpus & 11' 11 == 0xb = b1011 So the above would only be true for CPUs 0,1 and 3 ;-) I think you meant: 'target_cpus & 0x800' I tried "1 << 11' but it appears to not allow shifts. I wonder if we should add that? -- Steve
