diff options
| author | Michael Kelley <mikelley@microsoft.com> | 2023-03-27 06:16:06 -0700 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-04-17 19:19:05 +0000 |
| commit | d7b6ba9611aefc4bef207b16db8ff06b726efe35 (patch) | |
| tree | 8db71a7f418effbd5fcf5f350866d1217a29b29b /arch/x86/hyperv/hv_apic.c | |
| parent | 9a6b1a170ca8627d401fa76112e4920ba8c6314c (diff) | |
x86/hyperv: Add callback filter to cpumask_to_vpset()
When copying CPUs from a Linux cpumask to a Hyper-V VPset,
cpumask_to_vpset() currently has a "_noself" variant that doesn't copy
the current CPU to the VPset. Generalize this variant by replacing it
with a "_skip" variant having a callback function that is invoked for
each CPU to decide if that CPU should be copied. Update the one caller
of cpumask_to_vpset_noself() to use the new "_skip" variant instead.
No functional change.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1679922967-26582-2-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'arch/x86/hyperv/hv_apic.c')
| -rw-r--r-- | arch/x86/hyperv/hv_apic.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index fb8b2c088681..1fbda2f94184 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -96,6 +96,11 @@ static void hv_apic_eoi_write(u32 reg, u32 val) wrmsr(HV_X64_MSR_EOI, val, 0); } +static bool cpu_is_self(int cpu) +{ + return cpu == smp_processor_id(); +} + /* * IPI implementation on Hyper-V. */ @@ -128,10 +133,9 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector, */ if (!cpumask_equal(mask, cpu_present_mask) || exclude_self) { ipi_arg->vp_set.format = HV_GENERIC_SET_SPARSE_4K; - if (exclude_self) - nr_bank = cpumask_to_vpset_noself(&(ipi_arg->vp_set), mask); - else - nr_bank = cpumask_to_vpset(&(ipi_arg->vp_set), mask); + + nr_bank = cpumask_to_vpset_skip(&(ipi_arg->vp_set), mask, + exclude_self ? cpu_is_self : NULL); /* * 'nr_bank <= 0' means some CPUs in cpumask can't be |