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Preliminary Work of Nehalem & Westmere slice support

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This commit is contained in:
GuillaumeDIDIER 2020-06-03 08:49:10 +02:00
parent b0784fadf8
commit dfd59064fc
1 changed files with 6 additions and 3 deletions
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9
cache_utils/src/complex_addressing.rs
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@ -7,7 +7,7 @@ use cpuid::MicroArchitecture;
pub enum CacheSlicing { pub enum CacheSlicing {
Unsupported, Unsupported,
ComplexAddressing(&'static [usize]), ComplexAddressing(&'static [usize]),
SimpleAddressing(&'static usize), SimpleAddressing(usize),
NoSlice, NoSlice,
} }
const SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS: [usize; 4] = [ const SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS: [usize; 4] = [
@ -29,12 +29,15 @@ pub fn cache_slicing(uarch: MicroArchitecture, physical_cores: u8) -> CacheSlici
| MicroArchitecture::KabyLake | MicroArchitecture::KabyLake
| MicroArchitecture::CoffeeLake => { | MicroArchitecture::CoffeeLake => {
ComplexAddressing(&SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS[0..((trailing_zeros + 1) as usize)]) ComplexAddressing(&SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS[0..((trailing_zeros + 1) as usize)])
} },
MicroArchitecture::SandyBridge MicroArchitecture::SandyBridge
| MicroArchitecture::Haswell | MicroArchitecture::HaswellE | MicroArchitecture::Haswell | MicroArchitecture::HaswellE
| MicroArchitecture::Broadwell | MicroArchitecture::Broadwell
| MicroArchitecture::IvyBridge | MicroArchitecture::IvyBridgeE => { | MicroArchitecture::IvyBridge | MicroArchitecture::IvyBridgeE => {
ComplexAddressing(&SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS[0..((trailing_zeros) as usize)]) ComplexAddressing(&SANDYBRIDGE_TO_SKYLAKE_FUNCTIONS[0..((trailing_zeros) as usize)])
},
MicroArchitecture::Nehalem | MicroArchitecture::Westmere => {
SimpleAddressing(((physical_cores -1) as usize) << 6 )// WRONG FIXME !!!
} }
_ => Unsupported, _ => Unsupported,
} }
@ -53,7 +56,7 @@ impl CacheSlicing {
} }
pub fn hash(&self, addr: usize) -> Option<usize> { pub fn hash(&self, addr: usize) -> Option<usize> {
match self { match self {
SimpleAddressing(&mask) => Some((addr & mask)), SimpleAddressing(mask) => Some((addr & *mask)),
ComplexAddressing(masks) => { ComplexAddressing(masks) => {
let mut res = 0; let mut res = 0;
for mask in *masks { for mask in *masks {