Add some warm up and fix some output related issues + make the cpuid leaf 4 availale as an util

cache_utils/src/bin/cache_info.rs

@@ -0,0 +1,5 @@
+use cache_utils::cache_info::get_cache_info;
+
+pub fn main() {
+    println!("{:#?}", get_cache_info());
+}

cache_utils/src/cache_info.rs

@@ -36,7 +36,7 @@ pub struct CacheInfo {
     pub level: u8,
     pub self_init: bool,
     pub fully_assoc: bool,
-    pub core_for_cache: u16,
+    pub maxID_for_cache: u16,
     pub core_in_package: u16,
     pub cache_line_size: u16,
     pub physical_line_partition: u16,
@@ -64,7 +64,7 @@ impl CacheInfo {
         let level: u8 = (cr.eax >> 5 & 0x7) as u8;
         let self_init = (cr.eax >> 8 & 0x1) != 0;
         let fully_assoc = (cr.eax >> 9 & 0x1) != 0;
-        let core_for_cache = (cr.eax >> 14 & 0xfff) as u16 + 1;
+        let maxID_for_cache = (cr.eax >> 14 & 0xfff) as u16 + 1;
         let core_in_package = (cr.eax >> 26 & 0x3f) as u16 + 1;
         let cache_line_size = (cr.ebx & 0xfff) as u16 + 1;
         let physical_line_partition = (cr.ebx >> 12 & 0x3ff) as u16 + 1;
@@ -79,7 +79,7 @@ impl CacheInfo {
             level,
             self_init,
             fully_assoc,
-            core_for_cache,
+            maxID_for_cache,
             core_in_package,
             cache_line_size,
             physical_line_partition,

cache_utils/src/calibration.rs

@@ -12,7 +12,7 @@ pub enum Verbosity {
 }
 
 extern crate alloc;
-use crate::calibration::Verbosity::{Debug, RawResult, Thresholds};
+use crate::calibration::Verbosity::{Debug, NoOutput, RawResult, Thresholds};
 use alloc::vec;
 use alloc::vec::Vec;
 use core::cmp::min;
@@ -157,8 +157,9 @@ pub fn calibrate_flush(
     cache_line_size: usize,
     verbose_level: Verbosity,
 ) -> Vec<(usize, Vec<(usize, usize)>, usize)> {
-    println!("Calibrating cflush...");
+    if verbose_level > NoOutput {
-
+        println!("Calibrating cflush...");
+    }
     let mut ret = Vec::new();
     // Allocate a target array
     // TBD why size, why the position in the array, why the type (usize)
@@ -284,9 +285,10 @@ pub fn calibrate_flush(
                 threshold = (i, hit_histogram[i] + miss_histogram[i]);
             }
         }*/
-
+        if verbose_level > NoOutput {
-        println!("Threshold {}", threshold.0 * CFLUSH_BUCKET_SIZE);
+            println!("Threshold {}", threshold.0 * CFLUSH_BUCKET_SIZE);
-        println!("Calibration done.");
+            println!("Calibration done.");
+        }
 
         ret.push((
             i as usize,

cache_utils/src/main.rs

@@ -71,9 +71,11 @@ pub fn main() {
 
             match sched_setaffinity(Pid::from_raw(0), &core) {
                 Ok(()) => {
+                    calibrate_flush(m, 64, Verbosity::NoOutput);
                     calibrate_flush(m, 64, Verbosity::Thresholds);
                     sched_setaffinity(Pid::from_raw(0), &old).unwrap();
                     println!("Iteration {}...ok ", i);
+                    eprintln!("Iteration {}...ok ", i);
                 }
                 Err(Sys(Errno::EINVAL)) => {
                     println!("skipping");