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Added debug information.

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This commit is contained in:
Guillaume DIDIER 2024-07-03 09:56:22 +02:00
parent c16a503828
commit d3aa4d1317
1 changed files with 9 additions and 0 deletions
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9
cache_slice/src/lib.rs
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@ -99,6 +99,7 @@ fn monitor_core(addr: *const u8, cpu: u8, mut max_cbox: usize) -> Result<Vec<u64
let workaround = if (performance_counters.max_slice as usize) + 1 == max_cbox { let workaround = if (performance_counters.max_slice as usize) + 1 == max_cbox {
max_cbox = performance_counters.max_slice as usize; max_cbox = performance_counters.max_slice as usize;
eprintln!("Using workaround");
true true
} else if (performance_counters.max_slice as usize) >= max_cbox { } else if (performance_counters.max_slice as usize) >= max_cbox {
false false
@ -106,16 +107,22 @@ fn monitor_core(addr: *const u8, cpu: u8, mut max_cbox: usize) -> Result<Vec<u64
return Err(Error::InvalidParameter); return Err(Error::InvalidParameter);
}; };
eprintln!("Disabling counters");
write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_disable_ctrs)?; write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_disable_ctrs)?;
eprint!("Resetting counters...");
for i in 0..max_cbox { for i in 0..max_cbox {
eprint!(" {i}");
write_msr_on_cpu(performance_counters.msr_unc_cbo_per_ctr0[i], cpu, performance_counters.val_reset_ctrs)?; write_msr_on_cpu(performance_counters.msr_unc_cbo_per_ctr0[i], cpu, performance_counters.val_reset_ctrs)?;
} }
eprintln!(" ok");
eprintln!("Selecting events");
for i in 0..max_cbox { for i in 0..max_cbox {
write_msr_on_cpu(performance_counters.msr_unc_cbo_perfevtsel0[i], cpu, performance_counters.val_select_evt_core)?; write_msr_on_cpu(performance_counters.msr_unc_cbo_perfevtsel0[i], cpu, performance_counters.val_select_evt_core)?;
} }
eprintln!("enabling counters");
write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_enable_ctrs)?; write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_enable_ctrs)?;
unsafe { poke(addr) }; unsafe { poke(addr) };
@ -126,6 +133,7 @@ fn monitor_core(addr: *const u8, cpu: u8, mut max_cbox: usize) -> Result<Vec<u64
*/ */
// Read counters // Read counters
eprintln!("Gathering results");
let mut results = Vec::new(); let mut results = Vec::new();
for i in 0..max_cbox { for i in 0..max_cbox {
let result = read_msr_on_cpu(performance_counters.msr_unc_cbo_per_ctr0[i], cpu)?; let result = read_msr_on_cpu(performance_counters.msr_unc_cbo_per_ctr0[i], cpu)?;
@ -136,6 +144,7 @@ fn monitor_core(addr: *const u8, cpu: u8, mut max_cbox: usize) -> Result<Vec<u64
} }
} }
eprintln!("disabling counters again");
write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_disable_ctrs)?; write_msr_on_cpu(performance_counters.msr_unc_perf_global_ctr, cpu, performance_counters.val_disable_ctrs)?;
Ok(results) Ok(results)