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This commit is contained in:
Guillaume DIDIER 2024-07-03 11:22:55 +02:00
parent 35b3ec7143
commit c99e244b71
1 changed files with 9 additions and 1 deletions
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10
cache_slice/src/lib.rs
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@ -96,30 +96,36 @@ fn monitor_core(addr: *const u8, cpu: u8) -> Result<Vec<u64>, Error> {
} else { } else {
return Err(UnsupportedCPU); return Err(UnsupportedCPU);
}; };
#[cfg(debug_assertions)]
eprint!("Finding the number of CBox available... "); eprint!("Finding the number of CBox available... ");
let max_cbox = (read_msr_on_cpu(performance_counters.msr_unc_cbo_config, cpu)? & 0xF) as usize; // TODO magic number (mask for bit 3:0) let max_cbox = (read_msr_on_cpu(performance_counters.msr_unc_cbo_config, cpu)? & 0xF) as usize; // TODO magic number (mask for bit 3:0)
#[cfg(debug_assertions)]
eprintln!("{}", max_cbox); eprintln!("{}", max_cbox);
if max_cbox > performance_counters.max_slice as usize { if max_cbox > performance_counters.max_slice as usize {
return Err(InvalidParameter); return Err(InvalidParameter);
} }
#[cfg(debug_assertions)]
eprintln!("Disabling counters"); 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)?;
#[cfg(debug_assertions)]
eprint!("Resetting counters..."); eprint!("Resetting counters...");
for i in 0..max_cbox { for i in 0..max_cbox {
eprint!(" {i}"); 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)?;
} }
#[cfg(debug_assertions)]
eprintln!(" ok"); eprintln!(" ok");
#[cfg(debug_assertions)]
eprintln!("Selecting events"); 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)?;
} }
#[cfg(debug_assertions)]
eprintln!("enabling counters"); 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)?;
@ -131,6 +137,7 @@ fn monitor_core(addr: *const u8, cpu: u8) -> Result<Vec<u64>, Error> {
*/ */
// Read counters // Read counters
#[cfg(debug_assertions)]
eprintln!("Gathering results"); 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 {
@ -142,6 +149,7 @@ fn monitor_core(addr: *const u8, cpu: u8) -> Result<Vec<u64>, Error> {
} }
} }
#[cfg(debug_assertions)]
eprintln!("disabling counters again"); 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)?;