strat9_kernel/shell/commands/timer/
mod.rs

1//! Timer debug commands
2//!
3//! Provides shell commands for debugging and verifying timer accuracy.
4
5use crate::{arch::x86_64::timer::TIMER_HZ, shell::ShellError, shell_println};
6use alloc::string::String;
7
8/// Timer debug command
9///
10/// Usage: timer test <seconds>
11///
12/// Measures elapsed real time vs kernel ticks.
13pub fn cmd_timer(args: &[String]) -> Result<(), ShellError> {
14    if args.is_empty() {
15        print_usage();
16        return Ok(());
17    }
18
19    match args[0].as_str() {
20        "test" => {
21            shell_println!("timer test is disabled (unstable debug path removed).");
22            shell_println!("Use 'timer info' to inspect current timer configuration.");
23            Ok(())
24        }
25        "info" => {
26            shell_println!("=== Timer Information ===");
27            shell_println!("Scheduler ticks: {}", crate::process::scheduler::ticks());
28
29            if crate::arch::x86_64::timer::is_apic_timer_active() {
30                let ticks_per_10ms = crate::arch::x86_64::timer::apic_ticks_per_10ms();
31                shell_println!("Timer mode: APIC");
32                shell_println!("Ticks per 10ms: {}", ticks_per_10ms);
33                shell_println!(
34                    "Estimated CPU: {} MHz",
35                    (ticks_per_10ms as u64) * 16 * 100 / 1_000_000
36                );
37            } else {
38                shell_println!("Timer mode: PIT (fallback)");
39                shell_println!("Frequency: {} Hz", TIMER_HZ);
40            }
41
42            Ok(())
43        }
44        _ => {
45            print_usage();
46            Ok(())
47        }
48    }
49}
50
51/// Performs the print usage operation.
52fn print_usage() {
53    shell_println!("Timer debug commands:");
54    shell_println!("  timer test            - Disabled (unstable debug path removed)");
55    shell_println!("  timer info            - Show timer configuration");
56    shell_println!("");
57    shell_println!("Examples:");
58    shell_println!("  timer test          - Shows disabled message");
59    shell_println!("  timer info          - Show current timer info");
60}
strat9_kernel/shell/commands/timer/mod.rs

strat9_kernel/shell/commands/timer/
mod.rs
