20359643527

Committed 19 Dec 2025 04:16AM UTC coverage: 77.064% (+48.4%) from 28.618%

Build # 20359643527

Build Type

Pull #84

github

Committed by

web-flow

Commit Message

Merge 3e5c89ae7 into 5b8b670d9

Pull Request Pull Request #84: NVRC complete code coverage

Run Details

67 of 88 new or added lines in 10 files covered. (76.14%)

16 existing lines in 5 files now uncovered.

252 of 327 relevant lines covered (77.06%)

1.37 hits per line

Source File
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66.67

/src/modprobe.rs

use crate::execute::foreground;
use anyhow::Result;

const MODPROBE: &str = "/sbin/modprobe";

/// Load a kernel module via modprobe.
/// Used to load GPU drivers (nvidia, nvidia-uvm) during init.
pub fn load(module: &str) -> Result<()> {
    foreground(MODPROBE, &[module])
}

/// Reload NVIDIA modules to pick up configuration changes.
/// Used after nvidia-smi adjusts GPU settings (clocks, power limits)
/// that require a module reload to take effect.
pub fn reload_nvidia_modules() -> Result<()> {
    foreground(MODPROBE, &["-r", "nvidia-uvm", "nvidia"])?;
    load("nvidia")?;
    load("nvidia-uvm")
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::test_utils::require_root;

    // Test with real kernel modules commonly available on Linux.

    #[test]
    fn test_load_loop() {
        require_root();
        // 'loop' module is almost always available (loop devices)
        assert!(load("loop").is_ok());
    }

    #[test]
    fn test_load_dummy() {
        require_root();
        // 'dummy' creates a dummy network interface - safe to load
        assert!(load("dummy").is_ok());
    }

    #[test]
    fn test_load_nonexistent() {
        require_root();
        // Should fail for a module that doesn't exist
        assert!(load("nonexistent_module_xyz123").is_err());
    }

    #[test]
    fn test_reload_fails_without_hardware() {
        require_root();
        // Will fail: no nvidia modules on systems without NVIDIA
        let _ = reload_nvidia_modules();
    }
}

1	use crate::execute::foreground;
2	use anyhow::Result;
3
4	const MODPROBE: &str = "/sbin/modprobe";
5
6	/// Load a kernel module via modprobe.
7	/// Used to load GPU drivers (nvidia, nvidia-uvm) during init.
8	pub fn load(module: &str) -> Result<()> {	1✔
9	foreground(MODPROBE, &[module])	2✔
10	}
11
12	/// Reload NVIDIA modules to pick up configuration changes.
13	/// Used after nvidia-smi adjusts GPU settings (clocks, power limits)
14	/// that require a module reload to take effect.
15	pub fn reload_nvidia_modules() -> Result<()> {	1✔
16	foreground(MODPROBE, &["-r", "nvidia-uvm", "nvidia"])?;	1✔
NEW 17	load("nvidia")?;	×
NEW 18	load("nvidia-uvm")	×
19	}
20
21	#[cfg(test)]
22	mod tests {
23	use super::*;
24	use crate::test_utils::require_root;
25
26	// Test with real kernel modules commonly available on Linux.
27
28	#[test]
29	fn test_load_loop() {
30	require_root();
31	// 'loop' module is almost always available (loop devices)
32	assert!(load("loop").is_ok());
33	}
34
35	#[test]
36	fn test_load_dummy() {
37	require_root();
38	// 'dummy' creates a dummy network interface - safe to load
39	assert!(load("dummy").is_ok());
40	}
41
42	#[test]
43	fn test_load_nonexistent() {
44	require_root();
45	// Should fail for a module that doesn't exist
46	assert!(load("nonexistent_module_xyz123").is_err());
47	}
48
49	#[test]
50	fn test_reload_fails_without_hardware() {
51	require_root();
52	// Will fail: no nvidia modules on systems without NVIDIA
53	let _ = reload_nvidia_modules();
54	}
55	}

NVIDIA / nvrc / 20359643527

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