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Read /proc through the mock-root path - #74

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Host CPU and per-task samples were opening the real /proc, so
IO_THREAD_CONTROLLER_ROOT_PATH could not redirect them at a test
filesystem.

Signed-off-by: Leonardo Forchini leonardo.forchini@nutanix.com


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lforchini added this pull request to stack #83 October 1, 2026 14:37
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lforchini removed this pull request from stack #88 October 13, 2026 12:32
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lforchini force-pushed the test/read-fake-proc branch from a0dc5c3 to d453199 Compare October 13, 2026 12:43
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lforchini added this pull request to stack #95 October 13, 2026 12:44
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Comment thread src/util.rs Outdated
/// `procfs::process::Process::new` always opens the real `/proc`. Callers
/// that should honor the mock root pass this path to
/// `Process::new_with_root`.
pub fn proc_pid(pid: i32) -> std::path::PathBuf {

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Not sure this function belongs here, I don't feel too strongly though.

Comment thread src/controller.rs Outdated

use futures_util::future::join_all;
use procfs::{CpuPressure, Current, CurrentSI, IoPressure, MemoryPressure, ProcError};
use procfs::{CpuPressure, Current, FromReadSI, IoPressure, MemoryPressure, ProcError};

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What's this change about?

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I had to build KernelStats from a file and current_system_info and that needed different traits.

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lforchini removed this pull request from stack #95 October 21, 2026 08:27
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lforchini force-pushed the test/read-fake-proc branch from 4356bb5 to 31db8c0 Compare October 23, 2026 08:24
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lforchini force-pushed the test/read-fake-proc branch from b85180b to e0f6155 Compare November 5, 2026 15:10
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lforchini added this pull request to stack #178 November 5, 2026 15:10
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lforchini removed this pull request from stack #178 November 6, 2026 10:23
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lforchini force-pushed the test/read-fake-proc branch from e0f6155 to 3043674 Compare November 6, 2026 10:24
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lforchini added this pull request to stack #180 November 6, 2026 10:24
Host CPU and per-task samples were opening the real /proc, so
IO_THREAD_CONTROLLER_ROOT_PATH could not redirect them at a test
directory.

Signed-off-by: Leonardo Forchini <leonardo.forchini@nutanix.com>
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