tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc

Source file repositories/reference/linux-study-clean/tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc
Extension
.tc
Size
710 bytes
Lines
31
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# description: Test wwnr monitor with printk reactor
# requires: available_reactors wwnr:monitor printk:reactor stress-ng:program

load() { # returns true if there was a reaction
	local lines_before num
	num=$((($(nproc) + 1) / 2))
	lines_before=$(dmesg | wc -l)
	stress-ng --cpu-sched "$num" --timer "$num" -t 5 -q
	dmesg | tail -n $((lines_before + 1)) | grep -q "rv: monitor wwnr does not allow event"
}

echo 1 > monitors/wwnr/enable
echo printk > monitors/wwnr/reactors

load

echo 0 > monitoring_on
! load
echo 1 > monitoring_on

load

echo 0 > reacting_on
! load
echo 1 > reacting_on

echo nop > monitors/wwnr/reactors
echo 0 > monitors/wwnr/enable

Annotation

Implementation Notes