162306a36Sopenharmony_ci#!/bin/sh 262306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0 362306a36Sopenharmony_ci# description: Snapshot and tracing_cpumask 462306a36Sopenharmony_ci# requires: trace_marker tracing_cpumask snapshot 562306a36Sopenharmony_ci# flags: instance 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci# This testcase is constrived to reproduce a problem that the cpu buffers 862306a36Sopenharmony_ci# become unavailable which is due to 'record_disabled' of array_buffer and 962306a36Sopenharmony_ci# max_buffer being messed up. 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci# Store origin cpumask 1262306a36Sopenharmony_ciORIG_CPUMASK=`cat tracing_cpumask` 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci# Stop tracing all cpu 1562306a36Sopenharmony_ciecho 0 > tracing_cpumask 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci# Take a snapshot of the main buffer 1862306a36Sopenharmony_ciecho 1 > snapshot 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci# Restore origin cpumask, note that there should be some cpus being traced 2162306a36Sopenharmony_ciecho ${ORIG_CPUMASK} > tracing_cpumask 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci# Set tracing on 2462306a36Sopenharmony_ciecho 1 > tracing_on 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci# Write a log into buffer 2762306a36Sopenharmony_ciecho "test input 1" > trace_marker 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci# Ensure the log writed so that cpu buffers are still available 3062306a36Sopenharmony_cigrep -q "test input 1" trace 3162306a36Sopenharmony_ciexit 0 32