cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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subsystem-enable.tc (901B)


      1#!/bin/sh
      2# SPDX-License-Identifier: GPL-2.0
      3# description: event tracing - enable/disable with subsystem level files
      4# requires: set_event events/sched/enable
      5# flags: instance
      6
      7do_reset() {
      8    echo > set_event
      9    clear_trace
     10}
     11
     12fail() { #msg
     13    echo $1
     14    exit_fail
     15}
     16
     17echo 'sched:*' > set_event
     18
     19yield
     20
     21count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
     22if [ $count -lt 3 ]; then
     23    fail "at least fork, exec and exit events should be recorded"
     24fi
     25
     26do_reset
     27
     28echo 1 > events/sched/enable
     29
     30yield
     31
     32count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
     33if [ $count -lt 3 ]; then
     34    fail "at least fork, exec and exit events should be recorded"
     35fi
     36
     37do_reset
     38
     39echo 0 > events/sched/enable
     40
     41yield
     42
     43count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
     44if [ $count -ne 0 ]; then
     45    fail "any of scheduler events should not be recorded"
     46fi
     47
     48exit 0