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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trigger-onmax-action-hist.tc (934B)


      1#!/bin/sh
      2# SPDX-License-Identifier: GPL-2.0
      3# description: event trigger - test inter-event histogram trigger onmax action
      4# requires: set_event synthetic_events events/sched/sched_process_fork/hist
      5
      6fail() { #msg
      7    echo $1
      8    exit_fail
      9}
     10
     11echo "Test create synthetic event"
     12
     13echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
     14if [ ! -d events/synthetic/wakeup_latency ]; then
     15    fail "Failed to create wakeup_latency synthetic event"
     16fi
     17
     18echo "Test onmax action"
     19
     20echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_waking/trigger
     21echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
     22
     23ping $LOCALHOST -c 3
     24if ! grep -q "max:" events/sched/sched_switch/hist; then
     25    fail "Failed to create onmax action inter-event histogram"
     26fi
     27
     28exit 0