Update Intel PT testing by adding 11 cases

Add 4 perf related PT cases
Add 7 C program related PT cases

Signed-off-by: qwang59 <[email protected]>

pt/Makefile

@@ -3,7 +3,7 @@
 
 CC       ?= "${CC}" -g -Wall
 CFLAGS += -DMAINLINE -I./
-BIN	 = cpl branch psb nonroot_test negative_test
+BIN	 = cpl branch psb nonroot_test negative_test sort_test
 LFLAGS	= -L./ -lipt
 
 
@@ -25,5 +25,8 @@ nonroot_test:
 negative_test:
 	$(CC)	-o  $@ $@.c utils.c ${CFLAGS} ${LFLAGS}
 
+sort_test:
+	$(CC)	-o  $@ $@.c utils.c ${CFLAGS} ${LFLAGS}
+
 clean:
 	rm -rf $(BIN) *.o

pt/perf_tests.sh

@@ -26,6 +26,15 @@ __EOF
 perf_log="perf_record.log"
 temp_log="perf.log"
 
+# Perf tool is required to run this processor trace cases
+if which perf 1>/dev/null 2>&1; then
+  perf list 1>/dev/null || block_test "Failed to run perf tool,
+please check perf tool error message."
+else
+  block_test "perf tool is required to run processor trace cases,
+please get it from latest upstream kernel-tools."
+fi
+
 result_check() {
   grep lost $perf_log
   [[ $? -eq 1 ]] || die "Data loss occurs during the perf record!"
@@ -305,6 +314,26 @@ the CYC package will be disabled if MTC is disabled!"
   rm -f $temp_log
 }
 
+# Function to check if the CYC package is disabled by default
+time_full_test() {
+  local cyc
+  cyc=$(cat /sys/bus/event_source/devices/intel_pt/caps/psb_cyc)
+  [[ $cyc -eq 0 ]] && block_test "Platform does not support Cycle Counter package"
+  if [[ $cyc -eq 1 ]]; then
+    test_print_trc "Platform supports CYC, will check if CYC package is disabled by default"
+    do_cmd "perf record -e intel_pt//u sleep 1 >& $perf_log"
+    result_check
+    sleep 1
+    sync
+    sync
+    do_cmd "perf script -D > $temp_log"
+    should_fail "grep \"CYC 0x\" $temp_log"
+    ##TODO will add more logic after confirming with Adrian
+  fi
+  rm -f $perf_log
+  rm -f $temp_log
+}
+
 # PEBS: Precise Event-Based Sampling
 # Function to record and filter PT's branch events, cycles, and instructions
 # while executing uname command
@@ -488,6 +517,58 @@ event_trace_test() {
   rm -f $temp_log
 }
 
+# Function to check if tracestop is supported and detected.
+tracestop_test() {
+  local path
+  path=$(pwd)
+  path=$path"/sort_test"
+  do_cmd "perf record -e intel_pt//u '--filter=tracestop main @ $path' sort_test >& $perf_log"
+  result_check
+  rm -f $perf_log
+}
+
+# Function to check trace filter with main count
+tracefilter_test() {
+  local path
+  path=$(pwd)
+  path=$path"/sort_test"
+  do_cmd "perf record -e intel_pt//u '--filter=filter main @ $path' sort_test >& $perf_log"
+  result_check
+  sleep 1
+  sync
+  sync
+  do_cmd "perf script --itrace=ibxwe | tail > $temp_log"
+  count_e=$(grep -c main $temp_log)
+  count_cbr=$(grep -c "cbr" $temp_log)
+  count_p=$(grep -c "branch" $temp_log)
+  test_print_trc "count_e=$count_e, count_cbr=$count_cbr, count_p=$count_p"
+  [[ $count_e -eq $count_p ]] || die "main count is not right, trace filter with main is failed!"
+  should_fail "sed -n $count_p'p' $temp_log | grep unknown"
+  rm -f $perf_log
+  rm -f $temp_log
+}
+
+# Function to check if trace filter with __sched for kernel is supported and detected.
+filter_kernel_cpu_test() {
+  rm perfdata -rf
+  do_cmd "perf record --kcore -e intel_pt// --filter 'filter __schedule / __schedule' -a  -- sleep 1 >& $perf_log"
+  result_check
+  sleep 1
+  sync
+  sync
+  do_cmd "perf script --itrace=ibxwpe | tail > $temp_log"
+  count_e=$(grep -c "__sched" $temp_log)
+  count_cbr=$(grep -c "cbr" $temp_log)
+  count_p=$(awk 'END{print NR}' $temp_log)
+  test_print_trc "count_e = $count_e count_cbr=$count_cbr count_p=$count_p"
+
+  [[ $count_e -eq $count_p ]] || die "__sched count is not right, trace filter with __sched for kernel is failed!"
+  should_fail "sed -n $count_p'p' $temp_log | grep unknown"
+  rm perfdata -rf
+  rm -f $perf_log
+  rm -f $temp_log
+}
+
 perftest() {
   case $TEST_SCENARIO in
   fp)
@@ -520,6 +601,9 @@ perftest() {
   mtc)
     time_mtc_test
     ;;
+  time_full)
+    time_full_test
+    ;;
   pebs)
     pebs_test
     ;;
@@ -553,6 +637,15 @@ perftest() {
   event_trace)
     event_trace_test
     ;;
+  trace_stop)
+    tracestop_test
+    ;;
+  trace_filter)
+    tracefilter_test
+    ;;
+  trace_filter_kernel_cpu)
+    filter_kernel_cpu_test
+    ;;
   esac
   return 0
 }

pt/sort_test.c

@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#define ARRAY_LEN 3000
+
+static struct timeval tm1;
+
+static inline void start() {
+  gettimeofday(&tm1, NULL);
+}
+
+static inline void stop() {
+  struct timeval tm2;
+  gettimeofday(&tm2, NULL);
+  unsigned long long t = 1000 * (tm2.tv_sec - tm1.tv_sec) +\
+  (tm2.tv_usec - tm1.tv_usec) / 1000;
+  printf("%llu ms\n", t);
+}
+
+void bubble_sort (int *a, int n) {
+  int i, t, s = 1;
+  while (s) {
+    s = 0;
+    for (i = 1; i < n; i++) {
+      if (a[i] < a[i - 1]) {
+        t = a[i];
+        a[i] = a[i - 1];
+        a[i - 1] = t;
+        s = 1;
+      }
+    }
+  }
+}
+
+void sort_array() {
+  printf("Bubble sorting array of %d elements\n", ARRAY_LEN);
+  int data[ARRAY_LEN], i;
+    for(i=0; i<ARRAY_LEN; ++i){
+      data[i] = rand();
+    }
+  bubble_sort(data, ARRAY_LEN);
+}
+
+int main(){
+  start();
+  sort_array();
+  stop();
+  return 0;
+}

pt/tests

@@ -21,6 +21,8 @@ perf_tests.sh -t cyc
 # Verify if the CYC (cycle count) will be disabled
 # if MTC(mini time counter) is disabled in perf
 perf_tests.sh -t mtc
+# Verify if the CYC package is disabled by default
+perf_tests.sh -t time_full
 # Record and filter PT's branch events, cycles, and instructions
 perf_tests.sh -t pebs
 # Verify Intel PT's last branch recorded stack information
@@ -43,3 +45,37 @@ perf_tests.sh -t lost_data
 perf_tests.sh -t notnt
 # Verify if the event trace is supported and detected
 perf_tests.sh -t event_trace
+# Verify if the tracestop is supported and detected
+perf_tests.sh -t trace_stop
+# Verify the trace filter with main count
+perf_tests.sh -t trace_filter
+# Verify if trace filter with __sched for kernel is supported and detected
+perf_tests.sh -t trace_filter_kernel_cpu
+
+# Below cases are designed with C program
+# Disable branch and check if TIP/FUP/TNT packages are disabled
+# TIP: (Target IP Package)
+# FUP: (Flow Update Package)
+# TNT: (Take/Not-taken)
+branch
+
+# User mode trace check for current privilege level
+# CPL: Current Privilege Level
+cpl 1
+
+# Kernel mode trace check for current privilege level
+cpl 2
+
+# Verify if the psb package is available
+# PSB: Package Stream Boundary
+psb
+
+# Check if the reserved bit cannot be set.
+negative_test
+
+# Doing the full trace check with non root user
+nonroot_test 1
+
+# Doing snapshot trace check with non root user
+nonroot_test 2
+