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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 13:49:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 13:49:34 -0800
commit179a7ba6806805bd4cd7a5e4574b83353c5615ad (patch)
tree58855a59ba3bd66f947c3f9781cd44a7329c7d75 /tools/testing
parent5e176d6973bdac04d9f298ca384c39f08eb084cb (diff)
parent3dbb16b87b57bb1088044ad2a0432e4769075002 (diff)
Merge tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt: "This release has a few updates: - STM can hook into the function tracer - Function filtering now supports more advance glob matching - Ftrace selftests updates and added tests - Softirq tag in traces now show only softirqs - ARM nop added to non traced locations at compile time - New trace_marker_raw file that allows for binary input - Optimizations to the ring buffer - Removal of kmap in trace_marker - Wakeup and irqsoff tracers now adhere to the set_graph_notrace file - Other various fixes and clean ups" * tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (42 commits) selftests: ftrace: Shift down default message verbosity kprobes/trace: Fix kprobe selftest for newer gcc tracing/kprobes: Add a helper method to return number of probe hits tracing/rb: Init the CPU mask on allocation tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too fgraph: Handle a case where a tracer ignores set_graph_notrace tracing: Replace kmap with copy_from_user() in trace_marker writing ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it tracing: Allow benchmark to be enabled at early_initcall() tracing: Have system enable return error if one of the events fail tracing: Do not start benchmark on boot up tracing: Have the reg function allow to fail ring-buffer: Force rb_end_commit() and rb_set_commit_to_write() inline ring-buffer: Froce rb_update_write_stamp() to be inlined ring-buffer: Force inline of hotpath helper functions tracing: Make __buffer_unlock_commit() always_inline tracing: Make tracepoint_printk a static_key ring-buffer: Always inline rb_event_data() ring-buffer: Make rb_reserve_next_event() always inlined ...
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/ftrace/.gitignore1
-rwxr-xr-xtools/testing/selftests/ftrace/ftracetest16
-rw-r--r--tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc49
-rw-r--r--tools/testing/selftests/ftrace/test.d/functions28
-rw-r--r--tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc37
-rw-r--r--tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc2
-rw-r--r--tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc5
7 files changed, 131 insertions, 7 deletions
diff --git a/tools/testing/selftests/ftrace/.gitignore b/tools/testing/selftests/ftrace/.gitignore
new file mode 100644
index 000000000000..98d8a5a63049
--- /dev/null
+++ b/tools/testing/selftests/ftrace/.gitignore
@@ -0,0 +1 @@
+logs
diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
index 4c6a0bf8ba79..52e3c4df28d6 100755
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -13,7 +13,8 @@ echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
echo " Options:"
echo " -h|--help Show help message"
echo " -k|--keep Keep passed test logs"
-echo " -v|--verbose Show all stdout messages in testcases"
+echo " -v|--verbose Increase verbosity of test messages"
+echo " -vv Alias of -v -v (Show all results in stdout)"
echo " -d|--debug Debug mode (trace all shell commands)"
exit $1
}
@@ -54,8 +55,9 @@ parse_opts() { # opts
KEEP_LOG=1
shift 1
;;
- --verbose|-v)
- VERBOSE=1
+ --verbose|-v|-vv)
+ VERBOSE=$((VERBOSE + 1))
+ [ $1 == '-vv' ] && VERBOSE=$((VERBOSE + 1))
shift 1
;;
--debug|-d)
@@ -228,7 +230,7 @@ trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
__run_test() { # testfile
# setup PID and PPID, $$ is not updated.
- (cd $TRACING_DIR; read PID _ < /proc/self/stat ; set -e; set -x; . $1)
+ (cd $TRACING_DIR; read PID _ < /proc/self/stat; set -e; set -x; initialize_ftrace; . $1)
[ $? -ne 0 ] && kill -s $SIG_FAIL $SIG_PID
}
@@ -236,10 +238,11 @@ __run_test() { # testfile
run_test() { # testfile
local testname=`basename $1`
local testlog=`mktemp $LOG_DIR/${testname}-log.XXXXXX`
+ export TMPDIR=`mktemp -d /tmp/ftracetest-dir.XXXXXX`
testcase $1
echo "execute: "$1 > $testlog
SIG_RESULT=0
- if [ $VERBOSE -ne 0 ]; then
+ if [ $VERBOSE -ge 2 ]; then
__run_test $1 2>> $testlog | tee -a $testlog
else
__run_test $1 >> $testlog 2>&1
@@ -249,9 +252,10 @@ run_test() { # testfile
# Remove test log if the test was done as it was expected.
[ $KEEP_LOG -eq 0 ] && rm $testlog
else
- catlog $testlog
+ [ $VERBOSE -ge 1 ] && catlog $testlog
TOTAL_RESULT=1
fi
+ rm -rf $TMPDIR
}
# load in the helper functions
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
new file mode 100644
index 000000000000..9dcd0ca1f49c
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
@@ -0,0 +1,49 @@
+#!/bin/sh
+# description: ftrace - function glob filters
+
+# Make sure that function glob matching filter works.
+
+if ! grep -q function available_tracers; then
+ echo "no function tracer configured"
+ exit_unsupported
+fi
+
+disable_tracing
+clear_trace
+
+# filter by ?, schedule is always good
+if ! echo "sch?dule" > set_ftrace_filter; then
+ # test for powerpc 64
+ if ! echo ".sch?dule" > set_ftrace_filter; then
+ fail "can not enable schedule filter"
+ fi
+ cat set_ftrace_filter | grep '^.schedule$'
+else
+ cat set_ftrace_filter | grep '^schedule$'
+fi
+
+ftrace_filter_check() { # glob grep
+ echo "$1" > set_ftrace_filter
+ cut -f1 -d" " set_ftrace_filter > $TMPDIR/actual
+ cut -f1 -d" " available_filter_functions | grep "$2" > $TMPDIR/expected
+ DIFF=`diff $TMPDIR/actual $TMPDIR/expected`
+ test -z "$DIFF"
+}
+
+# filter by *, front match
+ftrace_filter_check '*schedule' '^.*schedule$'
+
+# filter by *, middle match
+ftrace_filter_check '*schedule*' '^.*schedule.*$'
+
+# filter by *, end match
+ftrace_filter_check 'schedule*' '^schedule.*$'
+
+# filter by *, both side match
+ftrace_filter_check 'sch*ule' '^sch.*ule$'
+
+# filter by char class.
+ftrace_filter_check '[Ss]y[Ss]_*' '^[Ss]y[Ss]_.*$'
+
+echo > set_ftrace_filter
+enable_tracing
diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions
index c37262f6c269..91de1a8e4f19 100644
--- a/tools/testing/selftests/ftrace/test.d/functions
+++ b/tools/testing/selftests/ftrace/test.d/functions
@@ -23,3 +23,31 @@ reset_trigger() { # reset all current setting triggers
done
}
+reset_events_filter() { # reset all current setting filters
+ grep -v ^none events/*/*/filter |
+ while read line; do
+ echo 0 > `echo $line | cut -f1 -d:`
+ done
+}
+
+disable_events() {
+ echo 0 > events/enable
+}
+
+initialize_ftrace() { # Reset ftrace to initial-state
+# As the initial state, ftrace will be set to nop tracer,
+# no events, no triggers, no filters, no function filters,
+# no probes, and tracing on.
+ disable_tracing
+ reset_tracer
+ reset_trigger
+ reset_events_filter
+ disable_events
+ echo > set_event_pid # event tracer is always on
+ [ -f set_ftrace_filter ] && echo | tee set_ftrace_*
+ [ -f set_graph_function ] && echo | tee set_graph_*
+ [ -f stack_trace_filter ] && echo > stack_trace_filter
+ [ -f kprobe_events ] && echo > kprobe_events
+ [ -f uprobe_events ] && echo > uprobe_events
+ enable_tracing
+}
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc
new file mode 100644
index 000000000000..0a78705b43b2
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc
@@ -0,0 +1,37 @@
+#!/bin/sh
+# description: Kprobes event arguments with types
+
+[ -f kprobe_events ] || exit_unsupported # this is configurable
+
+grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue
+
+echo 0 > events/enable
+echo > kprobe_events
+enable_tracing
+
+echo 'p:testprobe _do_fork $stack0:s32 $stack0:u32 $stack0:x32 $stack0:b8@4/32' > kprobe_events
+grep testprobe kprobe_events
+test -d events/kprobes/testprobe
+
+echo 1 > events/kprobes/testprobe/enable
+( echo "forked")
+echo 0 > events/kprobes/testprobe/enable
+ARGS=`tail -n 1 trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'`
+
+check_types() {
+ X1=`printf "%x" $1 | tail -c 8`
+ X2=`printf "%x" $2`
+ X3=`printf "%x" $3`
+ test $X1 = $X2
+ test $X2 = $X3
+ test 0x$X3 = $3
+
+ B4=`printf "%x" $4`
+ B3=`echo -n $X3 | tail -c 3 | head -c 2`
+ test $B3 = $B4
+}
+check_types $ARGS
+
+echo "-:testprobe" >> kprobe_events
+clear_trace
+test -d events/kprobes/testprobe && exit 1 || exit 0
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc
index 0bf5085281f3..400e98b64948 100644
--- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc
@@ -56,7 +56,7 @@ echo "Test histogram with syscall modifier"
echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger
for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
-grep "id: sys_" events/raw_syscalls/sys_exit/hist > /dev/null || \
+grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \
fail "syscall modifier on raw_syscalls/sys_exit did not work"
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
index f84b80d551a2..ed94f0c4e0e4 100644
--- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
@@ -23,6 +23,11 @@ if [ ! -f events/sched/sched_process_fork/trigger ]; then
exit_unsupported
fi
+if [ ! -f snapshot ]; then
+ echo "snapshot is not supported"
+ exit_unsupported
+fi
+
reset_tracer
do_reset