new file mode 100644
@@ -0,0 +1,91 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event tracing - enable filter predicates
+# requires: set_event events/sched
+# flags:
+
+do_reset() {
+ echo 0 > ${event}/enable
+ echo 0 > ${event}/filter
+ clear_trace
+}
+
+fail() { #msg
+ echo $1
+ exit_fail
+}
+
+test_filter() { # event filter cmd
+ event=$1
+ filter="$2"
+ cmd=$3
+ findevent=`basename $event`
+ echo "$filter" > ${event}/filter
+ echo 1 > ${event}/enable
+ $cmd
+ count=`grep $findevent trace |wc -l`
+ if [ $count -lt 1 ]; then
+ fail "at least one $event should be recorded for '$filter'"
+ fi
+ do_reset
+}
+
+# verify filter predicates at trace event/subsys level for
+# - string (prev_comm)
+# - 1-byte value (common_flags)
+# - 2-byte value (common_type)
+# - 4-byte value (next_pid)
+# - 8-byte value (prev_state)
+
+for event in events/sched/sched_switch events/sched
+do
+ for filter in "prev_comm == 'ftracetest'" \
+ "common_flags != 0" \
+ "common_type >= 0" \
+ "next_pid > 0" \
+ "prev_state != 0"
+ do
+ test_filter "$event" "$filter" "yield"
+ done
+done
+
+# verify '==', '!=' filter predicates for IPv4 addresses at event/subsys
+# level
+for event in events/fib/fib_table_lookup events/fib ; do
+ for filter in "dst == 127.0.0.1" \
+ "src != 127.0.0.1"
+ do
+ test_filter "$event" "$filter" "ping -c 1 127.0.0.1"
+ done
+done
+
+# verify '==', '!=' filter predicates for IPv6 addresses/16-byte arrays
+# at event/subsys level
+for event in events/fib6/fib6_table_lookup events/fib6 ; do
+ for filter in "dst == 0x00000000000000000000000000000001" \
+ "src != 0x00000000000000000000000000000001" \
+ "dst == ::1" \
+ "src != ::1" \
+ "dst == 0:0:0:0:0:0:0:1" \
+ "dst == 0000:0000:0000:0000:0000:0000:0000:00001"
+ do
+ test_filter "$event" "$filter" "ping -c 1 -6 ::1"
+ done
+done
+
+set +e
+modprobe cfg80211
+set -e
+
+if [[ -d events/cfg80211/rdev_get_key ]]; then
+ for event in events/cfg80211/rdev_get_key ; do
+ for filter in "mac_addr == de:ad:be:ef:de:ad" \
+ "mac_addr != AB:CD:EF:01:23:45"
+ do
+ echo "$filter" > events/cfg80211/rdev_get_key/filter
+ echo 0 > events/cfg80211/rdev_get_key/filter
+ done
+ done
+fi
+
+exit 0
add tests verifying filter predicates work for 1/2/4/8/16 byte values, IPv4, IPv6, MAC addresses and strings; use predicats at event and subsystem level. Signed-off-by: Alan Maguire <alan.maguire@oracle.com> --- .../selftests/ftrace/test.d/event/filter.tc | 91 +++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/event/filter.tc