diff options
Diffstat (limited to 'tools/guest-diag/guest_kprobes.sh')
| -rw-r--r-- | tools/guest-diag/guest_kprobes.sh | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/guest-diag/guest_kprobes.sh b/tools/guest-diag/guest_kprobes.sh index f676e20..0afe6c6 100644 --- a/tools/guest-diag/guest_kprobes.sh +++ b/tools/guest-diag/guest_kprobes.sh @@ -15,29 +15,35 @@ TR=/sys/kernel/tracing [ -d "$TR" ] || TR=/sys/kernel/debug/tracing +# An enabled kprobe event cannot be deleted (EBUSY); disable the group first. +echo 0 > "$TR/events/kprobes/enable" 2>/dev/null || true + add_probe() { name=$1; sym=$2; fmt=$3 + echo "-:kprobes/$name" >> "$TR/kprobe_events" 2>/dev/null echo "-:$name" >> "$TR/kprobe_events" 2>/dev/null if ! grep -qw "$sym" /proc/kallsyms 2>/dev/null; then echo "FAIL $name: symbol $sym not in kallsyms" return 1 fi if echo "p:$name $sym $fmt" >> "$TR/kprobe_events" 2>/dev/null; then - if grep -q "p:$name" "$TR/kprobe_events" 2>/dev/null; then + if grep -qE "p:[^ ]*[ /]$name( |$)" "$TR/kprobe_events" 2>/dev/null; then echo "ok $name $sym" return 0 fi fi + echo "-:kprobes/$name" >> "$TR/kprobe_events" 2>/dev/null echo "-:$name" >> "$TR/kprobe_events" 2>/dev/null if echo "p:$name nvidia_uvm:$sym $fmt" >> "$TR/kprobe_events" 2>/dev/null; then - if grep -q "p:$name" "$TR/kprobe_events" 2>/dev/null; then + if grep -qE "p:[^ ]*[ /]$name( |$)" "$TR/kprobe_events" 2>/dev/null; then echo "ok-module $name $sym" return 0 fi fi + echo "-:kprobes/$name" >> "$TR/kprobe_events" 2>/dev/null echo "-:$name" >> "$TR/kprobe_events" 2>/dev/null if echo "p:$name $sym" >> "$TR/kprobe_events" 2>/dev/null; then - if grep -q "p:$name" "$TR/kprobe_events" 2>/dev/null; then + if grep -qE "p:[^ ]*[ /]$name( |$)" "$TR/kprobe_events" 2>/dev/null; then echo "ok-bare $name $sym" return 0 fi |