35 lines
889 B
Plaintext
35 lines
889 B
Plaintext
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Register/unregister many kprobe events
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[ -f kprobe_events ] || exit_unsupported # this is configurable
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# ftrace fentry skip size depends on the machine architecture.
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# Currently HAVE_KPROBES_ON_FTRACE defined on x86 and powerpc64le
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case `uname -m` in
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x86_64|i[3456]86) OFFS=5;;
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ppc64le) OFFS=8;;
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*) OFFS=0;;
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esac
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N=0
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echo "Setup up kprobes on first available 256 text symbols"
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grep -i " t " /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \
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while read i; do
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echo p ${i}+${OFFS} >> kprobe_events && N=$((N+1)) ||:
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test $N -eq 256 && break
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done
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L=`cat kprobe_events | wc -l`
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if [ $L -ne 256 ]; then
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echo "The number of kprobes events ($L) is not 256"
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exit_fail
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fi
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echo 1 > events/kprobes/enable
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echo 0 > events/kprobes/enable
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echo > kprobe_events
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echo "Waiting for unoptimizing & freeing"
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sleep 5
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echo "Done"
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