143aa5cb1f
If an USDT probe is defined within a shared object, bpftrace expects the path to that shared object instead of an executable. This means that we need to replace __EXE__ in the bpftrace scripts differently, depending on whether the application was linked statically or dynamically. This is now done by the `scripts/bpf/gen.py` script. It lists all available probes, along with their locations, of a process. Then, it matches them to those described in a bpftrace script replacing the __EXE__ markers with the listed location (either a path to the executable or a shared library). If a bpftrace script uses a probe that isn't listed, its __EXE__ will be replaced by a path to the executable. Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com> Change-Id: I7c323d5f7d948ea57cf8d4d3132e4d59a2de594f Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9807 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
20 lines
515 B
Bash
Executable File
20 lines
515 B
Bash
Executable File
#!/usr/bin/env bash
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set -e
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if [ $# -lt 2 ]; then
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echo "usage: $0 <pid> <script>"
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echo ""
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echo "Environment variable BPF_OUTFILE can be set to save results to a file"
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echo "rather than print to stdout."
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exit 1
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fi
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SCRIPTS_DIR=$(readlink -f $(dirname $0))
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BIN_PATH=$(readlink -f /proc/$1/exe)
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BPF_SCRIPT=$($SCRIPTS_DIR/bpf/gen.py -p $1 "${@:2}")
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BPF_SCRIPT+=$($SCRIPTS_DIR/bpf/gen_enums.sh)
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if [ -n "$ECHO_SCRIPT" ]; then
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echo "$BPF_SCRIPT"
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fi
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bpftrace -p $1 -e "$BPF_SCRIPT" ${BPF_OUTFILE:+-o "$BPF_OUTFILE"}
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