Spdk/scripts/bpftrace.sh

#!/usr/bin/env bash
set -e

if [ $# -lt 2 ]; then
	echo "usage: $0 <pid> <script>"
	exit 1
fi
SCRIPTS_DIR=$(readlink -f $(dirname $0))
BIN_PATH=$(readlink -f /proc/$1/exe)
BPF_SCRIPT=$($SCRIPTS_DIR/bpf/gen_enums.sh)
BPF_SCRIPT+=$(sed "s#__EXE__#${BIN_PATH}#g" "${@:2}" | sed "s#__PID__#${1}#g")
if [ -n "$ECHO_SCRIPT" ]; then
	echo "$BPF_SCRIPT"
fi
bpftrace -p $1 -e "$BPF_SCRIPT"
scripts: add bpftrace.sh This script simplifies execution of bpftrace scripts for SPDK application analysis. The script should be invoked as: scripts/bpftrace.sh `pidof spdk_tgt` script.bt where 'script.bt' is the name of the bpftrace script you wish to execute. The script helps simplify the following: 1) replace __EXE__ markers in the bpftrace script with the full path of the spdk executable (required for usdt probes); it uses /proc/<pid>/exe to get the full path 2) replace __PID__ markers in the bpftrace script with the PID of the spdk process under analysis - this allows for doing things like filtering system call counts for just the SPDK process 3) invoke bpftrace with the -p <pid> option Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Ib271f26efe4ba326d951a7b30f61b22be755dda7 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7710 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> 2021-04-30 22:14:51 +00:00			`#!/usr/bin/env bash`
nvmf: add USDT probes for subsystem state changes Also add scripts/bpf/nvmf.bt to enable and log these probes. This patch also adds a script that can generate a bpftrace script snippet with string maps for needed enumerations (currently nvmf_tgt_state and spdk_nvmf_subsystem_state). This allows us to dynamically generate this from the source code, and can be extended for other enums we may want to add in the future. Thanks to Michal Berger for converting my original gen_enums.py script into gen_enums.sh! Signed-off-by: Jim Harris <james.r.harris@intel.com> Signed-off-by: Michal Berger <michalx.berger@intel.com> Change-Id: Iff34a6218aef40055ac14932eea5fc00e1c8bcf5 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7194 Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> 2021-02-10 00:04:19 +00:00			`set -e`

scripts: add bpftrace.sh This script simplifies execution of bpftrace scripts for SPDK application analysis. The script should be invoked as: scripts/bpftrace.sh `pidof spdk_tgt` script.bt where 'script.bt' is the name of the bpftrace script you wish to execute. The script helps simplify the following: 1) replace __EXE__ markers in the bpftrace script with the full path of the spdk executable (required for usdt probes); it uses /proc/<pid>/exe to get the full path 2) replace __PID__ markers in the bpftrace script with the PID of the spdk process under analysis - this allows for doing things like filtering system call counts for just the SPDK process 3) invoke bpftrace with the -p <pid> option Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Ib271f26efe4ba326d951a7b30f61b22be755dda7 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7710 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> 2021-04-30 22:14:51 +00:00			`if [ $# -lt 2 ]; then`
			`echo "usage: $0 <pid> <script>"`
			`exit 1`
			`fi`
			`SCRIPTS_DIR=$(readlink -f $(dirname $0))`
			`BIN_PATH=$(readlink -f /proc/$1/exe)`
nvmf: add USDT probes for subsystem state changes Also add scripts/bpf/nvmf.bt to enable and log these probes. This patch also adds a script that can generate a bpftrace script snippet with string maps for needed enumerations (currently nvmf_tgt_state and spdk_nvmf_subsystem_state). This allows us to dynamically generate this from the source code, and can be extended for other enums we may want to add in the future. Thanks to Michal Berger for converting my original gen_enums.py script into gen_enums.sh! Signed-off-by: Jim Harris <james.r.harris@intel.com> Signed-off-by: Michal Berger <michalx.berger@intel.com> Change-Id: Iff34a6218aef40055ac14932eea5fc00e1c8bcf5 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7194 Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> 2021-02-10 00:04:19 +00:00			`BPF_SCRIPT=$($SCRIPTS_DIR/bpf/gen_enums.sh)`
			`BPF_SCRIPT+=$(sed "s#__EXE__#${BIN_PATH}#g" "${@:2}" \| sed "s#__PID__#${1}#g")`
			`if [ -n "$ECHO_SCRIPT" ]; then`
			`echo "$BPF_SCRIPT"`
			`fi`
scripts: add bpftrace.sh This script simplifies execution of bpftrace scripts for SPDK application analysis. The script should be invoked as: scripts/bpftrace.sh `pidof spdk_tgt` script.bt where 'script.bt' is the name of the bpftrace script you wish to execute. The script helps simplify the following: 1) replace __EXE__ markers in the bpftrace script with the full path of the spdk executable (required for usdt probes); it uses /proc/<pid>/exe to get the full path 2) replace __PID__ markers in the bpftrace script with the PID of the spdk process under analysis - this allows for doing things like filtering system call counts for just the SPDK process 3) invoke bpftrace with the -p <pid> option Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Ib271f26efe4ba326d951a7b30f61b22be755dda7 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7710 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> 2021-04-30 22:14:51 +00:00			`bpftrace -p $1 -e "$BPF_SCRIPT"`