mirror of
https://github.com/MobileGL-Dev/MobileGL
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swung0x48
2d690754dd
- bench.sh's pin_freqs writes /proc/ppm and /proc/gpufreq, which exist on neither 35d0befa (SM8750) nor 3B159D009VZ00000 (MT6993 dropped both for /proc/gpufreqv2); the guard the PROFILE_VERIFIED key exists for was about to be defeated on the device its own comment guessed was safe - pin_device.sh pins big/little/GPU through the nodes each device actually has (Xiaomi: policy6 1958400 / policy0 1555200 / kgsl pwrlevel 0; Oppo: policy4 2000000 + policy7 2000000 / policy0 1600000 / gpufreqv2 fix_target_opp_index 0), checks only against its own pins because ColorOS moves stock maxima by itself, and refuses to call a zero-key read a verdict - both profiles are PROFILE_VERIFIED=1 on 30 s pinned windows with zero drift; the evidence and the two things not verified (Oppo GPU held at DVFS-request level only, no full bench window) are in docs/Disaggregated/devices/pin-verification-2026-09-07.md
367 lines
18 KiB
Bash
Executable File
367 lines
18 KiB
Bash
Executable File
#!/usr/bin/env bash
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# pin_device.sh <serial> pin|unpin|check
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#
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# Frequency pinning for the two disaggregation-campaign devices, standalone: pure adb + su, no
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# sourcing of a device profile, no dependency on bench.sh. It exists because bench.sh's
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# pin_freqs()/unpin_freqs() are MediaTek-legacy-only (/proc/ppm + /proc/gpufreq) and NEITHER of
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# these two devices has those paths - on both of them bench.sh's pin writes into nothing and
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# exits 0, which is precisely the silent "the run looks pinned but is not" failure the
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# PROFILE_VERIFIED guard was built to catch. So: pin here, run bench.sh with --no-pin, and use
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# `check` in place of the pin-integrity fields bench.sh would otherwise have sampled.
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#
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# ./pin_device.sh 35d0befa pin
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# ./bench.sh --device devices/xiaomi-adreno830.env --backend magma --no-pin
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# ./pin_device.sh 35d0befa check || echo "PIN DRIFTED - discard this run"
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# ./pin_device.sh 35d0befa unpin
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#
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# All three actions print the live big/little/GPU frequencies, the governors and the gate
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# temperature, so the output of `pin` and of `unpin` is itself the before/after evidence.
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#
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# check exit codes (deliberately three-valued: "no pin at all" and "a pin that slipped" are
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# different facts, and collapsing them to one non-zero would hide which one happened):
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# 0 PINNED - every pinned node is at its pin AND every live frequency equals it
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# 1 DRIFT - the device is partly pinned, or a live frequency has left its pin. The
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# dangerous state: a run overlapping this is not comparable. Discard it.
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# 2 UNPINNED- no node is at a pin this script set; the vendor governors have their range
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# back. That is the correct state to leave a device in, and it is still non-zero
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# so that `pin_device.sh X check && measure` cannot silently measure unpinned.
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# Note this is asserted against OUR pins, not against the stock range: ColorOS
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# moves policy4's max on its own within seconds of a release, so an exact-stock
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# comparison reported DRIFT on a correctly unpinned device.
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#
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# Values were read off each device on 2026-09-07 and confirmed against a pinned window; see
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# ../REPORT.md and the matching *.env profiles. Stock values are hardcoded rather than sampled
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# at pin time on purpose - a restore that reads "stock" from an already-pinned device would
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# make the pin permanent, which is how a device silently stays clamped across a reboot-less
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# week of runs.
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set -u -o pipefail
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# Git Bash: stop MSYS rewriting /sys/... and /proc/... arguments into C:/Program Files/...
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export MSYS_NO_PATHCONV=1 MSYS2_ARG_CONV_EXCL='*'
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SERIAL=${1:-}
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ACTION=${2:-}
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case "$ACTION" in
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pin|unpin|check) ;;
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*) echo "usage: $0 <serial> pin|unpin|check" >&2; exit 64 ;;
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esac
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CPUFREQ=/sys/devices/system/cpu/cpufreq
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# ---------------------------------------------------------------------------------------------
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# Device table. Everything device-specific lives here; the actions below are generic.
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# POLICIES - "label:policy:pinned_khz:stock_min:stock_max" per cpufreq policy to pin.
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# Every policy that can run a hot thread must be listed, not just the two
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# the protocol reports: on MT6993 an unpinned policy7 at 4.21 GHz defeats
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# the entire pin the moment the scheduler lands a thread on it.
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# THERMAL_TYPE - matched against /sys/class/thermal/thermal_zone*/type by name, never by
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# zone number: numbering is not stable across boots.
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# ---------------------------------------------------------------------------------------------
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case "$SERIAL" in
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35d0befa) # Xiaomi 24129PN74C, Snapdragon 8 Elite (SM8750), Adreno 830v2
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DEV_NAME="Xiaomi 24129PN74C / SM8750 / Adreno 830v2"
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GPU_STYLE=kgsl
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POLICIES="big:policy6:1958400:1017600:2841600 little:policy0:1555200:556800:2745600"
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THERMAL_TYPE=cpuss-0-0
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KGSL=/sys/class/kgsl/kgsl-3d0
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GPU_PIN_LEVEL=0 # pwrlevel 0 = 1100 MHz, above the stock devfreq ceiling of 1050
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GPU_STOCK_MIN_LEVEL=12
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GPU_STOCK_MAX_LEVEL=0
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GPU_PINNED_FREQ=1100000000 # gpuclk is in Hz on kgsl, NOT kHz
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GPU_FREQ_UNIT=Hz
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;;
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3B159D009VZ00000) # Oppo PLG110 / ColorOS, MediaTek MT6993 (Dimensity 9500), Mali
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DEV_NAME="Oppo PLG110 / MT6993 / Mali (gpufreqv2)"
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GPU_STYLE=gpufreqv2
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# 2000000 / 1600000 are the nearest available OPPs to the protocol's 1958400 / 1555200
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# (+2.1% / +2.9%); neither target is an exact step on this part.
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POLICIES="big:policy4:2000000:300000:3500000 little:policy0:1600000:300000:2100000 extra:policy7:2000000:300000:3200000"
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THERMAL_TYPE=soc_max
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GPU_FIX_NODE=/proc/gpufreqv2/fix_target_opp_index
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GPU_PIN_LEVEL=0 # OPP index 0 = 1716000 kHz, the top working OPP
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GPU_PINNED_FREQ=1716000
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GPU_FREQ_UNIT=kHz
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;;
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*)
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echo "$0: unknown serial '$SERIAL'." >&2
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echo "Known: 35d0befa (Xiaomi/Adreno830), 3B159D009VZ00000 (Oppo/Mali)." >&2
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echo "Refusing to guess: the pin path differs per SoC and a wrong one fails silently." >&2
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exit 64 ;;
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esac
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A="adb -s $SERIAL"
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# Quote the whole su invocation for the DEVICE shell, or the redirect runs unprivileged.
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su_() { $A shell "su -c '$*'" 2>&1 | tr -d '\r'; }
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$A get-state >/dev/null 2>&1 || { echo "$0: device $SERIAL is not connected" >&2; exit 65; }
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[ "$(su_ 'id -u')" = "0" ] || { echo "$0: no root on $SERIAL (su failed)" >&2; exit 65; }
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# --- read live state in ONE device round trip -------------------------------------------------
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# Every read goes through su: on the Oppo the cpufreq nodes are 0660 system:system and a plain
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# `adb shell cat scaling_governor` answers "Permission denied", which a careless parser reads
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# as an empty governor rather than as a failure.
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read_state() {
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local script="" spec label pol
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for spec in $POLICIES; do
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IFS=: read -r label pol _ _ _ <<<"$spec"
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script="$script echo \"${label}_gov=\$(cat $CPUFREQ/$pol/scaling_governor)\";"
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script="$script echo \"${label}_min=\$(cat $CPUFREQ/$pol/scaling_min_freq)\";"
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script="$script echo \"${label}_max=\$(cat $CPUFREQ/$pol/scaling_max_freq)\";"
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script="$script echo \"${label}_cur=\$(cat $CPUFREQ/$pol/scaling_cur_freq)\";"
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done
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script="$script for tz in /sys/class/thermal/thermal_zone*; do"
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script="$script if [ \"\$(cat \$tz/type 2>/dev/null)\" = \"$THERMAL_TYPE\" ]; then"
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script="$script echo \"temp_mc=\$(cat \$tz/temp)\"; echo \"temp_zone=\$tz\"; break; fi; done;"
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# Emit the GPU nodes RAW and pick them apart locally. The device-side script is delivered as
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# `su -c '<script>'`, so a single quote anywhere inside it (an awk program, a sed expression)
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# closes that quoting and the whole read silently returns nothing - which `check` then reports
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# as every node being "neither pin nor stock", i.e. a false DRIFT on a perfectly pinned device.
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# Parsing on this side keeps the device-side text quote-free.
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if [ "$GPU_STYLE" = kgsl ]; then
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script="$script echo \"gpu_minlvl=\$(cat $KGSL/min_pwrlevel)\";"
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script="$script echo \"gpu_maxlvl=\$(cat $KGSL/max_pwrlevel)\";"
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script="$script echo \"gpu_freqraw=\$(cat $KGSL/gpuclk)\";"
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script="$script echo \"gpu_busyraw=\$(cat $KGSL/gpu_busy_percentage)\";"
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else
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script="$script echo \"gpu_fixraw=\$(cat $GPU_FIX_NODE | head -1)\";"
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script="$script echo \"gpu_freqraw=\$(cat /sys/kernel/ged/hal/current_freqency | head -1)\";"
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script="$script echo \"gpu_busyraw=\$(cat /sys/kernel/ged/hal/gpu_utilization | head -1)\";"
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fi
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su_ "$script"
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}
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# gpuclk -> "222000000" ($NF)
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# current_freqency -> "<opp_index> <freq_khz>" ($NF)
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# gpu_busy_percentage -> "26 %" / gpu_utilization -> "7 0 100" ($1)
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# fix_target_opp_index -> "[GPUFREQ-DEBUG] fix GPU/STACK OPP index: 0/0" when pinned
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# -> "[GPUFREQ-DEBUG] fix GPU/STACK OPP index is disabled" when not
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derive_gpu() {
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ST[gpu_freq]=$(echo "${ST[gpu_freqraw]:-}" | awk '{print $NF}')
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ST[gpu_busy]=$(echo "${ST[gpu_busyraw]:-}" | awk '{print $1}')
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[ "$GPU_STYLE" = kgsl ] && return 0
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case "${ST[gpu_fixraw]:-}" in
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*"is disabled"*) ST[gpu_fix]=off ;;
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*"index: "*) ST[gpu_fix]=$(echo "${ST[gpu_fixraw]}" | sed -e 's/.*index: //' -e 's|/.*||') ;;
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*) ST[gpu_fix]="<unread>" ;;
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esac
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}
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declare -A ST
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load_state() {
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local line k v
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ST=()
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while IFS= read -r line; do
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k=${line%%=*}; v=${line#*=}
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case "$line" in *=*) ST[$k]=$v ;; esac
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done < <(read_state)
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# A read that came back empty is a BROKEN READ, not an unpinned device and not a drifted one.
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# Without this the classifier sees every node as "neither pin nor stock" and prints DRIFT,
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# which reads as "your pin slipped" when the truth is "this script could not see the device".
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# Bail loudly instead: a pin/unpin whose verification cannot run must not look like a verdict.
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if [ "${#ST[@]}" -eq 0 ]; then
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echo "$0: could not read any state from $SERIAL (su read returned nothing)." >&2
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echo " The device-side read is delivered as su -c '<script>'; check that nothing in it" >&2
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echo " contains a single quote, and that su still works: adb -s $SERIAL shell su -c id" >&2
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exit 66
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fi
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derive_gpu
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}
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field() { echo "${ST[$1]:-<unread>}"; }
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print_state() {
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local spec label pol pin smin smax
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echo " device : $DEV_NAME ($SERIAL)"
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for spec in $POLICIES; do
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IFS=: read -r label pol pin smin smax <<<"$spec"
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printf " %-7s %-8s gov=%-10s cur=%-9s min=%-9s max=%-9s (pin %s / stock %s-%s)\n" \
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"$label" "$pol" "$(field ${label}_gov)" "$(field ${label}_cur)" \
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"$(field ${label}_min)" "$(field ${label}_max)" "$pin" "$smin" "$smax"
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done
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if [ "$GPU_STYLE" = kgsl ]; then
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printf " %-7s %-8s pwrlevel=%s..%s freq=%s %s busy=%s%% (pin lvl %s = %s %s / stock lvl %s..%s)\n" \
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gpu kgsl-3d0 "$(field gpu_maxlvl)" "$(field gpu_minlvl)" "$(field gpu_freq)" "$GPU_FREQ_UNIT" \
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"$(field gpu_busy)" "$GPU_PIN_LEVEL" "$GPU_PINNED_FREQ" "$GPU_FREQ_UNIT" \
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"$GPU_STOCK_MAX_LEVEL" "$GPU_STOCK_MIN_LEVEL"
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else
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printf " %-7s %-8s fix_opp=%-4s freq=%s %s busy=%s%% (pin idx %s = %s %s / stock off)\n" \
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gpu gpufreqv2 "$(field gpu_fix)" "$(field gpu_freq)" "$GPU_FREQ_UNIT" "$(field gpu_busy)" \
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"$GPU_PIN_LEVEL" "$GPU_PINNED_FREQ" "$GPU_FREQ_UNIT"
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fi
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printf " %-7s %-8s %s mC = %s C (%s)\n" thermal "$THERMAL_TYPE" \
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"$(field temp_mc)" "$(awk -v t="$(field temp_mc)" 'BEGIN{if(t+0==0){print "?"}else{printf "%.1f", t/1000}}')" \
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"$(field temp_zone)"
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}
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# --- actions ----------------------------------------------------------------------------------
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# Write order is min -> floor, then max -> target, then min -> target. Setting min above the
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# current max (or max below the current min) is clamped by cpufreq, so a naive two-write pin
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# succeeds on one device and silently half-applies on another depending on where stock sits
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# relative to the target. Dropping min to the policy floor first makes the order stock-agnostic.
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do_pin() {
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local spec label pol pin smin smax script=""
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for spec in $POLICIES; do
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IFS=: read -r label pol pin smin smax <<<"$spec"
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script="$script echo \$(cat $CPUFREQ/$pol/cpuinfo_min_freq) > $CPUFREQ/$pol/scaling_min_freq;"
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script="$script echo $pin > $CPUFREQ/$pol/scaling_max_freq;"
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script="$script echo $pin > $CPUFREQ/$pol/scaling_min_freq;"
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done
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su_ "$script" >/dev/null
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if [ "$GPU_STYLE" = kgsl ]; then
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# Collapse the pwrlevel range onto level 0. This also unlocks the top step: the devfreq
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# governor's own max_freq sits one step below it, so a devfreq min_freq/max_freq pin cannot
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# reach 1100 MHz at all.
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su_ "echo $GPU_PIN_LEVEL > $KGSL/min_pwrlevel; echo $GPU_PIN_LEVEL > $KGSL/max_pwrlevel" >/dev/null
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else
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su_ "echo $GPU_PIN_LEVEL > $GPU_FIX_NODE" >/dev/null
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fi
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}
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do_unpin() {
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local spec label pol pin smin smax script=""
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for spec in $POLICIES; do
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IFS=: read -r label pol pin smin smax <<<"$spec"
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script="$script echo \$(cat $CPUFREQ/$pol/cpuinfo_min_freq) > $CPUFREQ/$pol/scaling_min_freq;"
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script="$script echo $smax > $CPUFREQ/$pol/scaling_max_freq;"
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script="$script echo $smin > $CPUFREQ/$pol/scaling_min_freq;"
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done
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su_ "$script" >/dev/null
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if [ "$GPU_STYLE" = kgsl ]; then
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su_ "echo $GPU_STOCK_MIN_LEVEL > $KGSL/min_pwrlevel; echo $GPU_STOCK_MAX_LEVEL > $KGSL/max_pwrlevel" >/dev/null
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else
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su_ "echo -1 > $GPU_FIX_NODE" >/dev/null
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fi
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}
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# Classify every node this script writes as at-pin or not-at-pin.
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#
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# NOT "at-pin / at-stock / neither". An earlier version compared against the hardcoded stock
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# range and called anything else DRIFT, and ColorOS broke it within seconds: after an unpin
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# restored policy4 to 300000-3500000, the Oppo performance daemon lowered the max to 3200000 on
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# its own, and the next check reported DRIFT on a correctly released device. Stock maxima are
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# daemon-managed and are NOT constants. So the only thing asserted here is our own pin - which
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# is the question that actually matters ("is this run pinned?"). The hardcoded stock values
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# still drive the restore path, where handing the range back to the governor is all they have
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# to do.
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do_check() {
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local spec label pol pin smin smax n_pin=0 n_stock=0 n_other=0 drift="" notes=""
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for spec in $POLICIES; do
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IFS=: read -r label pol pin smin smax <<<"$spec"
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local mn mx cu
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mn=$(field ${label}_min); mx=$(field ${label}_max); cu=$(field ${label}_cur)
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if [ "$mn" = "$pin" ] && [ "$mx" = "$pin" ]; then
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n_pin=$((n_pin+1))
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# min==max leaves the governor no room, so a cur that is not the pin means something
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# outside cpufreq (thermal engine, vendor limiter) is overriding it.
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[ "$cu" = "$pin" ] || drift="$drift ${label}(${pol}) pinned to $pin but scaling_cur_freq=$cu;"
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elif [ "$mn" = "$mx" ]; then
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# Clamped, but not by us. Someone else (game mode, thermal engine) is holding this policy
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# at a fixed frequency, which is just as fatal to comparability as a missing pin.
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n_other=$((n_other+1))
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drift="$drift ${label}(${pol}) is clamped at $mn by something other than this script (our pin is $pin);"
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else
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n_stock=$((n_stock+1))
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[ "$mn" = "$smin" ] && [ "$mx" = "$smax" ] || \
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notes="$notes ${label}(${pol}) unpinned, range $mn-$mx (recorded stock $smin-$smax, which vendor daemons move);"
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fi
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done
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if [ "$GPU_STYLE" = kgsl ]; then
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if [ "$(field gpu_minlvl)" = "$GPU_PIN_LEVEL" ] && [ "$(field gpu_maxlvl)" = "$GPU_PIN_LEVEL" ]; then
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n_pin=$((n_pin+1))
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[ "$(field gpu_freq)" = "$GPU_PINNED_FREQ" ] || \
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drift="$drift gpu pinned to pwrlevel $GPU_PIN_LEVEL but gpuclk=$(field gpu_freq) (expected $GPU_PINNED_FREQ);"
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elif [ "$(field gpu_minlvl)" = "$GPU_STOCK_MIN_LEVEL" ] && [ "$(field gpu_maxlvl)" = "$GPU_STOCK_MAX_LEVEL" ]; then
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n_stock=$((n_stock+1))
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else
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n_other=$((n_other+1))
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drift="$drift gpu pwrlevel range $(field gpu_maxlvl)..$(field gpu_minlvl) is neither pin nor stock;"
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fi
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else
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if [ "$(field gpu_fix)" = "$GPU_PIN_LEVEL" ]; then
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n_pin=$((n_pin+1))
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# The GPU parks its rail when idle and then reports a fallback frequency; only treat a
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# mismatch as drift while the GPU is actually doing something.
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if [ "$(field gpu_freq)" != "$GPU_PINNED_FREQ" ]; then
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if [ "$(field gpu_busy)" = "0" ]; then
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notes="$notes gpu fixed at OPP $GPU_PIN_LEVEL, freq reads $(field gpu_freq) with busy=0 - rail parked, not drift;"
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else
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drift="$drift gpu fixed at OPP $GPU_PIN_LEVEL but current_freqency=$(field gpu_freq) (expected $GPU_PINNED_FREQ) at busy=$(field gpu_busy)%;"
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fi
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fi
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elif [ "$(field gpu_fix)" = "off" ]; then
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n_stock=$((n_stock+1))
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else
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n_other=$((n_other+1))
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drift="$drift gpu fix_target_opp_index='$(field gpu_fix)' is neither $GPU_PIN_LEVEL nor off;"
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fi
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fi
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# Notes are commentary (a parked GPU rail is not a slipped pin) and are collected in their own
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# variable rather than tagged inside $drift and filtered back out: the glob that would strip
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# them is greedy, so it could swallow a real drift message that happened to follow one.
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show() { [ -n "${1// /}" ] && echo "$1" | tr ';' '\n' | sed -e "s|^ *| $2|" -e "/^ *$2 *\$/d"; return 0; }
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echo
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if [ -n "${drift// /}" ]; then
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echo " VERDICT: DRIFT"
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show "$drift" "- "; show "$notes" "note: "
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return 1
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fi
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if [ "$n_other" -gt 0 ] || { [ "$n_pin" -gt 0 ] && [ "$n_stock" -gt 0 ]; }; then
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echo " VERDICT: DRIFT (partially pinned: $n_pin at pin, $n_stock at stock, $n_other neither)"
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show "$notes" "note: "
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return 1
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fi
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if [ "$n_pin" -gt 0 ] && [ "$n_stock" -eq 0 ]; then
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echo " VERDICT: PINNED - all $n_pin pinned nodes at their pins, live frequencies match."
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show "$notes" "note: "
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return 0
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fi
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echo " VERDICT: UNPINNED - none of the $n_stock nodes is at a pin this script set; the vendor"
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echo " governors have their range back and nothing this script writes is in effect."
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show "$notes" "note: "
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return 2
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}
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# --- main -------------------------------------------------------------------------------------
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case "$ACTION" in
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check)
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load_state
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echo "== check =="
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print_state
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do_check
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exit $?
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|
;;
|
|
pin)
|
|
load_state
|
|
echo "== before pin =="
|
|
print_state
|
|
do_pin
|
|
sleep 1
|
|
load_state
|
|
echo
|
|
echo "== after pin =="
|
|
print_state
|
|
do_check
|
|
rc=$?
|
|
[ "$rc" = 0 ] || echo " (pin did not take - do not measure against this)" >&2
|
|
exit $rc
|
|
;;
|
|
unpin)
|
|
load_state
|
|
echo "== before unpin =="
|
|
print_state
|
|
do_unpin
|
|
sleep 1
|
|
load_state
|
|
echo
|
|
echo "== after unpin =="
|
|
print_state
|
|
do_check
|
|
rc=$?
|
|
# 2 (UNPINNED) is success for this action.
|
|
[ "$rc" = 2 ] && exit 0
|
|
echo " (unpin did not fully restore - the device is still clamped)" >&2
|
|
exit 1
|
|
;;
|
|
esac
|