forked from Minki/linux
a37f3b8856
Currently we don't support shadow stat for hybrid.
root@ssp-pwrt-002:~# ./perf stat -e cycles,instructions -a -- sleep 1
Performance counter stats for 'system wide':
12,883,109,591 cpu_core/cycles/
6,405,163,221 cpu_atom/cycles/
555,553,778 cpu_core/instructions/
841,158,734 cpu_atom/instructions/
1.002644773 seconds time elapsed
Now there is no shadow stat 'insn per cycle' reported. We will support
it later and now just skip the 'perf stat metrics (shadow stat) test'.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210427070139.25256-26-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
82 lines
1.5 KiB
Bash
Executable File
82 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# perf stat metrics (shadow stat) test
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# skip if system-wide mode is forbidden
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perf stat -a true > /dev/null 2>&1 || exit 2
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# skip if on hybrid platform
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perf stat -a -e cycles sleep 1 2>&1 | grep -e cpu_core && exit 2
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test_global_aggr()
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{
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perf stat -a --no-big-num -e cycles,instructions sleep 1 2>&1 | \
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grep -e cycles -e instructions | \
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while read num evt hash ipc rest
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do
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# skip not counted events
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if [ "$num" = "<not" ]; then
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continue
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fi
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# save cycles count
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if [ "$evt" = "cycles" ]; then
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cyc=$num
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continue
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fi
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# skip if no cycles
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if [ -z "$cyc" ]; then
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continue
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fi
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# use printf for rounding and a leading zero
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res=`printf "%.2f" $(echo "scale=6; $num / $cyc" | bc -q)`
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if [ "$ipc" != "$res" ]; then
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echo "IPC is different: $res != $ipc ($num / $cyc)"
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exit 1
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fi
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done
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}
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test_no_aggr()
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{
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perf stat -a -A --no-big-num -e cycles,instructions sleep 1 2>&1 | \
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grep ^CPU | \
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while read cpu num evt hash ipc rest
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do
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# skip not counted events
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if [ "$num" = "<not" ]; then
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continue
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fi
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# save cycles count
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if [ "$evt" = "cycles" ]; then
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results="$results $cpu:$num"
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continue
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fi
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cyc=${results##* $cpu:}
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cyc=${cyc%% *}
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# skip if no cycles
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if [ -z "$cyc" ]; then
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continue
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fi
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# use printf for rounding and a leading zero
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res=`printf "%.2f" $(echo "scale=6; $num / $cyc" | bc -q)`
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if [ "$ipc" != "$res" ]; then
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echo "IPC is different for $cpu: $res != $ipc ($num / $cyc)"
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exit 1
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fi
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done
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}
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test_global_aggr
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test_no_aggr
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exit 0
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