Remove first 3 lines of perf list output and join the remaining ones together with ,
alias pl-csv='tail -n+3 | grep -v ^$ | awk '\''{print $1}'\'' | tr "\\n" "," | sed -e s/,$//'
➝ perf stat -e `perf list L1* | pl-csv` curl https://perf.wiki.kernel.org/index.php/Main_Page > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 14138 0 14138 0 0 13289 0 --:--:-- 0:00:01 --:--:-- 13300
Performance counter stats for 'curl https://perf.wiki.kernel.org/index.php/Main_Page':
15,095,849 L1-dcache-loads [47.02%]
465,219 L1-dcache-load-misses # 3.08% of all L1-dcache hits [48.99%]
7,423,453 L1-dcache-stores [43.50%]
82,369 L1-dcache-store-misses [53.22%]
244,820 L1-dcache-prefetches [51.73%]
62,057 L1-dcache-prefetch-misses [36.76%]
26,752,656 L1-icache-loads [47.44%]
800,685 L1-icache-load-misses # 2.99% of all L1-icache hits [48.65%]
1.073100167 seconds time elapsed