[PATCH] Added perf functionality to mmdc driver

2016-08-06 Thread Zhengyu Shen
$ perf stat -e mmdc/busy-cycles/,mmdc/read-accesses/,mmdc/read-bytes/,mmdc/total-cycles/,mmdc/write-accesses/,mmdc/write-bytes/ dd if=/dev/zero of=/dev/null bs=1M count=5000 Performance counter stats for 'dd if=/dev/zero of=/dev/null bs=1M count=5000': 898021787 mmdc/busy-cycles/

Re: [PATCH] Added perf functionality to mmdc driver

2016-08-05 Thread Mark Rutland
On Fri, Aug 05, 2016 at 09:35:25AM -0500, Zhengyu Shen wrote: > $ perf stat -e > mmdc/busy-cycles/,mmdc/read-accesses/,mmdc/read-bytes/,mmdc/total-cycles/,mmdc/write-accesses/,mmdc/write-bytes/ > dd if=/dev/zero of=/dev/null bs=1M count=5000 > Performance counter stats for 'dd if=/dev/zero of=/de

Re: [PATCH] Added perf functionality to mmdc driver

2016-08-05 Thread Peter Zijlstra
On Fri, Aug 05, 2016 at 09:35:25AM -0500, Zhengyu Shen wrote: > $ perf stat -e > mmdc/busy-cycles/,mmdc/read-accesses/,mmdc/read-bytes/,mmdc/total-cycles/,mmdc/write-accesses/,mmdc/write-bytes/ > dd if=/dev/zero of=/dev/null bs=1M count=5000 > Performance counter stats for 'dd if=/dev/zero of=/de

Re: [PATCH] Added perf functionality to mmdc driver

2016-08-05 Thread Zhi Li
On Fri, Aug 5, 2016 at 9:35 AM, Zhengyu Shen wrote: > $ perf stat -e > mmdc/busy-cycles/,mmdc/read-accesses/,mmdc/read-bytes/,mmdc/total-cycles/,mmdc/write-accesses/,mmdc/write-bytes/ > dd if=/dev/zero of=/dev/null bs=1M count=5000 > Performance counter stats for 'dd if=/dev/zero of=/dev/null bs