On Mon, May 07, 2018 at 03:56:59PM +0200, Geert Uytterhoeven wrote: > Hi Simon, Magnus, > > This patch series enables support for the ARM Performance Monitor Units > in Cortex-A7, Cortex-A9, and Cortex-A15 CPU cores on Renesas RZ/A1, > R-Car Gen2, and RZ/G1 SoCs. This allows for better performance analysis > using the "perf" tool. > > Sample output of "perf stat echo" on r8a7791/koelsch: > > - Before: > > Performance counter stats for 'echo': > > 2,636300 task-clock (msec) # 0,265 CPUs utilized > 8 context-switches # 0,003 M/sec > 0 cpu-migrations # 0,000 K/sec > 43 page-faults # 0,016 M/sec > <not supported> cycles > <not supported> stalled-cycles-frontend > <not supported> stalled-cycles-backend > <not supported> instructions > <not supported> branches > <not supported> branch-misses > > 0,009960300 seconds time elapsed > > - After: > > Performance counter stats for 'echo': > > 2,455400 task-clock (msec) # 0,273 CPUs utilized > 3 context-switches # 0,001 M/sec > 0 cpu-migrations # 0,000 K/sec > 45 page-faults # 0,018 M/sec > 3.556.784 cycles # 1,449 GHz > <not supported> stalled-cycles-frontend > <not supported> stalled-cycles-backend > 1.350.480 instructions # 0,38 insns per cycle > 335.542 branches # 136,655 M/sec > 18.075 branch-misses # 5,39% of all branches > > 0,008987900 seconds time elapsed > > Still missing: > - R-Mobile APE6 (no PMU interrupt documented), > - R-Car M1A and H1 (the PMU interrupt seems to be routed to the legacy > SH INTC only?), > - RZ/G1C (SMP support not yet upstream). > > This has been tested on r8a7791/koelsch, and boot-tested on > r7s72100/genmai, r8a7790/lager, r8a7792/blanche, and r8a7794/silk. Thanks, applied. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
