On Sat, Aug 26, 2023 at 07:25:43PM +0800, Inochi Amaoto wrote: > >On Sat, Aug 26, 2023 at 04:38:53PM +0800, Inochi Amaoto wrote: > >> D1 has several pmu events supported by opensbi. > >> These events can be used by perf for profiling. > >> > >> Signed-off-by: Inochi Amaoto <inochiama@xxxxxxxxxxx> > > > >Could you please include a link to some documentation as to where these > >values came from? I know several people have had some trouble with > >understanding the pmu DT stuff & having some documentation would make > >this an in-tree end-to-end example. > The DT field of riscv,pmu for opensbi can be found on: > https://github.com/riscv-software-src/opensbi/blob/master/docs/pmu_support.md There's an actual dt-binding for this. > The value can be found in the R1S0 version of C906 documentation: > https://dl.linux-sunxi.org/D1/Xuantie_C906_R1S0_User_Manual.pdf > > The meaning of T-HEAD events can be found in this patch: > https://lore.kernel.org/linux-perf-users/IA1PR20MB4953DD82D0116EC291C21777BBE2A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > The patch above also provides documentation for T-HEAD events and a example > that shows how to use perf with T-HEAD events. What I meant was can you provide links to this in the commit messages so that people have a way to find the documentation.
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