linux-kernel - [PATCH v4 0/2] perf: riscv: Preliminary Perf Event Support on RISC-V

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Message-ID: <1524017523-25076-1-git-send-email-alankao@andestech.com>
Date:   Wed, 18 Apr 2018 10:12:01 +0800
From:   Alan Kao <alankao@...estech.com>
To:     Palmer Dabbelt <palmer@...ive.com>, Albert Ou <albert@...ive.com>,
        "Peter Zijlstra" <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        "Arnaldo Carvalho de Melo" <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        "Namhyung Kim" <namhyung@...nel.org>,
        Alex Solomatnikov <sols@...ive.com>,
        "Jonathan Corbet" <corbet@....net>,
        <linux-riscv@...ts.infradead.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Alan Kao <alankao@...estech.com>,
        Greentime Hu <greentime@...estech.com>,
        Nick Hu <nickhu@...estech.com>
Subject: [PATCH v4 0/2] perf: riscv: Preliminary Perf Event Support on RISC-V

This implements the baseline PMU for RISC-V platforms.

To ease future PMU portings, a guide is also written, containing
perf concepts, arch porting practices and some hints.

Changes in v4:
 - Fix several compilation errors.  Sorry for that.
 - Raise a warning in the write_counter body.

Changes in v3:
 - Fix typos in the document.
 - Change the initialization routine from statically assigning PMU to
   device-tree-based methods, and set default to the PMU proposed in
   this patch.

Changes in v2:
 - Fix the bug reported by Alex, which was caused by not sufficient
   initialization.  Check https://lkml.org/lkml/2018/3/31/251 for the
   discussion.

Alan Kao (2):
  perf: riscv: preliminary RISC-V support
  perf: riscv: Add Document for Future Porting Guide

 Documentation/riscv/pmu.txt         | 249 ++++++++++++++
 arch/riscv/Kconfig                  |  13 +
 arch/riscv/include/asm/perf_event.h |  79 ++++-
 arch/riscv/kernel/Makefile          |   1 +
 arch/riscv/kernel/perf_event.c      | 482 ++++++++++++++++++++++++++++
 5 files changed, 820 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/riscv/pmu.txt
 create mode 100644 arch/riscv/kernel/perf_event.c

-- 
2.17.0