From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753765AbeDSX2i (ORCPT ); Thu, 19 Apr 2018 19:28:38 -0400 Received: from exmail.andestech.com ([59.124.169.137]:47086 "EHLO ATCSQR.andestech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753581AbeDSX2g (ORCPT ); Thu, 19 Apr 2018 19:28:36 -0400 From: Alan Kao To: Palmer Dabbelt , Albert Ou , "Peter Zijlstra" , Ingo Molnar , "Arnaldo Carvalho de Melo" , Alexander Shishkin , Jiri Olsa , "Namhyung Kim" , Alex Solomatnikov , Atish Patra , Jonathan Corbet , , , CC: Alan Kao , Greentime Hu , Nick Hu Subject: [PATCH v5 0/2] perf: riscv: Preliminary Perf Event Support on RISC-V Date: Fri, 20 Apr 2018 07:27:48 +0800 Message-ID: <1524180470-8622-1-git-send-email-alankao@andestech.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.0.1.85] X-DNSRBL: X-MAIL: ATCSQR.andestech.com w3JNLVGI003066 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 v5: - Fix patch errors from checkpatch.pl. 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 | 485 ++++++++++++++++++++++++++++ 5 files changed, 823 insertions(+), 4 deletions(-) create mode 100644 Documentation/riscv/pmu.txt create mode 100644 arch/riscv/kernel/perf_event.c -- 2.17.0