Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751504AbaAMK2r (ORCPT ); Mon, 13 Jan 2014 05:28:47 -0500 Received: from guitar.tcltek.co.il ([192.115.133.116]:54224 "EHLO mx.tkos.co.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750959AbaAMK2o (ORCPT ); Mon, 13 Jan 2014 05:28:44 -0500 From: Baruch Siach To: Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, linux-xtensa@linux-xtensa.org, Baruch Siach Subject: [PATCH v3] perf: add support for the xtensa architecture Date: Mon, 13 Jan 2014 12:27:35 +0200 Message-Id: X-Mailer: git-send-email 1.8.5.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tested using kernel tracepoints on a QEMU simulated environment. Kernel support for perf depends on the patch "xtensa: enable HAVE_PERF_EVENTS", which is scheduled for v3.14. Hardware performance counters are not supported under xtensa yet. Acked-by: Max Filippov Signed-off-by: Baruch Siach --- v2: use the "core ID" field from /proc/cpuinfo (Max Filippov) v3: add testing and kernel dependency information (Ingo Molnar) --- tools/perf/perf.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/perf/perf.h b/tools/perf/perf.h index b079304bd53d..e441864dbe03 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -132,6 +132,13 @@ #define CPUINFO_PROC "CPU" #endif +#ifdef __xtensa__ +#define mb() asm volatile("memw" ::: "memory") +#define wmb() asm volatile("memw" ::: "memory") +#define rmb() asm volatile("" ::: "memory") +#define CPUINFO_PROC "core ID" +#endif + #define barrier() asm volatile ("" ::: "memory") #ifndef cpu_relax -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/