From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754714AbaGNKGp (ORCPT ); Mon, 14 Jul 2014 06:06:45 -0400 Received: from mga01.intel.com ([192.55.52.88]:30240 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754637AbaGNKGR (ORCPT ); Mon, 14 Jul 2014 06:06:17 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,657,1400050800"; d="scan'208";a="561434938" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, David Ahern , Frederic Weisbecker , Jiri Olsa , Namhyung Kim , Paul Mackerras , Stephane Eranian Subject: [PATCH 40/41] perf tools: Move rdtsc() function Date: Mon, 14 Jul 2014 13:03:04 +0300 Message-Id: <1405332185-4050-41-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1405332185-4050-1-git-send-email-adrian.hunter@intel.com> References: <1405332185-4050-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Move the rdtsc() function so it can be reusued. Signed-off-by: Adrian Hunter --- tools/perf/arch/x86/util/tsc.c | 9 +++++++++ tools/perf/tests/perf-time-to-tsc.c | 9 --------- tools/perf/util/tsc.c | 5 +++++ tools/perf/util/tsc.h | 1 + 4 files changed, 15 insertions(+), 9 deletions(-) diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c index 3655f24..fd28684 100644 --- a/tools/perf/arch/x86/util/tsc.c +++ b/tools/perf/arch/x86/util/tsc.c @@ -37,3 +37,12 @@ int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, return 0; } + +u64 rdtsc(void) +{ + unsigned int low, high; + + asm volatile("rdtsc" : "=a" (low), "=d" (high)); + + return low | ((u64)high) << 32; +} diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c index 0372f6e..f238442 100644 --- a/tools/perf/tests/perf-time-to-tsc.c +++ b/tools/perf/tests/perf-time-to-tsc.c @@ -25,15 +25,6 @@ } \ } -static u64 rdtsc(void) -{ - unsigned int low, high; - - asm volatile("rdtsc" : "=a" (low), "=d" (high)); - - return low | ((u64)high) << 32; -} - /** * test__perf_time_to_tsc - test converting perf time to TSC. * diff --git a/tools/perf/util/tsc.c b/tools/perf/util/tsc.c index ef4749836..4d4210d 100644 --- a/tools/perf/util/tsc.c +++ b/tools/perf/util/tsc.c @@ -23,3 +23,8 @@ u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc) return tc->time_zero + quot * tc->time_mult + ((rem * tc->time_mult) >> tc->time_shift); } + +u64 __weak rdtsc(void) +{ + return 0; +} diff --git a/tools/perf/util/tsc.h b/tools/perf/util/tsc.h index 4eca848..a8b78f1 100644 --- a/tools/perf/util/tsc.h +++ b/tools/perf/util/tsc.h @@ -7,5 +7,6 @@ u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); +u64 rdtsc(void); #endif -- 1.8.3.2