From patchwork Fri Mar 8 13:15:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 1909701 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=nr9Uyki0; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Trn1y4lwgz1yWx for ; Sat, 9 Mar 2024 00:24:06 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=nr9Uyki0; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Trn1y2FJzz3w3R for ; Sat, 9 Mar 2024 00:24:06 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=nr9Uyki0; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=192.198.163.9; helo=mgamail.intel.com; envelope-from=adrian.hunter@intel.com; receiver=lists.ozlabs.org) Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Trmt11XcWz3vZq for ; Sat, 9 Mar 2024 00:17:12 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709903833; x=1741439833; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XagHsKZy0o0b/SfCKSGfthtDX1F7t80ikEGTTX3TaPM=; b=nr9Uyki0CPo29IDPn/lBgteBDfL3jcTWKfsnf9LSA3BMVX45+ygM/psa JFgUPb0Z4XjMjfvKlDYYx3fTn5XkZRh0FkjDwsxUlcNVDbq8ivdOfjGdB JlT9mkKejV3QUURE0egHECOSU7ELVDB7GpkOla5HpeHo0BDZPE7T70nuK uKvwI5Ba20Om+JVnLzagM3QjtVbRkkpDJsquFkEljRlbcPDYoqvZgl/e6 I9TT4WKt3O/g6TFETAggCLFRRAyk0y4XefcSzjrayFBYKA2TMEuOILYFb s3hB0u8MZRRbNoNRyjk5Go+7HQVpTaSXlfW5U6+3bRPJhlFxUffSuzur/ Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11006"; a="15342860" X-IronPort-AV: E=Sophos;i="6.07,109,1708416000"; d="scan'208";a="15342860" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2024 05:17:11 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,109,1708416000"; d="scan'208";a="15161586" Received: from ahunter6-mobl1.ger.corp.intel.com (HELO ahunter-VirtualBox.home\044ger.corp.intel.com) ([10.249.46.63]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2024 05:17:04 -0800 From: Adrian Hunter To: Thomas Gleixner Subject: [PATCH 15/19] timekeeping: Fold in timekeeping_delta_to_ns() Date: Fri, 8 Mar 2024 15:15:08 +0200 Message-Id: <20240308131512.44324-16-adrian.hunter@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240308131512.44324-1-adrian.hunter@intel.com> References: <20240308131512.44324-1-adrian.hunter@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , Dave Hansen , John Stultz , "H. Peter Anvin" , Alexander Gordeev , Vincenzo Frascino , linux-s390@vger.kernel.org, Arnd Bergmann , x86@kernel.org, "Aneesh Kumar K.V" , Ingo Molnar , "Naveen N. Rao" , Christian Borntraeger , Vasily Gorbik , Heiko Carstens , Nicholas Piggin , Borislav Petkov , Andy Lutomirski , Bjorn Helgaas , Anna-Maria Behnsen , Stephen Boyd , Randy Dunlap , linux-kernel@vger.kernel.org, Sven Schnelle , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" timekeeping_delta_to_ns() is now called only from timekeeping_cycles_to_ns(), and it is not useful otherwise. Simplify by folding it into timekeeping_cycles_to_ns(). Suggested-by: Thomas Gleixner Signed-off-by: Adrian Hunter --- kernel/time/timekeeping.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 1bbfe1ff8d24..749387f22f0f 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -364,23 +364,12 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock) } /* Timekeeper helper functions. */ - -static inline u64 timekeeping_delta_to_ns(const struct tk_read_base *tkr, u64 delta) -{ - u64 nsec; - - nsec = delta * tkr->mult + tkr->xtime_nsec; - nsec >>= tkr->shift; - - return nsec; -} - static inline u64 timekeeping_cycles_to_ns(const struct tk_read_base *tkr, u64 cycles) { /* Calculate the delta since the last update_wall_time() */ u64 delta = clocksource_delta(cycles, tkr->cycle_last, tkr->mask); - return timekeeping_delta_to_ns(tkr, delta); + return ((delta * tkr->mult) + tkr->xtime_nsec) >> tkr->shift; } static __always_inline u64 __timekeeping_get_ns(const struct tk_read_base *tkr)