From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B757DC433F5 for ; Mon, 24 Jan 2022 20:16:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=w088NSe0h/eW9vEeg8C1+ArgnI30in3AgI49ilSjUxY=; b=jSevm/jXOh0eUl rSJGWgTpXYWJUWwc0C+bntSreCfRgwx9mDhzF/Drgw1rITBL3F5SirCEFFIn2G7N1fITyBfZLQka7 ZBqLdctPwRO/bnY+aipz+uBdy4kwcwx/1HtwKlRrxMeVBZAXQwDYuV8vDO8+echXzDPMfctUTTgJh fzjQIfBvvzAUzWIgIy1x/evX0938E4fh1T428rjsvxgJ3bkvK+X/UMk5TXIhr9LGORv4V0z9Qx8BT FUXDPQ7dSiALu1V1YWWsrfg7fHOBMpG9VrVw5Ywz/iTWQemWr7zYM9VS6azqzgzvW2nOwSPbsZDIg pSbm/p/r0JG1K7cMY7oQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC5kG-0054pu-8P; Mon, 24 Jan 2022 20:15:20 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC5hl-0053dr-F6 for linux-arm-kernel@lists.infradead.org; Mon, 24 Jan 2022 20:12:48 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 595D4613E2; Mon, 24 Jan 2022 20:12:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D139DC340EB; Mon, 24 Jan 2022 20:12:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643055160; bh=byMO3nYSC2TvSH32oHHrAxbZ7HoV85bYK3g6rU+Vckk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ebm4MB3E88Yqn7BvQzfMhMEsishhVM9UX7r3FPZu846+SL16XmVkZHDFFbeOw/RS9 TWWh5aN2GJa/EBJPnVKVQyVHCEiEN+t9tqlBHiUXiznH51+NefoYO/vDxfMVtDU+Hy /aYkJL44EeYBfkj1HjzdzSrRLARG5NjUu/O/NJ3/3uiyNTzZgsl1PlhTh4/4pxuTe/ K76MRh7c5RfUO/EgezAlJNQoo89bSIFXn80CR50EIkCRvbTR45TFXXKCuedF3mUVuG dgGYhI5GT/gtzT9eqsWjkPHE+c/uEmFWYa6I5pfHj+4ShNIcjkpkXTNiBMC3CcgOC1 K2lDT3qIKpfoA== Received: from sofa.misterjones.org ([185.219.108.64] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nC5hf-002Y3f-07; Mon, 24 Jan 2022 20:12:39 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Mark Rutland , Will Deacon , Hector Martin , Sven Peter , Alyssa Rosenzweig , Rob Herring , Thomas Gleixner , Dougall , kernel-team@android.com Subject: [PATCH v4 09/10] drivers/perf: arm_pmu: Handle 47 bit counters Date: Mon, 24 Jan 2022 20:12:30 +0000 Message-Id: <20220124201231.298961-10-maz@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220124201231.298961-1-maz@kernel.org> References: <20220124201231.298961-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, will@kernel.org, marcan@marcan.st, sven@svenpeter.dev, alyssa@rosenzweig.io, robh+dt@kernel.org, tglx@linutronix.de, dougallj@gmail.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220124_121245_608985_431DA434 X-CRM114-Status: GOOD ( 13.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The current ARM PMU framework can only deal with 32 or 64bit counters. Teach it about a 47bit flavour. Yes, this is odd. Reviewed-by: Hector Martin Signed-off-by: Marc Zyngier --- drivers/perf/arm_pmu.c | 2 ++ include/linux/perf/arm_pmu.h | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 295cc7952d0e..0a9ed1a061ac 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -109,6 +109,8 @@ static inline u64 arm_pmu_event_max_period(struct perf_event *event) { if (event->hw.flags & ARMPMU_EVT_64BIT) return GENMASK_ULL(63, 0); + else if (event->hw.flags & ARMPMU_EVT_47BIT) + return GENMASK_ULL(46, 0); else return GENMASK_ULL(31, 0); } diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 2512e2f9cd4e..0407a38b470a 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -26,6 +26,8 @@ */ /* Event uses a 64bit counter */ #define ARMPMU_EVT_64BIT 1 +/* Event uses a 47bit counter */ +#define ARMPMU_EVT_47BIT 2 #define HW_OP_UNSUPPORTED 0xFFFF #define C(_x) PERF_COUNT_HW_CACHE_##_x -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel