From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752839AbcBWKup (ORCPT ); Tue, 23 Feb 2016 05:50:45 -0500 Received: from foss.arm.com ([217.140.101.70]:36055 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752456AbcBWKui (ORCPT ); Tue, 23 Feb 2016 05:50:38 -0500 From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: arm@kernel.org, arnd@arndb.de, olof@lixom.net, punit.agrawal@arm.com, mark.rutland@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, Suzuki K Poulose Subject: [PATCH 03/13] arm-cci: Group writes to counter Date: Tue, 23 Feb 2016 10:49:45 +0000 Message-Id: <1456224595-3282-4-git-send-email-suzuki.poulose@arm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1456224595-3282-1-git-send-email-suzuki.poulose@arm.com> References: <1456224595-3282-1-git-send-email-suzuki.poulose@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a helper to group the writes to PMU counter, this will be used to delay setting the event period to pmu::pmu_enable() Cc: Punit Agrawal Acked-by: Mark Rutland Signed-off-by: Suzuki K. Poulose --- drivers/bus/arm-cci.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index 5fb1c06..6a76ac7 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -771,6 +771,21 @@ static void pmu_write_counter(struct perf_event *event, u32 value) pmu_write_register(cci_pmu, value, idx, CCI_PMU_CNTR); } +static void __maybe_unused +pmu_write_counters(struct cci_pmu *cci_pmu, unsigned long *mask) +{ + int i; + struct cci_pmu_hw_events *cci_hw = &cci_pmu->hw_events; + + for_each_set_bit(i, mask, cci_pmu->num_cntrs) { + struct perf_event *event = cci_hw->events[i]; + + if (WARN_ON(!event)) + continue; + pmu_write_counter(event, local64_read(&event->hw.prev_count)); + } +} + static u64 pmu_event_update(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; -- 1.7.9.5 From mboxrd@z Thu Jan 1 00:00:00 1970 From: suzuki.poulose@arm.com (Suzuki K Poulose) Date: Tue, 23 Feb 2016 10:49:45 +0000 Subject: [PATCH 03/13] arm-cci: Group writes to counter In-Reply-To: <1456224595-3282-1-git-send-email-suzuki.poulose@arm.com> References: <1456224595-3282-1-git-send-email-suzuki.poulose@arm.com> Message-ID: <1456224595-3282-4-git-send-email-suzuki.poulose@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add a helper to group the writes to PMU counter, this will be used to delay setting the event period to pmu::pmu_enable() Cc: Punit Agrawal Acked-by: Mark Rutland Signed-off-by: Suzuki K. Poulose --- drivers/bus/arm-cci.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index 5fb1c06..6a76ac7 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -771,6 +771,21 @@ static void pmu_write_counter(struct perf_event *event, u32 value) pmu_write_register(cci_pmu, value, idx, CCI_PMU_CNTR); } +static void __maybe_unused +pmu_write_counters(struct cci_pmu *cci_pmu, unsigned long *mask) +{ + int i; + struct cci_pmu_hw_events *cci_hw = &cci_pmu->hw_events; + + for_each_set_bit(i, mask, cci_pmu->num_cntrs) { + struct perf_event *event = cci_hw->events[i]; + + if (WARN_ON(!event)) + continue; + pmu_write_counter(event, local64_read(&event->hw.prev_count)); + } +} + static u64 pmu_event_update(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; -- 1.7.9.5