From patchwork Mon Mar 2 17:17:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javi Merino X-Patchwork-Id: 5916041 X-Patchwork-Delegate: eduardo.valentin@ti.com Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7C57DBF440 for ; Mon, 2 Mar 2015 17:19:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4810F201CE for ; Mon, 2 Mar 2015 17:19:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D74C9201B9 for ; Mon, 2 Mar 2015 17:19:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754564AbbCBRST (ORCPT ); Mon, 2 Mar 2015 12:18:19 -0500 Received: from foss.arm.com ([217.140.101.70]:47983 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755557AbbCBRSQ (ORCPT ); Mon, 2 Mar 2015 12:18:16 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AF0931C; Mon, 2 Mar 2015 09:18:34 -0800 (PST) Received: from collaborate-mta1.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTP id 0D10E3F5FA; Mon, 2 Mar 2015 09:18:16 -0800 (PST) Received: from e104805.cambridge.arm.com (e104805.cambridge.arm.com [10.2.131.108]) by collaborate-mta1.arm.com (Postfix) with SMTP id E540F13F815; Mon, 2 Mar 2015 11:18:11 -0600 (CST) Received: by e104805.cambridge.arm.com (sSMTP sendmail emulation); Mon, 02 Mar 2015 17:18:11 +0000 From: Javi Merino To: edubezval@gmail.com, rui.zhang@intel.com Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, punit.agrawal@arm.com, lina.iyer@linaro.org, broonie@kernel.org, tixy@linaro.org, Javi Merino , Frederic Weisbecker , Ingo Molnar Subject: [PATCH v3 2/5] thermal: add trace events to the power allocator governor Date: Mon, 2 Mar 2015 17:17:20 +0000 Message-Id: <1425316643-31991-3-git-send-email-javi.merino@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1425316643-31991-1-git-send-email-javi.merino@arm.com> References: <1425316643-31991-1-git-send-email-javi.merino@arm.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add trace events for the power allocator governor and the power actor interface of the cpu cooling device. Cc: Zhang Rui Cc: Eduardo Valentin Cc: Frederic Weisbecker Cc: Ingo Molnar Acked-by: Steven Rostedt Signed-off-by: Javi Merino --- drivers/thermal/cpu_cooling.c | 31 ++++++++- drivers/thermal/power_allocator.c | 22 ++++++- include/trace/events/thermal.h | 58 +++++++++++++++++ include/trace/events/thermal_power_allocator.h | 87 ++++++++++++++++++++++++++ 4 files changed, 194 insertions(+), 4 deletions(-) create mode 100644 include/trace/events/thermal_power_allocator.h diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index ba23150c7bde..c4974144c787 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -31,6 +31,8 @@ #include #include +#include + /* * Cooling state <-> CPUFreq frequency * @@ -588,12 +590,20 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev, u32 *power) { unsigned long freq; - int cpu, ret; + int i = 0, cpu, ret; u32 static_power, dynamic_power, total_load = 0; struct cpufreq_cooling_device *cpufreq_device = cdev->devdata; + u32 *load_cpu = NULL; freq = cpufreq_quick_get(cpumask_any(&cpufreq_device->allowed_cpus)); + if (trace_thermal_power_cpu_get_power_enabled()) { + u32 ncpus = cpumask_weight(&cpufreq_device->allowed_cpus); + + load_cpu = devm_kcalloc(&cdev->device, ncpus, sizeof(*load_cpu), + GFP_KERNEL); + } + for_each_cpu(cpu, &cpufreq_device->allowed_cpus) { u32 load; @@ -603,14 +613,29 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev, load = 0; total_load += load; + if (trace_thermal_power_cpu_limit_enabled() && load_cpu) + load_cpu[i] = load; + + i++; } cpufreq_device->last_load = total_load; dynamic_power = get_dynamic_power(cpufreq_device, freq); ret = get_static_power(cpufreq_device, tz, freq, &static_power); - if (ret) + if (ret) { + if (load_cpu) + devm_kfree(&cdev->device, load_cpu); return ret; + } + + if (load_cpu) { + trace_thermal_power_cpu_get_power( + &cpufreq_device->allowed_cpus, + freq, load_cpu, i, dynamic_power, static_power); + + devm_kfree(&cdev->device, load_cpu); + } *power = static_power + dynamic_power; return 0; @@ -718,6 +743,8 @@ static int cpufreq_power2state(struct thermal_cooling_device *cdev, return -EINVAL; } + trace_thermal_power_cpu_limit(&cpufreq_device->allowed_cpus, + target_freq, *state, power); return 0; } diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c index 67982d79b76c..3ca7530deac6 100644 --- a/drivers/thermal/power_allocator.c +++ b/drivers/thermal/power_allocator.c @@ -19,6 +19,9 @@ #include #include +#define CREATE_TRACE_POINTS +#include + #include "thermal_core.h" #define FRAC_BITS 10 @@ -138,7 +141,14 @@ static u32 pid_controller(struct thermal_zone_device *tz, /* feed-forward the known sustainable dissipatable power */ power_range = tz->tzp->sustainable_power + frac_to_int(power_range); - return clamp(power_range, (s64)0, (s64)max_allocatable_power); + power_range = clamp(power_range, (s64)0, (s64)max_allocatable_power); + + trace_thermal_power_allocator_pid(tz, frac_to_int(err), + frac_to_int(params->err_integral), + frac_to_int(p), frac_to_int(i), + frac_to_int(d), power_range); + + return power_range; } /** @@ -219,7 +229,7 @@ static int allocate_power(struct thermal_zone_device *tz, struct power_allocator_params *params = tz->governor_data; u32 *req_power, *max_power, *granted_power, *extra_actor_power; u32 total_req_power, max_allocatable_power; - u32 power_range; + u32 total_granted_power, power_range; int i, num_actors, total_weight, ret = 0; int trip_max_desired_temperature = params->trip_max_desired_temperature; @@ -295,6 +305,7 @@ static int allocate_power(struct thermal_zone_device *tz, divvy_up_power(req_power, max_power, num_actors, total_req_power, power_range, granted_power, extra_actor_power); + total_granted_power = 0; i = 0; list_for_each_entry(instance, &tz->thermal_instances, tz_node) { if (instance->trip != trip_max_desired_temperature) @@ -305,10 +316,17 @@ static int allocate_power(struct thermal_zone_device *tz, power_actor_set_power(instance->cdev, instance, granted_power[i]); + total_granted_power += granted_power[i]; i++; } + trace_thermal_power_allocator(tz, req_power, total_req_power, + granted_power, total_granted_power, + num_actors, power_range, + max_allocatable_power, current_temp, + (s32)control_temp - (s32)current_temp); + devm_kfree(&tz->device, req_power); unlock: mutex_unlock(&tz->lock); diff --git a/include/trace/events/thermal.h b/include/trace/events/thermal.h index 0f4f95d63c03..8b1f80682b80 100644 --- a/include/trace/events/thermal.h +++ b/include/trace/events/thermal.h @@ -77,6 +77,64 @@ TRACE_EVENT(thermal_zone_trip, __entry->trip_type) ); +TRACE_EVENT(thermal_power_cpu_get_power, + TP_PROTO(const struct cpumask *cpus, unsigned long freq, u32 *load, + size_t load_len, u32 dynamic_power, u32 static_power), + + TP_ARGS(cpus, freq, load, load_len, dynamic_power, static_power), + + TP_STRUCT__entry( + __bitmask(cpumask, num_possible_cpus()) + __field(unsigned long, freq ) + __dynamic_array(u32, load, load_len) + __field(size_t, load_len ) + __field(u32, dynamic_power ) + __field(u32, static_power ) + ), + + TP_fast_assign( + __assign_bitmask(cpumask, cpumask_bits(cpus), + num_possible_cpus()); + __entry->freq = freq; + memcpy(__get_dynamic_array(load), load, + load_len * sizeof(*load)); + __entry->load_len = load_len; + __entry->dynamic_power = dynamic_power; + __entry->static_power = static_power; + ), + + TP_printk("cpus=%s freq=%lu load={%s} dynamic_power=%d static_power=%d", + __get_bitmask(cpumask), __entry->freq, + __print_array(__get_dynamic_array(load), __entry->load_len, 4), + __entry->dynamic_power, __entry->static_power) +); + +TRACE_EVENT(thermal_power_cpu_limit, + TP_PROTO(const struct cpumask *cpus, unsigned int freq, + unsigned long cdev_state, u32 power), + + TP_ARGS(cpus, freq, cdev_state, power), + + TP_STRUCT__entry( + __bitmask(cpumask, num_possible_cpus()) + __field(unsigned int, freq ) + __field(unsigned long, cdev_state) + __field(u32, power ) + ), + + TP_fast_assign( + __assign_bitmask(cpumask, cpumask_bits(cpus), + num_possible_cpus()); + __entry->freq = freq; + __entry->cdev_state = cdev_state; + __entry->power = power; + ), + + TP_printk("cpus=%s freq=%u cdev_state=%lu power=%u", + __get_bitmask(cpumask), __entry->freq, __entry->cdev_state, + __entry->power) +); + #endif /* _TRACE_THERMAL_H */ /* This part must be outside protection */ diff --git a/include/trace/events/thermal_power_allocator.h b/include/trace/events/thermal_power_allocator.h new file mode 100644 index 000000000000..12e1321c4e0c --- /dev/null +++ b/include/trace/events/thermal_power_allocator.h @@ -0,0 +1,87 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM thermal_power_allocator + +#if !defined(_TRACE_THERMAL_POWER_ALLOCATOR_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_THERMAL_POWER_ALLOCATOR_H + +#include + +TRACE_EVENT(thermal_power_allocator, + TP_PROTO(struct thermal_zone_device *tz, u32 *req_power, + u32 total_req_power, u32 *granted_power, + u32 total_granted_power, size_t num_actors, + u32 power_range, u32 max_allocatable_power, + unsigned long current_temp, s32 delta_temp), + TP_ARGS(tz, req_power, total_req_power, granted_power, + total_granted_power, num_actors, power_range, + max_allocatable_power, current_temp, delta_temp), + TP_STRUCT__entry( + __field(int, tz_id ) + __dynamic_array(u32, req_power, num_actors ) + __field(u32, total_req_power ) + __dynamic_array(u32, granted_power, num_actors) + __field(u32, total_granted_power ) + __field(size_t, num_actors ) + __field(u32, power_range ) + __field(u32, max_allocatable_power ) + __field(unsigned long, current_temp ) + __field(s32, delta_temp ) + ), + TP_fast_assign( + __entry->tz_id = tz->id; + memcpy(__get_dynamic_array(req_power), req_power, + num_actors * sizeof(*req_power)); + __entry->total_req_power = total_req_power; + memcpy(__get_dynamic_array(granted_power), granted_power, + num_actors * sizeof(*granted_power)); + __entry->total_granted_power = total_granted_power; + __entry->num_actors = num_actors; + __entry->power_range = power_range; + __entry->max_allocatable_power = max_allocatable_power; + __entry->current_temp = current_temp; + __entry->delta_temp = delta_temp; + ), + + TP_printk("thermal_zone_id=%d req_power={%s} total_req_power=%u granted_power={%s} total_granted_power=%u power_range=%u max_allocatable_power=%u current_temperature=%lu delta_temperature=%d", + __entry->tz_id, + __print_array(__get_dynamic_array(req_power), + __entry->num_actors, 4), + __entry->total_req_power, + __print_array(__get_dynamic_array(granted_power), + __entry->num_actors, 4), + __entry->total_granted_power, __entry->power_range, + __entry->max_allocatable_power, __entry->current_temp, + __entry->delta_temp) +); + +TRACE_EVENT(thermal_power_allocator_pid, + TP_PROTO(struct thermal_zone_device *tz, s32 err, s32 err_integral, + s64 p, s64 i, s64 d, s32 output), + TP_ARGS(tz, err, err_integral, p, i, d, output), + TP_STRUCT__entry( + __field(int, tz_id ) + __field(s32, err ) + __field(s32, err_integral) + __field(s64, p ) + __field(s64, i ) + __field(s64, d ) + __field(s32, output ) + ), + TP_fast_assign( + __entry->tz_id = tz->id; + __entry->err = err; + __entry->err_integral = err_integral; + __entry->p = p; + __entry->i = i; + __entry->d = d; + __entry->output = output; + ), + + TP_printk("thermal_zone_id=%d err=%d err_integral=%d p=%lld i=%lld d=%lld output=%d", + __entry->tz_id, __entry->err, __entry->err_integral, + __entry->p, __entry->i, __entry->d, __entry->output) +); +#endif /* _TRACE_THERMAL_POWER_ALLOCATOR_H */ + +/* This part must be outside protection */ +#include