Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753596Ab3C1SYW (ORCPT ); Thu, 28 Mar 2013 14:24:22 -0400 Received: from va3ehsobe005.messaging.microsoft.com ([216.32.180.31]:1078 "EHLO va3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753166Ab3C1SYS (ORCPT ); Thu, 28 Mar 2013 14:24:18 -0400 X-Forefront-Antispam-Report: CIP:163.181.249.108;KIP:(null);UIP:(null);IPV:NLI;H:ausb3twp01.amd.com;RD:none;EFVD:NLI X-SpamScore: 0 X-BigFish: VPS0(zzzz1f42h1fc6h1ee6h1de0h1202h1e76h1d1ah1d2ahzz8275bhz2dh668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1155h) X-WSS-ID: 0MKDV4B-01-YEX-02 X-M-MSG: From: Jacob Shin To: "Rafael J. Wysocki" CC: , , , Viresh Kumar , Jacob Shin Subject: [PATCH V2 1/2] cpufreq: ondemand: allow custom powersave_bias_target function to be registered Date: Thu, 28 Mar 2013 13:24:16 -0500 Message-ID: <1364495057-14939-2-git-send-email-jacob.shin@amd.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1364495057-14939-1-git-send-email-jacob.shin@amd.com> References: <1364495057-14939-1-git-send-email-jacob.shin@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3141 Lines: 86 This allows for another [arch specific] driver to hook into existing powersave bias function of the ondemand governor. i.e. This allows AMD specific powersave bias function (in a separate AMD specific driver) to aid ondemand governor's frequency transition deicisions. Signed-off-by: Jacob Shin --- drivers/cpufreq/cpufreq_governor.h | 3 +++ drivers/cpufreq/cpufreq_ondemand.c | 22 +++++++++++++++++++--- 2 files changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index c83cabf..4b6808f 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -262,4 +262,7 @@ bool need_load_eval(struct cpu_dbs_common_info *cdbs, unsigned int sampling_rate); int cpufreq_governor_dbs(struct cpufreq_policy *policy, struct common_dbs_data *cdata, unsigned int event); +void od_register_powersave_bias_function(unsigned int (*f) + (struct cpufreq_policy *, unsigned int, unsigned int)); +void od_unregister_powersave_bias_function(void); #endif /* _CPUFREQ_GOVERNER_H */ diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 15e80ee..36f0798 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -40,6 +40,8 @@ static DEFINE_PER_CPU(struct od_cpu_dbs_info_s, od_cpu_dbs_info); +static struct od_ops od_ops; + #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND static struct cpufreq_governor cpufreq_gov_ondemand; #endif @@ -145,7 +147,8 @@ static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq) struct od_dbs_tuners *od_tuners = dbs_data->tuners; if (od_tuners->powersave_bias) - freq = powersave_bias_target(p, freq, CPUFREQ_RELATION_H); + freq = od_ops.powersave_bias_target(p, freq, + CPUFREQ_RELATION_H); else if (p->cur == p->max) return; @@ -206,8 +209,8 @@ static void od_check_cpu(int cpu, unsigned int load_freq) __cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L); } else { - int freq = powersave_bias_target(policy, freq_next, - CPUFREQ_RELATION_L); + int freq = od_ops.powersave_bias_target(policy, + freq_next, CPUFREQ_RELATION_L); __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_L); } @@ -565,6 +568,19 @@ static struct common_dbs_data od_dbs_cdata = { .exit = od_exit, }; +void od_register_powersave_bias_function(unsigned int (*f) + (struct cpufreq_policy *, unsigned int, unsigned int)) +{ + od_ops.powersave_bias_target = f; +} +EXPORT_SYMBOL_GPL(od_register_powersave_bias_function); + +void od_unregister_powersave_bias_function(void) +{ + od_ops.powersave_bias_target = powersave_bias_target; +} +EXPORT_SYMBOL_GPL(od_unregister_powersave_bias_function); + static int od_cpufreq_governor_dbs(struct cpufreq_policy *policy, unsigned int event) { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/