From: David Hunt <david.hunt@intel.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, jingjing.wu@intel.com,
David Hunt <david.hunt@intel.com>,
Nemanja Marjanovic <nemanja.marjanovic@intel.com>,
Rory Sexton <rory.sexton@intel.com>
Subject: [dpdk-dev] [RFC 06/10] examples/vm_power_mgr: add scale to medium freq fn
Date: Fri, 4 Aug 2017 14:54:43 +0100 [thread overview]
Message-ID: <1501854887-42427-7-git-send-email-david.hunt@intel.com> (raw)
In-Reply-To: <1501854887-42427-1-git-send-email-david.hunt@intel.com>
Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>
Signed-off-by: Rory Sexton <rory.sexton@intel.com>
Signed-off-by: David Hunt <david.hunt@intel.com>
---
examples/vm_power_manager/power_manager.c | 15 +++++++++++++++
examples/vm_power_manager/power_manager.h | 13 +++++++++++++
2 files changed, 28 insertions(+)
diff --git a/examples/vm_power_manager/power_manager.c b/examples/vm_power_manager/power_manager.c
index 2644fce..7b0afda 100644
--- a/examples/vm_power_manager/power_manager.c
+++ b/examples/vm_power_manager/power_manager.c
@@ -250,3 +250,18 @@ power_manager_scale_core_max(unsigned core_num)
POWER_SCALE_CORE(max, core_num, ret);
return ret;
}
+
+int
+power_manager_scale_core_med(unsigned int core_num)
+{
+ int ret = 0;
+
+ if (core_num >= POWER_MGR_MAX_CPUS)
+ return -1;
+ if (!(global_enabled_cpus & (1ULL << core_num)))
+ return -1;
+ rte_spinlock_lock(&global_core_freq_info[core_num].power_sl);
+ ret = rte_power_set_freq(core_num, 5);
+ rte_spinlock_unlock(&global_core_freq_info[core_num].power_sl);
+ return ret;
+}
diff --git a/examples/vm_power_manager/power_manager.h b/examples/vm_power_manager/power_manager.h
index 1b45bab..6cdec7a 100644
--- a/examples/vm_power_manager/power_manager.h
+++ b/examples/vm_power_manager/power_manager.h
@@ -179,6 +179,19 @@ int power_manager_scale_core_max(unsigned core_num);
*/
uint32_t power_manager_get_current_frequency(unsigned core_num);
+/**
+ * Scale to medium frequency for the core specified by core_num.
+ * It is thread-safe.
+ *
+ * @param core_num
+ * The core number to change frequency
+ *
+ * @return
+ * - 1 on success.
+ * - 0 if frequency not changed.
+ * - Negative on error.
+ */
+int power_manager_scale_core_med(unsigned int core_num);
#ifdef __cplusplus
}
--
2.7.4
next prev parent reply other threads:[~2017-08-04 13:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-04 13:54 [dpdk-dev] [RFC] Policy Based Power Control for Guest David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 01/10] net/i40e: add API to convert VF Id to PF Id David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 02/10] net/i40e: add API to get received packet count David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 03/10] lib/librte_power: add extra msg type for policies David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 04/10] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 05/10] examples/vm_power_mgr: add policy to channels David Hunt
2017-08-04 13:54 ` David Hunt [this message]
2017-08-04 13:54 ` [dpdk-dev] [RFC 07/10] examples/vm_power_mgr: add port initialisation David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 08/10] examples/guest_cli: add send policy to host David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 09/10] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-08-04 13:54 ` [dpdk-dev] [RFC 10/10] net/i40e: set register for no drop David Hunt
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