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PM QOS update

Bläddra i källkod 
This patch changes the string based list management to a handle base
implementation to help with the hot path use of pm-qos, it also renames
much of the API to use "request" as opposed to "requirement" that was
used in the initial implementation.  I did this because request more
accurately represents what it actually does.

Also, I added a string based ABI for users wanting to use a string
interface.  So if the user writes 0xDDDDDDDD formatted hex it will be
accepted by the interface.  (someone asked me for it and I don't think
it hurts anything.)

This patch updates some documentation input I got from Randy.

Signed-off-by: markgross <mgross@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Mark Gross
2010-05-06 01:59:26 +02:00
committad av Rafael J. Wysocki
förälder 0fef8b1e83
incheckning ed77134bfc
14 ändrade filer med 175 tillägg och 170 borttagningar
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22
drivers/net/e1000e/netdev.c
Visa fil

@@ -2524,12 +2524,12 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
* excessive C-state transition latencies result in
* dropped transactions.
*/
pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
adapter->netdev->name, 55);
pm_qos_update_request(
adapter->netdev->pm_qos_req, 55);
} else {
pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
adapter->netdev->name,
PM_QOS_DEFAULT_VALUE);
pm_qos_update_request(
adapter->netdev->pm_qos_req,
PM_QOS_DEFAULT_VALUE);
}
}
@@ -2824,8 +2824,8 @@ int e1000e_up(struct e1000_adapter *adapter)
/* DMA latency requirement to workaround early-receive/jumbo issue */
if (adapter->flags & FLAG_HAS_ERT)
pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
adapter->netdev->name,
adapter->netdev->pm_qos_req =
pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
/* hardware has been reset, we need to reload some things */
@@ -2887,9 +2887,11 @@ void e1000e_down(struct e1000_adapter *adapter)
e1000_clean_tx_ring(adapter);
e1000_clean_rx_ring(adapter);
if (adapter->flags & FLAG_HAS_ERT)
pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
adapter->netdev->name);
if (adapter->flags & FLAG_HAS_ERT) {
pm_qos_remove_request(
adapter->netdev->pm_qos_req);
adapter->netdev->pm_qos_req = NULL;
}
/*
* TODO: for power management, we could drop the link and