Randy Dunlap [mailto:[email protected]]
>
>On Thu, 23 Aug 2007 17:15:22 -0700 Shannon Nelson wrote:
>
>> Signed-off-by: Shannon Nelson <[email protected]>
>> Acked-by: David S. Miller <[email protected]>
>> ---
>>
>> drivers/Kconfig | 2 +
>> drivers/Makefile | 1
>> drivers/dca/Kconfig | 11 +++
>> drivers/dca/Makefile | 2 +
>> drivers/dca/dca-core.c | 168
>+++++++++++++++++++++++++++++++++++++++++++++++
>> drivers/dca/dca-sysfs.c | 88 +++++++++++++++++++++++++
>> include/linux/dca.h | 47 +++++++++++++
>> 7 files changed, 319 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/dca/Kconfig b/drivers/dca/Kconfig
>> new file mode 100644
>> index 0000000..d901615
>> --- /dev/null
>> +++ b/drivers/dca/Kconfig
>> @@ -0,0 +1,11 @@
>> +#
>> +# DCA server configuration
>> +#
>> +
>> +config DCA
>> + tristate "DCA support for clients and providers"
>> + ---help---
>> + This is a server to help modules that want to use
>Direct Cache
>> + Access to find DCA providers that will supply correct
>CPU tags.
>> + default m
>
>We conventionally put help text last in each config entry.
>& Help text should be indented by 1 tab + 2 spaces.
>
>> diff --git a/drivers/dca/dca-core.c b/drivers/dca/dca-core.c
>> new file mode 100644
>> index 0000000..c0ff9bd
>> --- /dev/null
>> +++ b/drivers/dca/dca-core.c
>> @@ -0,0 +1,168 @@
>> +/*
>> + * Copyright(c) 2007 Intel Corporation. All rights reserved.
>> + *
>> +/*
>> + * This driver supports an interface for DCA clients and
>providers to meet.
>> + */
>> +
>> +#include <linux/kernel.h>
>> +#include <linux/notifier.h>
>> +#include <linux/device.h>
>> +#include <linux/dca.h>
>> +
>> +MODULE_LICENSE("GPL");
>> +
>> +/* For now we're assuming a single, global, DCA provider
>for the system. */
>> +
>> +static DEFINE_SPINLOCK(dca_lock);
>> +
>> +struct dca_provider *global_dca = NULL;
>
>Can global_dca be static, or is it used in other source files?
Yes, this should be static. I'll fix this.
>
>It would be good to have all of these global/exported interfaces
>documented somewhere. Did I miss it in another file?
>If not, you could use kernel-doc to add inline function docs.
>See Documentation/kernel-doc-nano-HOWTO.txt.
I'll add the block comments.
>
>> +u8 dca_get_tag(int cpu)
>> +{
>> + if (!global_dca)
>> + return -ENODEV;
>> + return global_dca->ops->get_tag(global_dca, cpu);
>> +}
>> +EXPORT_SYMBOL(dca_get_tag);
>> +
>
>> +
>> +static BLOCKING_NOTIFIER_HEAD(dca_provider_chain);
>> +
>> +
>> +static int __init dca_init(void)
>> +{
>> + int err;
>> +
>> + err = dca_sysfs_init();
>> + if (err)
>> + return err;
>> + return 0;
>
>or just (in all cases):
>
> return err;
>
>> +}
Yep, will do.
Thanks for the comments,
sln
--
======================================================================
Mr. Shannon Nelson LAN Access Division, Intel Corp.
[email protected] I don't speak for Intel
(503) 712-7659 Parents can't afford to be squeamish.
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