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[POWERPC] PS3: os-area workqueue processing

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Add a workqueue to the PS3 os-area support.  This is needed to
support writing updates to flash memory and to update the /proc
device tree entries from the timer tick interrupt context.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Geoff Levand 2007-10-07 07:35:45 +10:00 committed by Paul Mackerras
parent 01263e88c3
commit 418ef2094e
1 changed files with 23 additions and 0 deletions
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23
arch/powerpc/platforms/ps3/os-area.c
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@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/workqueue.h>
#include <asm/lmb.h>
@ -186,6 +187,28 @@ static int __init verify_header(const struct os_area_header *header)
return 0;
}
/**
* os_area_queue_work_handler - Asynchronous write handler.
*
* An asynchronous write for flash memory and the device tree. Do not
* call directly, use os_area_queue_work().
*/
static void os_area_queue_work_handler(struct work_struct *work)
{
pr_debug(" -> %s:%d\n", __func__, __LINE__);
pr_debug(" <- %s:%d\n", __func__, __LINE__);
}
static void os_area_queue_work(void)
{
static DECLARE_WORK(q, os_area_queue_work_handler);
wmb();
schedule_work(&q);
}
/**
* ps3_os_area_save_params - Copy data from os area mirror to @saved_params.
*