[patch 3/6] PS3: os-area workqueue processing
From: <hidden>
Date: 2007-10-06 21:38:17
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 <redacted> --- arch/powerpc/platforms/ps3/os-area.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
--- a/arch/powerpc/platforms/ps3/os-area.c
+++ b/arch/powerpc/platforms/ps3/os-area.c@@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/io.h> +#include <linux/workqueue.h> #include <asm/lmb.h>
@@ -187,6 +188,28 @@ static int __init verify_header(const st } /** + * 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. * * For the convenience of the guest, the HV makes a copy of the os area in
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