Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1c0c8461191d6d74926397abe2aa5f7cc9fd5a67
Commit: 1c0c8461191d6d74926397abe2aa5f7cc9fd5a67
Parent: 254f9c5cd2d3b41e64f59df816630f7ca5548a8a
Author: Geert Uytterhoeven <[EMAIL PROTECTED]>
AuthorDate: Wed May 2 14:48:31 2007 +0200
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri May 4 17:59:08 2007 -0700
ps3fb: thread updates
ps3fb: Replace the kernel_thread and the semaphore by a proper kthread,
which
is simply woken up when the screen must be updated
Signed-off-by: Geert Uytterhoeven <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/video/ps3fb.c | 41 ++++++++++++++++++++++++++++++++---------
1 files changed, 32 insertions(+), 9 deletions(-)
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 81e43cd..815b3cc 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -32,6 +32,8 @@
#include <linux/ioctl.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
#include <linux/fb.h>
@@ -129,7 +131,6 @@ struct ps3fb_priv {
u64 context_handle, memory_handle;
void *xdr_ea;
struct gpu_driver_info *dinfo;
- struct semaphore sem;
u32 res_index;
u64 vblank_count; /* frame count */
@@ -139,6 +140,8 @@ struct ps3fb_priv {
atomic_t ext_flip; /* on/off flip with vsync */
atomic_t f_count; /* fb_open count */
int is_blanked;
+ int is_kicked;
+ struct task_struct *task;
};
static struct ps3fb_priv ps3fb;
@@ -805,11 +808,14 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int
cmd,
static int ps3fbd(void *arg)
{
- daemonize("ps3fbd");
- for (;;) {
- down(&ps3fb.sem);
- if (atomic_read(&ps3fb.ext_flip) == 0)
+ while (!kthread_should_stop()) {
+ try_to_freeze();
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (ps3fb.is_kicked) {
+ ps3fb.is_kicked = 0;
ps3fb_sync(0); /* single buffer */
+ }
+ schedule();
}
return 0;
}
@@ -830,8 +836,11 @@ static irqreturn_t ps3fb_vsync_interrupt(int irq, void
*ptr)
if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
/* VSYNC */
ps3fb.vblank_count = head->vblank_count;
- if (!ps3fb.is_blanked)
- up(&ps3fb.sem);
+ if (ps3fb.task && !ps3fb.is_blanked &&
+ !atomic_read(&ps3fb.ext_flip)) {
+ ps3fb.is_kicked = 1;
+ wake_up_process(ps3fb.task);
+ }
wake_up_interruptible(&ps3fb.wait_vsync);
}
@@ -968,6 +977,7 @@ static int __init ps3fb_probe(struct platform_device *dev)
u64 xdr_lpar;
int status;
unsigned long offset;
+ struct task_struct *task;
/* get gpu context handle */
status = lv1_gpu_memory_allocate(DDR_SIZE, 0, 0, 0, 0,
@@ -1050,9 +1060,18 @@ static int __init ps3fb_probe(struct platform_device
*dev)
"fb%d: PS3 frame buffer device, using %ld KiB of video memory\n",
info->node, ps3fb_videomemory.size >> 10);
- kernel_thread(ps3fbd, info, CLONE_KERNEL);
+ task = kthread_run(ps3fbd, info, "ps3fbd");
+ if (IS_ERR(task)) {
+ retval = PTR_ERR(task);
+ goto err_unregister_framebuffer;
+ }
+
+ ps3fb.task = task;
+
return 0;
+err_unregister_framebuffer:
+ unregister_framebuffer(info);
err_fb_dealloc:
fb_dealloc_cmap(&info->cmap);
err_framebuffer_release:
@@ -1083,6 +1102,11 @@ void ps3fb_cleanup(void)
{
int status;
+ if (ps3fb.task) {
+ struct task_struct *task = ps3fb.task;
+ ps3fb.task = NULL;
+ kthread_stop(task);
+ }
if (ps3fb.irq_no) {
free_irq(ps3fb.irq_no, ps3fb.dev);
ps3_free_irq(ps3fb.irq_no);
@@ -1195,7 +1219,6 @@ static int __init ps3fb_init(void)
atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
- init_MUTEX(&ps3fb.sem);
init_waitqueue_head(&ps3fb.wait_vsync);
ps3fb.num_frames = 1;
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
