Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus...

[sfrench/cifs-2.6.git] / arch / powerpc / platforms / cell / spufs / file.c

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 3fcd06418b01d165ba1d01f7d9930608d6d15c6d..c66c3756970d53d52ae56df931e38219a9e79ade 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -29,6 +29,7 @@
 #include <linux/poll.h>
 #include <linux/ptrace.h>
 #include <linux/seq_file.h>
+#include <linux/marker.h>
 
 #include <asm/io.h>
 #include <asm/semaphore.h>
@@ -357,6 +358,9 @@ static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
 {
        struct spu_context *ctx = vma->vm_file->private_data;
        unsigned long area, offset = address - vma->vm_start;
+       int ret = 0;
+
+       spu_context_nospu_trace(spufs_ps_nopfn__enter, ctx);
 
        offset += vma->vm_pgoff << PAGE_SHIFT;
        if (offset >= ps_size)
@@ -375,14 +379,18 @@ static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
 
        if (ctx->state == SPU_STATE_SAVED) {
                up_read(&current->mm->mmap_sem);
-               spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
+               spu_context_nospu_trace(spufs_ps_nopfn__sleep, ctx);
+               ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
+               spu_context_trace(spufs_ps_nopfn__wake, ctx, ctx->spu);
                down_read(&current->mm->mmap_sem);
        } else {
                area = ctx->spu->problem_phys + ps_offs;
                vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT);
+               spu_context_trace(spufs_ps_nopfn__insert, ctx, ctx->spu);
        }
 
-       spu_release(ctx);
+       if (!ret)
+               spu_release(ctx);
        return NOPFN_REFAULT;
 }
 
@@ -454,7 +462,7 @@ static int spufs_cntl_open(struct inode *inode, struct file *file)
        if (!i->i_openers++)
                ctx->cntl = inode->i_mapping;
        mutex_unlock(&ctx->mapping_lock);
-       return spufs_attr_open(inode, file, spufs_cntl_get,
+       return simple_attr_open(inode, file, spufs_cntl_get,
                                        spufs_cntl_set, "0x%08lx");
 }
 
@@ -464,7 +472,7 @@ spufs_cntl_release(struct inode *inode, struct file *file)
        struct spufs_inode_info *i = SPUFS_I(inode);
        struct spu_context *ctx = i->i_ctx;
 
-       spufs_attr_release(inode, file);
+       simple_attr_release(inode, file);
 
        mutex_lock(&ctx->mapping_lock);
        if (!--i->i_openers)
@@ -476,8 +484,8 @@ spufs_cntl_release(struct inode *inode, struct file *file)
 static const struct file_operations spufs_cntl_fops = {
        .open = spufs_cntl_open,
        .release = spufs_cntl_release,
-       .read = spufs_attr_read,
-       .write = spufs_attr_write,
+       .read = simple_attr_read,
+       .write = simple_attr_write,
        .mmap = spufs_cntl_mmap,
 };
 
@@ -749,23 +757,25 @@ static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
 
        count = spu_acquire(ctx);
        if (count)
-               return count;
+               goto out;
 
        /* wait only for the first element */
        count = 0;
        if (file->f_flags & O_NONBLOCK) {
-               if (!spu_ibox_read(ctx, &ibox_data))
+               if (!spu_ibox_read(ctx, &ibox_data)) {
                        count = -EAGAIN;
+                       goto out_unlock;
+               }
        } else {
                count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data));
+               if (count)
+                       goto out;
        }
-       if (count)
-               goto out;
 
        /* if we can't write at all, return -EFAULT */
        count = __put_user(ibox_data, udata);
        if (count)
-               goto out;
+               goto out_unlock;
 
        for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
                int ret;
@@ -782,9 +792,9 @@ static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
                        break;
        }
 
-out:
+out_unlock:
        spu_release(ctx);
-
+out:
        return count;
 }
 
@@ -899,7 +909,7 @@ static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
 
        count = spu_acquire(ctx);
        if (count)
-               return count;
+               goto out;
 
        /*
         * make sure we can at least write one element, by waiting
@@ -907,14 +917,16 @@ static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
         */
        count = 0;
        if (file->f_flags & O_NONBLOCK) {
-               if (!spu_wbox_write(ctx, wbox_data))
+               if (!spu_wbox_write(ctx, wbox_data)) {
                        count = -EAGAIN;
+                       goto out_unlock;
+               }
        } else {
                count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data));
+               if (count)
+                       goto out;
        }
 
-       if (count)
-               goto out;
 
        /* write as much as possible */
        for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
@@ -928,8 +940,9 @@ static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
                        break;
        }
 
-out:
+out_unlock:
        spu_release(ctx);
+out:
        return count;
 }
 
@@ -1592,12 +1605,11 @@ static ssize_t spufs_mfc_read(struct file *file, char __user *buffer,
        } else {
                ret = spufs_wait(ctx->mfc_wq,
                           spufs_read_mfc_tagstatus(ctx, &status));
+               if (ret)
+                       goto out;
        }
        spu_release(ctx);
 
-       if (ret)
-               goto out;
-
        ret = 4;
        if (copy_to_user(buffer, &status, 4))
                ret = -EFAULT;
@@ -1726,6 +1738,8 @@ static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer,
                int status;
                ret = spufs_wait(ctx->mfc_wq,
                                 spu_send_mfc_command(ctx, cmd, &status));
+               if (ret)
+                       goto out;
                if (status)
                        ret = status;
        }
@@ -1779,7 +1793,7 @@ static int spufs_mfc_flush(struct file *file, fl_owner_t id)
 
        ret = spu_acquire(ctx);
        if (ret)
-               return ret;
+               goto out;
 #if 0
 /* this currently hangs */
        ret = spufs_wait(ctx->mfc_wq,
@@ -1788,12 +1802,13 @@ static int spufs_mfc_flush(struct file *file, fl_owner_t id)
                goto out;
        ret = spufs_wait(ctx->mfc_wq,
                         ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait);
-out:
+       if (ret)
+               goto out;
 #else
        ret = 0;
 #endif
        spu_release(ctx);
-
+out:
        return ret;
 }