Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d054b36ffd302ec65aabec16a0c60ddd9e6b5a62
Commit: d054b36ffd302ec65aabec16a0c60ddd9e6b5a62
Parent: 49776d30aea903fb2f9966c8e9b6f23ae5f7c937
Author: Jeremy Kerr <[EMAIL PROTECTED]>
AuthorDate: Fri Jul 20 21:39:31 2007 +0200
Committer: Arnd Bergmann <[EMAIL PROTECTED]>
CommitDate: Fri Jul 20 21:41:48 2007 +0200
[CELL] spufs: Make signal-notification files readonly for NOSCHED contexts
Reading from the signal{1,2} files requires a spu_acquire_saved, so
make these files write-only for contexts created with
SPU_CREATE_NOSCHED.
Signed-off-by: Jeremy Kerr <[EMAIL PROTECTED]>
Signed-off-by: Arnd Bergmann <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/cell/spufs/file.c | 18 ++++++++++++++++--
1 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c
b/arch/powerpc/platforms/cell/spufs/file.c
index c2814ea..fe16411 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -934,6 +934,13 @@ static const struct file_operations spufs_signal1_fops = {
.mmap = spufs_signal1_mmap,
};
+static const struct file_operations spufs_signal1_nosched_fops = {
+ .open = spufs_signal1_open,
+ .release = spufs_signal1_release,
+ .write = spufs_signal1_write,
+ .mmap = spufs_signal1_mmap,
+};
+
static int spufs_signal2_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
@@ -1062,6 +1069,13 @@ static const struct file_operations spufs_signal2_fops =
{
.mmap = spufs_signal2_mmap,
};
+static const struct file_operations spufs_signal2_nosched_fops = {
+ .open = spufs_signal2_open,
+ .release = spufs_signal2_release,
+ .write = spufs_signal2_write,
+ .mmap = spufs_signal2_mmap,
+};
+
static void spufs_signal1_type_set(void *data, u64 val)
{
struct spu_context *ctx = data;
@@ -2184,8 +2198,8 @@ struct tree_descr spufs_dir_nosched_contents[] = {
{ "mbox_stat", &spufs_mbox_stat_fops, 0444, },
{ "ibox_stat", &spufs_ibox_stat_fops, 0444, },
{ "wbox_stat", &spufs_wbox_stat_fops, 0444, },
- { "signal1", &spufs_signal1_fops, 0666, },
- { "signal2", &spufs_signal2_fops, 0666, },
+ { "signal1", &spufs_signal1_nosched_fops, 0222, },
+ { "signal2", &spufs_signal2_nosched_fops, 0222, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
{ "mss", &spufs_mss_fops, 0666, },
-
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
