Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cbe709c1683dd54a2ec2981c9e8415cb3176f4e0
Commit: cbe709c1683dd54a2ec2981c9e8415cb3176f4e0
Parent: 05169237b55058a3993fb4804d00b65dfa3e4a0c
Author: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
AuthorDate: Mon Jun 4 15:15:38 2007 +1000
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Thu Jun 14 22:29:56 2007 +1000
[POWERPC] spufs: Add a "capabilities" file to spu contexts
This adds a "capabilities" file to spu contexts consisting of a
list of linefeed separated capability names. The current exposed
capabilities are "sched" (the context is scheduleable) and
"step" (the context supports single stepping).
Signed-off-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
Acked-by: Jeremy Kerr <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/cell/spufs/file.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c
b/arch/powerpc/platforms/cell/spufs/file.c
index b1e7e2f..f1cecaa 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -28,6 +28,7 @@
#include <linux/pagemap.h>
#include <linux/poll.h>
#include <linux/ptrace.h>
+#include <linux/seq_file.h>
#include <asm/io.h>
#include <asm/semaphore.h>
@@ -39,6 +40,7 @@
#define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
+
static int
spufs_mem_open(struct inode *inode, struct file *file)
{
@@ -1797,6 +1799,29 @@ static int spufs_info_open(struct inode *inode, struct
file *file)
return 0;
}
+static int spufs_caps_show(struct seq_file *s, void *private)
+{
+ struct spu_context *ctx = s->private;
+
+ if (!(ctx->flags & SPU_CREATE_NOSCHED))
+ seq_puts(s, "sched\n");
+ if (!(ctx->flags & SPU_CREATE_ISOLATE))
+ seq_puts(s, "step\n");
+ return 0;
+}
+
+static int spufs_caps_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx);
+}
+
+static const struct file_operations spufs_caps_fops = {
+ .open = spufs_caps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static ssize_t __spufs_mbox_info_read(struct spu_context *ctx,
char __user *buf, size_t len, loff_t *pos)
{
@@ -2015,6 +2040,7 @@ static const struct file_operations
spufs_proxydma_info_fops = {
};
struct tree_descr spufs_dir_contents[] = {
+ { "capabilities", &spufs_caps_fops, 0444, },
{ "mem", &spufs_mem_fops, 0666, },
{ "regs", &spufs_regs_fops, 0666, },
{ "mbox", &spufs_mbox_fops, 0444, },
@@ -2050,6 +2076,7 @@ struct tree_descr spufs_dir_contents[] = {
};
struct tree_descr spufs_dir_nosched_contents[] = {
+ { "capabilities", &spufs_caps_fops, 0444, },
{ "mem", &spufs_mem_fops, 0666, },
{ "mbox", &spufs_mbox_fops, 0444, },
{ "ibox", &spufs_ibox_fops, 0444, },
-
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