[PATCH 336/437] arch/parisc: convert to read/write iterators

Jens Axboe
2024-04-11T15:40:58Z

arch/parisc/kernel/perf.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index b0f0816879df..a564c56ebb6f 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -181,7 +181,7 @@ static const uint64_t *bitmask_array; /* array of bitmasks to use */
static int perf_config(uint32_t *image_ptr);
static int perf_release(struct inode *inode, struct file *file);
static int perf_open(struct inode *inode, struct file *file);
-static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos);
+static ssize_t perf_read(struct kiocb *iocb, struct iov_iter *to);
static ssize_t perf_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos);
static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
@@ -273,7 +273,7 @@ static int perf_release(struct inode *inode, struct file *file)
/*
* Read does nothing for this driver
*/
-static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos)
+static ssize_t perf_read(struct kiocb *iocb, struct iov_iter *to)
{
return 0;
}
@@ -285,9 +285,9 @@ static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t
* called on the processor that the download should happen
* on.
*/
-static ssize_t perf_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
+static ssize_t perf_write(struct kiocb *iocb, struct iov_iter *from)
{
+ size_t count = iov_iter_count(from);
size_t image_size __maybe_unused;
uint32_t image_type;
uint32_t interface_type;
@@ -306,7 +306,7 @@ static ssize_t perf_write(struct file *file, const char __user *buf,
if (count != sizeof(uint32_t))
return -EIO;

- if (copy_from_user(&image_type, buf, sizeof(uint32_t)))
+ if (!copy_from_iter_full(&image_type, sizeof(uint32_t), from))
return -EFAULT;

/* Get the interface type and test type */
@@ -467,8 +467,8 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)

static const struct file_operations perf_fops = {
.llseek = no_llseek,
- .read = perf_read,
- .write = perf_write,
+ .read_iter = perf_read,
+ .write_iter = perf_write,
.unlocked_ioctl = perf_ioctl,
.compat_ioctl = perf_ioctl,
.open = perf_open,
--
2.43.0