On Mon, 8 Jan 2018 11:11:17 +0530
venkat.prashanth2498@xxxxxxxxx wrote:
> From: Venkat Prashanth B U <venkat.prashanth2498@xxxxxxxxx>
>
> Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
> for debugfs files.
>
> Semantic patch information:
> Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
> imposes some significant overhead as compared to
> DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().
>
> Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
>
> Signed-off-by: Venkat Prashanth B U <venkat.prashanth2498@xxxxxxxxx>
Patch should have been [PATCH v2] If you don't do that it is far
too easy for me to accidentally pick up out of date versions.
Anyhow, applied to the togreg branch of iio.git and pushed out as
testing for the autobuilders to play with it.
Thanks,
Jonathan
> ---
> Change Log v1:-
> - Fixed indentation issue.
> - changed the subject line appropriately.
> ---
> drivers/iio/imu/adis16400_core.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
> index 46a5690..b199c73 100644
> --- a/drivers/iio/imu/adis16400_core.c
> +++ b/drivers/iio/imu/adis16400_core.c
> @@ -85,7 +85,7 @@ static int adis16400_show_product_id(void *arg, u64 *val)
>
> return 0;
> }
> -DEFINE_SIMPLE_ATTRIBUTE(adis16400_product_id_fops,
> +DEFINE_DEBUGFS_ATTRIBUTE(adis16400_product_id_fops,
> adis16400_show_product_id, NULL, "%lld\n");
>
> static int adis16400_show_flash_count(void *arg, u64 *val)
> @@ -102,7 +102,7 @@ static int adis16400_show_flash_count(void *arg, u64 *val)
>
> return 0;
> }
> -DEFINE_SIMPLE_ATTRIBUTE(adis16400_flash_count_fops,
> +DEFINE_DEBUGFS_ATTRIBUTE(adis16400_flash_count_fops,
> adis16400_show_flash_count, NULL, "%lld\n");
>
> static int adis16400_debugfs_init(struct iio_dev *indio_dev)
> @@ -110,15 +110,16 @@ static int adis16400_debugfs_init(struct iio_dev *indio_dev)
> struct adis16400_state *st = iio_priv(indio_dev);
>
> if (st->variant->flags & ADIS16400_HAS_SERIAL_NUMBER)
> - debugfs_create_file("serial_number", 0400,
> + debugfs_create_file_unsafe("serial_number", 0400,
> indio_dev->debugfs_dentry, st,
> &adis16400_serial_number_fops);
> if (st->variant->flags & ADIS16400_HAS_PROD_ID)
> - debugfs_create_file("product_id", 0400,
> + debugfs_create_file_unsafe("product_id", 0400,
> indio_dev->debugfs_dentry, st,
> &adis16400_product_id_fops);
> - debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
> - st, &adis16400_flash_count_fops);
> + debugfs_create_file_unsafe("flash_count", 0400,
> + indio_dev->debugfs_dentry, st,
> + &adis16400_flash_count_fops);
>
> return 0;
> }
> --
> 1.9.1
> :wq
>
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