On 28.07.23 15:31, Ahmad Fatoum wrote:
> We already have debug prints for the circular backend to help see how
> much data is read/written for each bucket. Add similar debugging info
> for the direct backend as well. Example with stride size of 2048 and
> 44 bytes for the variable set:
>
> barebox@board:/ state -l
> state: Read state from 0 length 68
> state: Read state from 2048 length 68
> state: Read state from 4096 length 68
>
> barebox@board:/ state -s
> state: Written state to offset 0 length 68 data length 60
> state: Written state to offset 2048 length 68 data length 60
> state: Written state to offset 4096 length 68 data length 60
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> common/state/backend_bucket_direct.c | 14 +++++++++++++-
> 1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/common/state/backend_bucket_direct.c b/common/state/backend_bucket_direct.c
> index f06e14277862..03c752d6fe41 100644
> --- a/common/state/backend_bucket_direct.c
> +++ b/common/state/backend_bucket_direct.c
> @@ -52,7 +52,7 @@ static int state_backend_bucket_direct_read(struct state_backend_storage_bucket
> struct state_backend_storage_bucket_direct *direct =
> get_bucket_direct(bucket);
> struct state_backend_storage_bucket_direct_meta meta;
> - uint32_t read_len;
> + uint32_t read_len, header_len = 0;
> void *buf;
> int ret;
>
> @@ -72,6 +72,8 @@ static int state_backend_bucket_direct_read(struct state_backend_storage_bucket
> return -EINVAL;
>
> }
> +
> + header_len = sizeof(meta);
> } else {
> if (meta.magic != ~0 && !!meta.magic)
> bucket->wrong_magic = 1;
> @@ -87,12 +89,16 @@ static int state_backend_bucket_direct_read(struct state_backend_storage_bucket
> -errno);
> return -errno;
> }
> +
Oops. Stray new line.
> }
>
> buf = xmalloc(read_len);
> if (!buf)
> return -ENOMEM;
>
> + dev_dbg(direct->dev, "Read state from %lld length %d\n", (long long) direct->offset,
> + header_len + read_len);
> +
> ret = read_full(direct->fd, buf, read_len);
> if (ret < 0) {
> dev_err(direct->dev, "Failed to read from file, %d\n", ret);
> @@ -112,6 +118,7 @@ static int state_backend_bucket_direct_write(struct state_backend_storage_bucket
> {
> struct state_backend_storage_bucket_direct *direct =
> get_bucket_direct(bucket);
> + size_t header_len = 0;
> int ret;
> struct state_backend_storage_bucket_direct_meta meta;
>
> @@ -129,6 +136,8 @@ static int state_backend_bucket_direct_write(struct state_backend_storage_bucket
> dev_err(direct->dev, "Failed to write metadata to file, %d\n", ret);
> return ret;
> }
> +
> + header_len = sizeof(meta);
> } else {
> if (!IS_ENABLED(CONFIG_STATE_BACKWARD_COMPATIBLE)) {
> dev_dbg(direct->dev, "Too small stride size: must skip metadata! Increase stride size\n");
> @@ -148,6 +157,9 @@ static int state_backend_bucket_direct_write(struct state_backend_storage_bucket
> return ret;
> }
>
> + dev_dbg(direct->dev, "Written state to offset %lld length %zu data length %zu\n",
> + (long long)direct->offset, len + header_len, len);
> +
> return 0;
> }
>
--
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