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Message-ID: <bb696f09-a89c-1c16-0154-961c4dabfed9@huawei.com>
Date: Mon, 31 Jul 2023 19:24:47 +0800
From: Zhihao Cheng <chengzhihao1@...wei.com>
To: ZhaoLong Wang <wangzhaolong1@...wei.com>, <richard@....at>,
<miquel.raynal@...tlin.com>, <vigneshr@...com>
CC: <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<yi.zhang@...wei.com>
Subject: Re: [PATCH V2 2/5] ubi: Split io_failures into write_failure and
erase_failure
在 2023/7/18 16:51, ZhaoLong Wang 写道:
> The emulate_io_failures debugfs entry controls both write
> failure and erase failure. This patch split io_failures
> to write_failure and erase_failure.
>
> Signed-off-by: ZhaoLong Wang <wangzhaolong1@...wei.com>
> ---
> drivers/mtd/ubi/debug.c | 13 +++++++++----
> drivers/mtd/ubi/debug.h | 14 ++++++++------
> 2 files changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
> index 9ca584da32c6..7826bc8166e8 100644
> --- a/drivers/mtd/ubi/debug.c
> +++ b/drivers/mtd/ubi/debug.c
> @@ -14,7 +14,8 @@
>
> #ifdef CONFIG_MTD_UBI_FAULT_INJECTION
> static DECLARE_FAULT_ATTR(fault_bitflips_attr);
> -static DECLARE_FAULT_ATTR(fault_io_failures_attr);
> +static DECLARE_FAULT_ATTR(fault_write_failure_attr);
> +static DECLARE_FAULT_ATTR(fault_erase_failure_attr);
> static DECLARE_FAULT_ATTR(fault_power_cut_attr);
>
> #define FAIL_ACTION(name, fault_attr) \
> @@ -24,7 +25,8 @@ bool should_fail_##name(void) \
> }
>
> FAIL_ACTION(bitflips, fault_bitflips_attr)
> -FAIL_ACTION(io_failures, fault_io_failures_attr)
> +FAIL_ACTION(write_failure, fault_write_failure_attr)
> +FAIL_ACTION(erase_failure, fault_erase_failure_attr)
> FAIL_ACTION(power_cut, fault_power_cut_attr)
> #endif
>
> @@ -245,8 +247,11 @@ static void dfs_create_fault_entry(struct dentry *parent)
> fault_create_debugfs_attr("emulate_bitflips", dir,
> &fault_bitflips_attr);
>
> - fault_create_debugfs_attr("emulate_io_failures", dir,
> - &fault_io_failures_attr);
> + fault_create_debugfs_attr("emulate_write_failure", dir,
> + &fault_write_failure_attr);
> +
> + fault_create_debugfs_attr("emulate_erase_failure", dir,
> + &fault_erase_failure_attr);
>
> fault_create_debugfs_attr("emulate_power_cut", dir,
> &fault_power_cut_attr);
> diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
> index fc4234c9a90a..6bc698b38e35 100644
> --- a/drivers/mtd/ubi/debug.h
> +++ b/drivers/mtd/ubi/debug.h
> @@ -92,10 +92,12 @@ static inline int ubi_dbg_erase_failure(const struct ubi_device *ubi)
> /* Emulate bit-flips */
> #define MASK_BITFLIPS (1 << 3)
> /* Emulates -EIO during write/erase */
> -#define MASK_IO_FAILURE (1 << 4)
> +#define MASK_WRITE_FAILURE (1 << 4)
> +#define MASK_ERASE_FAILURE (1 << 5)
>
> extern bool should_fail_bitflips(void);
> -extern bool should_fail_io_failures(void);
> +extern bool should_fail_write_failure(void);
> +extern bool should_fail_erase_failure(void);
> extern bool should_fail_power_cut(void);
>
> static inline bool ubi_dbg_fail_bitflip(const struct ubi_device *ubi)
> @@ -107,15 +109,15 @@ static inline bool ubi_dbg_fail_bitflip(const struct ubi_device *ubi)
>
> static inline bool ubi_dbg_fail_write(const struct ubi_device *ubi)
> {
> - if (ubi->dbg.emulate_failures & MASK_IO_FAILURE)
> - return should_fail_io_failures();
> + if (ubi->dbg.emulate_failures & MASK_WRITE_FAILURE)
> + return should_fail_write_failure();
> return false;
> }
>
> static inline bool ubi_dbg_fail_erase(const struct ubi_device *ubi)
> {
> - if (ubi->dbg.emulate_failures & MASK_IO_FAILURE)
> - return should_fail_io_failures();
> + if (ubi->dbg.emulate_failures & MASK_ERASE_FAILURE)
> + return should_fail_erase_failure();
> return false;
> }
>
>
Reviewed-by: Zhihao Cheng <chengzhihao1@...wei.com>
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