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author | Michał Kępień <kernel@kempniu.pl> | 2022-06-29 15:57:36 +0300 |
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committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-09-21 11:38:09 +0300 |
commit | 7bea6056927727f98f4efdd338f112f7517f05b5 (patch) | |
tree | 748a4b19804e10df78486b563488c07ce2c84f54 /include/uapi | |
parent | 745df17906029cc683b8b5ac8bcb08f82860baff (diff) | |
download | linux-7bea6056927727f98f4efdd338f112f7517f05b5.tar.xz |
mtd: add ECC error accounting for each read request
Extend struct mtd_req_stats with two new fields holding the number of
corrected bitflips and uncorrectable errors detected during a read
operation. This is a prerequisite for ultimately passing those counters
to user space, where they can be useful to applications for making
better-informed choices about moving data around.
Unlike 'max_bitflips' (which is set - in a common code path - to the
return value of a function called while the MTD device's mutex is held),
these counters have to be maintained in each MTD driver which defines
the '_read_oob' callback because the statistics need to be calculated
while the MTD device's mutex is held.
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-4-kernel@kempniu.pl
Diffstat (limited to 'include/uapi')
0 files changed, 0 insertions, 0 deletions