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2022-11-18mtd-utils: flash_speed: Measure read while write latencyMiquel Raynal
The Read While Write (RWW) feature allows to perform reads from the flash array into cache while a program (from cache) or an erase operation happens, provided that the two areas are located on different banks. The main benefit is the possible reduced latency when requesting to read a page while a much longer operation is ongoing, like a write or an erase. We can try to compare the positive impact of such a feature by enhancing the flash_speed test tool with the following test: - Measure the time taken by an eraseblock write in parallel with an eraseblock read. - Measure when the read operation ends. - Compare the two to get the latency saved with the RWW feature. To be sure the mtd_write actually starts (and acquires the necessary locks) before the mtd_read does, we use SCHED_FIFO at rather high (arbitrary) priorities, respectively 42 and 41. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-11-18mtd-utils: flash_speed: Rework the time counting helpersMiquel Raynal
In order to be able to have interleaved measures, let's not use the start and finish global variables from the time helpers directly, provide parameters for these variables so that we can provide either the global entries, or more specific ones when relevant. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-12-06mtd-tests: use pages during readtest and stressRalph Siemsen
Same fix as a2c6bbc ("mtd-tests: Read and write pages during speed tests") but applied to flash_readtest and flash_stress. Resolves failure of flash_readtest when subpages are present. The test reads a (sub)page followed by the entire OOB. Upon reaching the 2nd subpage, the OOB read fails because it is beyond the end of OOB. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-10-13mtd-tests: Read and write pages during speed testsMiquel Raynal
The speed test does reads and writes of different sizes: - eraseblock - page - two pages At least this is the theory because, as opposed to the legacy kernel module doing the same measurement, the userspace tool uses the subpage size (hence accessing the same page 4, 8 or 16 times depending on the subpage setting). Of course if the controller does not support subpages, this issue is not visible. Use mtd.min_io_size instead for non-NOR devices in order to get the right bandwidth (at least one that fits the logs). Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-01-20Fix test binary installationDavid Oberhollenzer
- Remove "install tests" configure option, we already have an option whether to build tests or not. Don't try to work around autotools semantics that people building the package expect. - Fix the installation path by propperly defining it and using the correct name for the libexec path. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-04-29mtd-tests: nandbiterrs: Fix issue that just insert error at bit 7Xiaolei Li
The function insert_biterror should be designed to insert error at the first '1' bit starting at offset byte. But now, only bit 7 of each byte is checked, because checking mask is always 0x80. So, do right shift for checking mask after each checking to check the whole 8 bits of each bytes. Signed-off-by: Xiaolei Li <xiaolei.li@mediatek.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2018-10-02mtd-utils: Instead of doing preprocessor magic, just output off_t as long longThorsten Glaser
Fix warnings abot PRIdoff_t in libmtd.c, in mtd_read (and mtd_write): In file included from ../git/lib/libmtd.c:40:0: ../git/lib/libmtd.c: In function 'mtd_read': ../git/include/common.h:110:18: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'off_t {aka long long int}' [-Wformat=] ../git/include/common.h:120:2: note: in expansion of macro 'errmsg' errmsg(fmt, ##__VA_ARGS__); \ ^~~~~~ ../git/lib/libmtd.c:1082:10: note: in expansion of macro 'sys_errmsg' return sys_errmsg("cannot seek mtd%d to offset %"PRIdoff_t, ^~~~~~~~~~ /usr/lib/klibc/include/inttypes.h:28:17: note: format string is defined here #define PRId32 "d" Signed-off-by: Thorsten Glaser <tg@mirbsd.org> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2018-03-05mtd: tests: check erase block count in page testStefan Agner
When there is only a single erase block, the cross erase test does not report sensible errors. Warn in case there is only a single erase block instead of executing the test. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-22mtd: tests: Fix check on ebcnt in nandpagetestPaul HENRYS
If the number of erase blocks to use is not specified, ebcnt originally set to -1 leads the program to exit with: "Cannot run with less than two blocks." If the number of erase blocks to use is not specified and thus ebcnt is equal to -1, the expected behaviour is to perform the test on all the erase blocks of the mtd partition. This fixes the change introduced in 4458ad6481f60d9884925d5bc62a7954880d181b. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-03nandbiterrs: Fix copy & paste failDavid Oberhollenzer
When porting some of the mtd-tests to user space, some code was simplified. Among others, a while loop that iterates of page contents was replaced with a for loop, but the old increment was left in place, so every second byte was skipped. This patch removes the erroneous second increment. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-11-02Add no-return attribute to usage() style functionsDavid Oberhollenzer
A common pattern in command line processing is having a usage() function that prints out how to use the command line options and then terminates. The function is typically used inside a switch block for command line options like `-h' or unknown options. In a lot of places, the break keyword is omitted, because the function exits anyway. However, this triggers gcc warnings about implicit fall-through. Rather than adding a phony "/* fall-through */" this patch flags the usage() style function with a gcc attribute, indicating that they do not return and removes further superfluous break statements. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-08-24mtd-utils: tests: Avoid using less than two blocks in nandpagetestMiquel Raynal
Forbid the use of less than 2 eraseblocks in nandpagetest. It is obvious that the test cannot run on zero block, but it cannot run on only one block neither. The reason is: get_first_and_last_block() will return the same id for both the first and the last blocks. In erasecrosstest(), the logic is: - erase/write/read/verify first block - erase/write again first block - erase *last* block - read/verify first block When using only one block, 'first' refers to the same block as 'last', leading to erasing the block before reading it. Hence, the test would fail with no actual reason. Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-07-03mtd-utils: tests: Add Erased Pages Bit Flip TestHarpreet Eli Sangha
Bit flip detection for written and erased pages tend to have different implementations. Where written pages are detected and corrected using ECC, erased pages are typically detected by ensuring that the number of zeros is less than a specified threshold. As such, it's necessary to have the 'nandbiterrs' test support the testing of written and erased pages. Bit flips in erased pages are emulated by rewriting the page in raw mode, to prevent the use of ECC. Signed-off-by: Harpreet Eli Sangha <harpreet@nestlabs.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-06-28mtd-utils: tests: Fix nandbiterrs Failure CheckHarpreet Eli Sangha
After a page read, the old failure statistics are compared against the new failure statistics before the new values are actually read. Signed-off-by: Harpreet "Eli" Sangha <harpreet@nestlabs.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2017-02-20mtd-utils: Fix format specifier definitions for off_t and loff_t.Torsten Fleischer
On 32bit systems (e.g. ARM) the size of off_t can be 4 byte and the size of loff_t 8 byte. This causes compiler warnings like the following: flash_erase.c: In function 'show_progress': flash_erase.c:56:22: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'off_t {aka long int}' [-Wformat=] bareverbose(!quiet, "\rErasing %d Kibyte @ %"PRIxoff_t" -- %2i %% complete ", and an output like this: ~# flash_erase /dev/mtd2 0 1 Erasing 64 Kibyte @ 6400000000 -- 0 % complete ~# Since the size of off_t and loff_t can differ from each other, the printf format specifier should be determined separately for both. Further the format specifiers should be based directly on the size of the particular data type. Signed-off-by: Torsten Fleischer <torfl6749@gmail.com> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2016-11-17mtd-utils: Add nand sub-page test utilityDavid Oberhollenzer
Basically a user space port of the mtd sub page test kernel module. In addition to the module parameters, the utility supports using only a sub-range of the flash erase blocks with a configurable stride and can restore the block contents after the test. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add nand page test utilityDavid Oberhollenzer
Basically a user space port of the mtd page test kernel module. In addition to the module parameters, the utility supports using only a sub-range of the flash erase blocks with a configurable stride. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add flash read test utilityDavid Oberhollenzer
Basically a user space port of the mtd read test kernel module. In addition to the module parameters, the utility can scan only a sub-range of the flash erase block with a configurable stride. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add nand flash bit errors testDavid Oberhollenzer
Basically a user space port of the mtd speed test kernel module. In addition to the module parameters, the utility can resture the block contents after test and allows setting the maxium writes for the test. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add flash speed test utilityDavid Oberhollenzer
Basically a user space port of the mtd speed test kernel module. In addition to the block offset and count module parameters, the utility supports a block stride and can restore the block contents after test. Furthermore, a flag can be used to disable destructive tests (i.e. only perform read speed tests). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add flash stress test utilityDavid Oberhollenzer
Basically a user space port of the mtd stress test kernel module. In addition to the block offset and count module parameters, the utility supports a block stride and can restore the block contents after test. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-11-17mtd-utils: Add flash torture test utilityDavid Oberhollenzer
Basically a user space port of the mtd torture test kernel module. In addition to the block offset and count module parameters, the utility supports a block stride and can restore the block contents after test. In contrast to the kernel module, the torture test is implemented by the libmtd mtd_toruture function and thus doesn't allow for similarly fine grained options on diagnostics. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: Richard Weinberger <richard@nod.at>