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mmc: mmc_test: Add re-tuning test
Add a test to repeatedly re-tune in between random reads. The test is non-destructive of data on the card and runs for 30 seconds. It can be repeated to test for longer durations. If re-tuning is not supported, the test is skipped. Example: # echo 'mmc1:0001' > /sys/bus/mmc/drivers/mmcblk/unbind # echo 'mmc1:0001' > /sys/bus/mmc/drivers/mmc_test/bind [ 36.642257] mmc_test mmc1:0001: Card claimed for testing. # cat /sys/kernel/debug/mmc1/mmc1\:0001/testlist | grep tuning 52: Re-tuning reliability # echo 52 > /sys/kernel/debug/mmc1/mmc1\:0001/test [ 91.522555] mmc1: Starting tests of card mmc1:0001... [ 91.528425] mmc1: Test case 52. Re-tuning reliability... [ 121.536682] mmc1: Result: OK [ 121.539572] mmc1: Tests completed. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20231214090902.43628-1-adrian.hunter@intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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84a6be7db9
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1 changed files with 27 additions and 6 deletions
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@ -1904,7 +1904,7 @@ static unsigned int mmc_test_rnd_num(unsigned int rnd_cnt)
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}
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static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
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unsigned long sz)
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unsigned long sz, int secs, int force_retuning)
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{
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unsigned int dev_addr, cnt, rnd_addr, range1, range2, last_ea = 0, ea;
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unsigned int ssz;
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@ -1921,7 +1921,7 @@ static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
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for (cnt = 0; cnt < UINT_MAX; cnt++) {
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ktime_get_ts64(&ts2);
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ts = timespec64_sub(ts2, ts1);
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if (ts.tv_sec >= 10)
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if (ts.tv_sec >= secs)
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break;
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ea = mmc_test_rnd_num(range1);
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if (ea == last_ea)
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@ -1929,6 +1929,8 @@ static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
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last_ea = ea;
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dev_addr = rnd_addr + test->card->pref_erase * ea +
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ssz * mmc_test_rnd_num(range2);
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if (force_retuning)
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mmc_retune_needed(test->card->host);
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ret = mmc_test_area_io(test, sz, dev_addr, write, 0, 0);
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if (ret)
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return ret;
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@ -1953,24 +1955,35 @@ static int mmc_test_random_perf(struct mmc_test_card *test, int write)
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*/
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if (write) {
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next = rnd_next;
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ret = mmc_test_rnd_perf(test, write, 0, sz);
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ret = mmc_test_rnd_perf(test, write, 0, sz, 10, 0);
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if (ret)
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return ret;
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rnd_next = next;
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}
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ret = mmc_test_rnd_perf(test, write, 1, sz);
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ret = mmc_test_rnd_perf(test, write, 1, sz, 10, 0);
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if (ret)
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return ret;
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}
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sz = t->max_tfr;
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if (write) {
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next = rnd_next;
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ret = mmc_test_rnd_perf(test, write, 0, sz);
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ret = mmc_test_rnd_perf(test, write, 0, sz, 10, 0);
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if (ret)
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return ret;
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rnd_next = next;
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}
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return mmc_test_rnd_perf(test, write, 1, sz);
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return mmc_test_rnd_perf(test, write, 1, sz, 10, 0);
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}
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static int mmc_test_retuning(struct mmc_test_card *test)
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{
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if (!mmc_can_retune(test->card->host)) {
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pr_info("%s: No retuning - test skipped\n",
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mmc_hostname(test->card->host));
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return RESULT_UNSUP_HOST;
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}
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return mmc_test_rnd_perf(test, 0, 0, 8192, 30, 1);
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}
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/*
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@ -2921,6 +2934,14 @@ static const struct mmc_test_case mmc_test_cases[] = {
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.run = mmc_test_cmds_during_write_cmd23_nonblock,
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.cleanup = mmc_test_area_cleanup,
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},
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{
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.name = "Re-tuning reliability",
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.prepare = mmc_test_area_prepare,
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.run = mmc_test_retuning,
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.cleanup = mmc_test_area_cleanup,
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},
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};
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static DEFINE_MUTEX(mmc_test_lock);
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