On Wed, Mar 30, 2022 at 03:47:25AM +0300, mpenttil@xxxxxxxxxx wrote: > From: Mika Penttilä <mpenttil@xxxxxxxxxx> > > HMM selftests use an in-kernel pseudo device to emulate device private > memory. The pseudo device registers a major device range for two pseudo > device instances. User space has a script that reads /proc/devices in > order to find the assigned major number, and sends that to mknod(1), > once for each node. > > Change this to properly use cdev and struct device APIs. > > Delete the /proc/devices parsing from the user-space test script, now > that it is unnecessary. > > Also, deleted an unused field in struct dmirror_device: devmem. > > Signed-off-by: Mika Penttilä <mpenttil@xxxxxxxxxx> > Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx> > Cc: Alistair Popple <apopple@xxxxxxxxxx> > Cc: Ralph Campbell <rcampbell@xxxxxxxxxx> > Cc: Jason Gunthorpe <jgg@xxxxxxxx> > Cc: Vlastimil Babka <vbabka@xxxxxxx> > --- > v6: > - remove device names array > - check return value of dev_set_name() > v5: > - fix whitespace > . delete unused structure field > v4: > - fix commit log > v3: > - use cdev_device_add() instead of miscdevice > v2: > - Cleanups per review comments from John Hubbard > - Added Tested-by and Ccs > > > lib/test_hmm.c | 13 ++++++++++--- > tools/testing/selftests/vm/test_hmm.sh | 6 ------ > 2 files changed, 10 insertions(+), 9 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
