On Tue, Apr 07, 2015 at 06:46:15PM +0300, Boaz Harrosh wrote:
Hi Christoph, Ingo
It is important in the lab for postmortem analysis to know if
pmem driver loaded and/or unloaded. And the return code from this
operation.
I submit two versions [A] more chatty and version [B]. Both give me
the info I need.
I like [B] because [A] prints more lines, and also the driver might not
load at the end and we would still not see it from [A]'s prints.
But it does not matter that much just take any one you guys like
better.
Here are the commit logs:
---
[PATCH 1A] pmem: Add prints at pmem_probe/remove
Add small prints at creation/remove of pmem devices.
So we can see in dmesg logs when users loaded/unloaded
the pmem driver and what devices were created.
The prints will look like this:
Printed by e820 on load:
[ +0.000000] user: [mem 0x0000000100000000-0x000000015fffffff] persistent (type 12)
[ +0.000000] user: [mem 0x0000000160000000-0x00000001dfffffff] persistent (type 12)
...
Printed by modprobe pmem:
[ +0.003065] pmem pmem.0.auto: probe [0x0000000100000000:0x60000000]
[ +0.001816] pmem pmem.1.auto: probe [0x0000000160000000:0x80000000]
...
Printed by modprobe -r pmem:
[ +16.299145] pmem pmem.1.auto: remove
[ +0.011155] pmem pmem.0.auto: remove
Signed-off-by: Boaz Harrosh <boaz(a)plexistor.com>
Don't polute the kernel logs with "chatty" things like this, just
trigger off of the block device uevent if you really want to know if the
block device is still around or not.
thanks,
greg k-h