smb3: add dynamic trace point for ioctls
[ Upstream commit 073dd87c ] It can be helpful in debugging to know which ioctls are called to better correlate them with smb3 fsctls (and opens). Add a dynamic trace point to trace ioctls into cifs.ko Here is sample output: TASK-PID CPU# ||||| TIMESTAMP FUNCTION | | | ||||| | | new-inotify-ioc-90418 [001] ..... 142157.397024: smb3_ioctl: xid=18 fid=0x0 ioctl cmd=0xc009cf0b new-inotify-ioc-90457 [007] ..... 142217.943569: smb3_ioctl: xid=22 fid=0x389bf5b6 ioctl cmd=0xc009cf0b Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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