Messages in this thread |  | | From | Steve French <> | Date | Sat, 6 Oct 2018 14:09:30 -0500 | Subject | Re: [PATCH v2] CIFS: Print message when attempting a mount |
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On Tue, Oct 2, 2018 at 4:53 PM Rodrigo Freire <rfreire@redhat.com> wrote: > > Hi hi again Steve \o > > I do see potential for a ftrace rewrite for the cifs_dbg messages.
Was looking at this on current kernels and debugging mount is probably fine for developers (or users) - plenty of debug messages get printed via the dynamic ftrace points. In practice some would prefer less noisy trace logs so the minimum set for some would be something like this (which already works with current cifs). If we want to add some default log messages on mount to dmesg instead of the trace-cmd log, maybe we should log them at a slightly less noisy level (as we see with xfs and btrfs) so they will be more log friendly
root@smf-Thinkpad~/# trace-cmd record -e smb3_enter* -e smb3_exit* Hit Ctrl^C to stop recording
root@smf-Thinkpad:~/# trace-cmd show # tracer: nop # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | mount.cifs-14199 [002] .... 97642.728411: smb3_enter: cifs_mount: xid=20 mount.cifs-14199 [002] .... 97642.728669: smb3_enter: cifs_get_smb_ses: xid=21 mount.cifs-14199 [003] .... 97642.742336: smb3_exit_done: cifs_get_smb_ses: xid=21 mount.cifs-14199 [003] .... 97642.742343: smb3_enter: cifs_setup_ipc: xid=22 mount.cifs-14199 [003] .... 97642.742530: smb3_exit_done: cifs_setup_ipc: xid=22 mount.cifs-14199 [003] .... 97642.742532: smb3_enter: cifs_get_tcon: xid=23 mount.cifs-14199 [003] .... 97642.742674: smb3_exit_done: cifs_get_tcon: xid=23 mount.cifs-14199 [003] .... 97642.743267: smb3_exit_done: cifs_mount: xid=20 mount.cifs-14199 [003] .... 97642.743311: smb3_enter: cifs_root_iget: xid=24 mount.cifs-14199 [003] .... 97642.743471: smb3_exit_done: cifs_root_iget: xid=24
-- Thanks,
Steve
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