linux-next: Signed-off-by missing for commit in the ftrace tree

[Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>]

Hi all,

Commits

  fff1787adaee ("trace/kprobe: remove duplicated calls of ring_buffer_event_data")
  8c2b99790196 ("tracing: docs: Update histogram doc for .percent/.graph and 'nohitcount'")
  ccf47f5cc4ce ("tracing: Add nohitcount option for suppressing display of raw hitcount")
  a2c54256dec7 ("tracing: Add .graph suffix option to histogram value")
  abaa5258ce5e ("tracing: Add .percent suffix option to histogram values")
  5f2e094ed259 ("tracing: Allow multiple hitcount values in histograms")

are missing a Signed-off-by from their committers.

-- 
Cheers,
Stephen Rothwell

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