ring-buffer: fix timestamp in partial ring_buffer_page_read

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If a partial ring_buffer_page_read happens, then some of the
incremental timestamps may be lost. This patch writes the
recent timestamp into the page that is passed back to the caller.

A partial ring_buffer_page_read is where the full page would not
be written back to the user, and instead, just part of the page
is copied to the user. A full page would be a page swap with the
ring buffer and the timestamps would be correct.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

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This commit is contained in:

Steven Rostedt 2009-03-03 23:52:42 -05:00

parent e543ad7691

commit 4f3640f8a3

1 changed files with 5 additions and 1 deletions

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kernel/trace/ring_buffer.c

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