tree 54932dfb00ee6731a1d3421eba1a87ed025f72dd
parent 066b3aa8454bee3cdc665d86b5de812d8d0513b3
author Robert Richter <robert.richter@amd.com> 1255051064 +0200
committer Robert Richter <robert.richter@amd.com> 1255116725 +0200

oprofile: warn on freeing event buffer too early

A race shouldn't happen since all workqueues or handlers are canceled
or flushed before the event buffer is freed. A warning is triggered
now if the buffer is freed too early.

Also, this patch adds some comments about event buffer protection,
reworks some code and adds code to clear buffer_pos during alloc and
free of the event buffer.

Cc: David Rientjes <rientjes@google.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>