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ring-buffer/tracing: Have iterator acknowledge dropped events
authorSteven Rostedt (VMware) <rostedt@goodmis.org>
Tue, 17 Mar 2020 21:32:32 +0000 (17:32 -0400)
committerSteven Rostedt (VMware) <rostedt@goodmis.org>
Fri, 27 Mar 2020 20:39:01 +0000 (16:39 -0400)
commitc9b7a4a72ff64e67b7e877a99fd652230dc26058
tree52c419fb90561dd42e81011c073e6851020e6afdtree
parent06e0a548bad0f43a21e036db018e4dadb501ce8bcommit | diff
ring-buffer/tracing: Have iterator acknowledge dropped events

Have the ring_buffer_iterator set a flag if events were dropped as it were
to go and peek at the next event. Have the trace file display this fact if
it happened with a "LOST EVENTS" message.

Link: http://lkml.kernel.org/r/20200317213417.045858900@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
include/linux/ring_buffer.h diff | blob | blame | history
kernel/trace/ring_buffer.c diff | blob | blame | history
kernel/trace/trace.c diff | blob | blame | history
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