user_events: Optimize writing events by only copying data once

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Pass iterator through to probes to allow copying data directly to the
probe buffers instead of taking multiple copies. Enables eBPF user and
raw iterator types out to programs for no-copy scenarios.

Link: https://lkml.kernel.org/r/20220118204326.2169-6-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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Beau Belgrave 2022-01-18 12:43:19 -08:00 • committed by Steven Rostedt (Google)

parent 3207d0459e

commit 0279400ad3

1 changed files with 85 additions and 30 deletions

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kernel/trace/trace_events_user.c

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