tracepoint: Do not warn on ENOMEM

Tracepoint should only warn when a kernel API user does not respect the
required preconditions (e.g. same tracepoint enabled twice, or called
to remove a tracepoint that does not exist).

Silence warning in out-of-memory conditions, given that the error is
returned to the caller.

This ensures that out-of-memory error-injection testing does not trigger
warnings in tracepoint.c, which were seen by syzbot.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]

CC: Peter Zijlstra <[email protected]>
CC: Jiri Olsa <[email protected]>
CC: Arnaldo Carvalho de Melo <[email protected]>
CC: Alexander Shishkin <[email protected]>
CC: Namhyung Kim <[email protected]>
CC: [email protected]
Fixes: de7b2973903c6 ("tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints")
Reported-by: [email protected]
Reported-by: [email protected]
Signed-off-by: Mathieu Desnoyers <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>

0 files changed, 0 insertions, 0 deletions