ftrace: Use direct_ops hash in unregister_ftrace_direct

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Now when we have *direct_multi interface the direct_functions
hash is no longer owned just by direct_ops. It's also used by
any other ftrace_ops passed to *direct_multi interface.

Thus to find out that we are unregistering the last function
from direct_ops, we need to check directly direct_ops's hash.

Link: https://lkml.kernel.org/r/20211206182032.87248-2-jolsa@kernel.org

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Fixes: f64dd4627e ("ftrace: Add multi direct register/unregister interface")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Jiri Olsa 2021-12-06 19:20:30 +01:00 • committed by Steven Rostedt (VMware)

parent 48b27b6b51

commit 7d5b7cad79

1 changed files with 3 additions and 1 deletions

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kernel/trace/ftrace.c

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