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| author | Thomas Gleixner <[email protected]> | 2020-02-24 14:01:39 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2020-02-25 00:18:20 +0000 |
| commit | 8a37963c7ac9ecb7f86f8ebda020e3f8d6d7b8a0 (patch) | |
| tree | ee849da409619592dbcaf62bdda95f53bcfdbb99 /scripts/bpf_helpers_doc.py | |
| parent | perf/bpf: Remove preempt disable around BPF invocation (diff) | |
| download | kernel-8a37963c7ac9ecb7f86f8ebda020e3f8d6d7b8a0.tar.gz kernel-8a37963c7ac9ecb7f86f8ebda020e3f8d6d7b8a0.zip | |
bpf: Remove recursion prevention from rcu free callback
If an element is freed via RCU then recursion into BPF instrumentation
functions is not a concern. The element is already detached from the map
and the RCU callback does not hold any locks on which a kprobe, perf event
or tracepoint attached BPF program could deadlock.
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions