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| author | Teng Qin <qinteng@fb.com> | 2018-04-29 08:39:29 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-04-29 18:18:04 +0200 |
| commit | 7ef3771205302a71a8bb4a2286ef98e5cade5d1a (patch) | |
| tree | e897e3fe2ecaf348d4780de5dd0227f802dcd48f /samples | |
| parent | Merge branch 'fix-bpf-helpers-doc' (diff) | |
| download | linux-7ef3771205302a71a8bb4a2286ef98e5cade5d1a.tar.xz linux-7ef3771205302a71a8bb4a2286ef98e5cade5d1a.zip | |
bpf: Allow bpf_current_task_under_cgroup in interrupt
Currently, the bpf_current_task_under_cgroup helper has a check where if
the BPF program is running in_interrupt(), it will return -EINVAL. This
prevents the helper to be used in many useful scenarios, particularly
BPF programs attached to Perf Events.
This commit removes the check. Tested a few NMI (Perf Event) and some
softirq context, the helper returns the correct result.
Signed-off-by: Teng Qin <qinteng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples')
0 files changed, 0 insertions, 0 deletions