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Tue, 09 Feb 2021 19:36:36 -0800 (PST) From: Alexei Starovoitov To: davem@davemloft.net Cc: daniel@iogearbox.net, bpf@vger.kernel.org, kernel-team@fb.com Subject: [PATCH v4 bpf-next 0/9] bpf: Misc improvements Date: Tue, 9 Feb 2021 19:36:25 -0800 Message-Id: <20210210033634.62081-1-alexei.starovoitov@gmail.com> X-Mailer: git-send-email 2.13.5 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net From: Alexei Starovoitov v4: - split migrate_disable into separate patch v3: - address review comments - improve recursion selftest Several bpf improvements: - optimize prog stats - compute stats for sleepable progs - prevent recursion fentry/fexit and sleepable progs - allow map-in-map and per-cpu maps in sleepable progs Alexei Starovoitov (9): bpf: Optimize program stats bpf: Run sleepable programs with migration disabled bpf: Compute program stats for sleepable programs bpf: Add per-program recursion prevention mechanism selftest/bpf: Add a recursion test bpf: Count the number of times recursion was prevented selftests/bpf: Improve recursion selftest bpf: Allows per-cpu maps and map-in-map in sleepable programs selftests/bpf: Add a test for map-in-map and per-cpu maps in sleepable progs arch/x86/net/bpf_jit_comp.c | 46 ++++++----- include/linux/bpf.h | 16 +--- include/linux/filter.h | 16 +++- include/uapi/linux/bpf.h | 1 + kernel/bpf/core.c | 16 +++- kernel/bpf/hashtab.c | 4 +- kernel/bpf/syscall.c | 16 ++-- kernel/bpf/trampoline.c | 77 +++++++++++++++---- kernel/bpf/verifier.c | 9 ++- tools/bpf/bpftool/prog.c | 4 + tools/include/uapi/linux/bpf.h | 1 + .../selftests/bpf/prog_tests/fexit_stress.c | 4 +- .../selftests/bpf/prog_tests/recursion.c | 41 ++++++++++ .../bpf/prog_tests/trampoline_count.c | 4 +- tools/testing/selftests/bpf/progs/lsm.c | 69 +++++++++++++++++ tools/testing/selftests/bpf/progs/recursion.c | 46 +++++++++++ 16 files changed, 303 insertions(+), 67 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/recursion.c create mode 100644 tools/testing/selftests/bpf/progs/recursion.c