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| author | Bram Bonné <brambonne@google.com> | 2020-05-06 13:49:55 +0200 |
|---|---|---|
| committer | Bram Bonné <brambonne@google.com> | 2020-05-15 16:10:06 +0200 |
| commit | ce84677733c18bc442f7f1b2f1840117c904db70 (patch) | |
| tree | 2ad0b14b84325fe943d7b3b19b9c70011e46f827 /libc/malloc_debug/malloc_debug.cpp | |
| parent | 7e486eab1fb599fda8d7b67e50ddd726db0bdad7 (diff) | |
Speed up seccomp with priority list.
Allow to provide a list of prioritized syscalls (e.g., syscalls that we
know occur often) which are checked before other syscalls in seccomp.
When constructing the bpf seccomp filter, traverse prioritized syscalls
in a linear list before checking all other syscalls in a binary tree.
Bug: 156732794
Test: make, inspect generated *_system_policy.cpp files
Test: simpleperf on futex/ioctl-heavy app seems to show 5-10% less time
spent in seccomp call
Change-Id: I509343bcd32ada90c0591785ab5cb12d2a38c31e
Diffstat (limited to 'libc/malloc_debug/malloc_debug.cpp')
0 files changed, 0 insertions, 0 deletions