67174bb233
Jakub Kicinski says: ==================== bpf: get rid of global verifier state and reuse instruction printer This set started off as simple extraction of eBPF verifier's instruction printer into a separate file but evolved into removal of global state. The purpose of moving instruction printing code is to be able to reuse it from the bpftool. As far as the global verifier lock goes, this set removes the global variables relating to the log buffer, makes the one-time init done by bpf_get_skb_set_tunnel_proto() not depend on any external locking, and performs verifier log writeback as data is produced removing the need for allocating a potentially large temporary buffer. The final step of actually removing the verifier lock is left to someone more competent and self-confident :) Note that struct bpf_verifier_env is just 40B under two pages now, we should probably switch to vzalloc() when it's expanded again... v2: - add a selftest; - use env buffer and flush on every print (Alexei); - handle kernel log allocation failures (Daniel); - put the env log members into a struct (Daniel). ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.