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kernel_optimize_test/kernel/bpf
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David S. Miller 59436c9ee1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 
Daniel Borkmann says:

====================
pull-request: bpf-next 2017-12-18

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Allow arbitrary function calls from one BPF function to another BPF function.
   As of today when writing BPF programs, __always_inline had to be used in
   the BPF C programs for all functions, unnecessarily causing LLVM to inflate
   code size. Handle this more naturally with support for BPF to BPF calls
   such that this __always_inline restriction can be overcome. As a result,
   it allows for better optimized code and finally enables to introduce core
   BPF libraries in the future that can be reused out of different projects.
   x86 and arm64 JIT support was added as well, from Alexei.

2) Add infrastructure for tagging functions as error injectable and allow for
   BPF to return arbitrary error values when BPF is attached via kprobes on
   those. This way of injecting errors generically eases testing and debugging
   without having to recompile or restart the kernel. Tags for opting-in for
   this facility are added with BPF_ALLOW_ERROR_INJECTION(), from Josef.

3) For BPF offload via nfp JIT, add support for bpf_xdp_adjust_head() helper
   call for XDP programs. First part of this work adds handling of BPF
   capabilities included in the firmware, and the later patches add support
   to the nfp verifier part and JIT as well as some small optimizations,
   from Jakub.

4) The bpftool now also gets support for basic cgroup BPF operations such
   as attaching, detaching and listing current BPF programs. As a requirement
   for the attach part, bpftool can now also load object files through
   'bpftool prog load'. This reuses libbpf which we have in the kernel tree
   as well. bpftool-cgroup man page is added along with it, from Roman.

5) Back then commit e87c6bc385 ("bpf: permit multiple bpf attachments for
   a single perf event") added support for attaching multiple BPF programs
   to a single perf event. Given they are configured through perf's ioctl()
   interface, the interface has been extended with a PERF_EVENT_IOC_QUERY_BPF
   command in this work in order to return an array of one or multiple BPF
   prog ids that are currently attached, from Yonghong.

6) Various minor fixes and cleanups to the bpftool's Makefile as well
   as a new 'uninstall' and 'doc-uninstall' target for removing bpftool
   itself or prior installed documentation related to it, from Quentin.

7) Add CONFIG_CGROUP_BPF=y to the BPF kernel selftest config file which is
   required for the test_dev_cgroup test case to run, from Naresh.

8) Fix reporting of XDP prog_flags for nfp driver, from Jakub.

9) Fix libbpf's exit code from the Makefile when libelf was not found in
   the system, also from Jakub.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-18 10:51:06 -05:00
..
arraymap.c perf/bpf: Extend the perf_event_read_local() interface, a.k.a. "bpf: perf event change needed for subsequent bpf helpers" 2017-10-27 10:31:56 +02:00
bpf_lru_list.c
bpf_lru_list.h bpf: Only set node->ref = 1 if it has not been set 2017-09-01 09:57:39 -07:00
cgroup.c bpf, cgroup: implement eBPF-based device controller for cgroup v2 2017-11-05 23:26:51 +09:00
core.c bpf: x64: add JIT support for multi-function programs 2017-12-17 20:34:36 +01:00
cpumap.c bpf: cpumap micro-optimization in cpu_map_enqueue 2017-11-02 16:13:14 +09:00
devmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-22 13:39:14 +01:00
disasm.c bpf: introduce function calls (function boundaries) 2017-12-17 20:34:35 +01:00
disasm.h bpf: move instruction printing into a separate file 2017-10-10 12:30:16 -07:00
hashtab.c bpf: add schedule points to map alloc/free 2017-12-12 15:27:22 -08:00
helpers.c
inode.c bpf: Add file mode configuration into bpf maps 2017-10-20 13:32:59 +01:00
lpm_trie.c bpf: Add file mode configuration into bpf maps 2017-10-20 13:32:59 +01:00
Makefile bpf: offload: add infrastructure for loading programs for a specific netdev 2017-11-05 22:26:18 +09:00
map_in_map.c
map_in_map.h
offload.c bpf: offload: add a license header 2017-11-27 22:24:51 +01:00
percpu_freelist.c bpf: fix lockdep splat 2017-11-15 19:46:32 +09:00
percpu_freelist.h
sockmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-02 15:23:39 +09:00
stackmap.c bpf: Add file mode configuration into bpf maps 2017-10-20 13:32:59 +01:00
syscall.c bpf: x64: add JIT support for multi-function programs 2017-12-17 20:34:36 +01:00
tnum.c bpf/verifier: track signed and unsigned min/max values 2017-08-08 17:51:34 -07:00
verifier.c bpf: x64: add JIT support for multi-function programs 2017-12-17 20:34:36 +01:00