Andrii Nakryiko 66d2f118d7 libbpf: Avoid enum forward-declarations in public API in C++ mode ... [ Upstream commit b42693415b ] C++ enum forward declarations are fundamentally not compatible with pure C enum definitions, and so libbpf's use of `enum bpf_stats_type;` forward declaration in libbpf/bpf.h public API header is causing C++ compilation issues. More details can be found in [0], but it comes down to C++ supporting enum forward declaration only with explicitly specified backing type: enum bpf_stats_type: int; In C (and I believe it's a GCC extension also), such forward declaration is simply: enum bpf_stats_type; Further, in Linux UAPI this enum is defined in pure C way: enum bpf_stats_type { BPF_STATS_RUN_TIME = 0; } And even though in both cases backing type is int, which can be confirmed by looking at DWARF information, for C++ compiler actual enum definition and forward declaration are incompatible. To eliminate this problem, for C++ mode define input argument as int, which makes enum unnecessary in libbpf public header. This solves the issue and as demonstrated by next patch doesn't cause any unwanted compiler warnings, at least with default warnings setting. [0] https://stackoverflow.com/questions/42766839/c11-enum-forward-causes-underlying-type-mismatch [1] Closes: https://github.com/libbpf/libbpf/issues/249 Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20221130200013.2997831-1-andrii@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-31 13:33:03 +01:00
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accounting
arch	x86/cpu: Restore AMD's DE_CFG MSR after resume	2022-11-15 10:15:58 -08:00
bootconfig
bpf	bpftool: Fix memory leak in do_build_table_cb	2022-12-31 13:32:23 +01:00
build	perf bpf: Fix build with libbpf 0.7.0 by checking if bpf_program__set_insns() is available	2022-10-25 17:40:48 -03:00
certs
cgroup	iocost_monitor: reorder BlkgIterator	2022-09-23 16:57:10 -10:00
counter
debugging	tools: Add new "test" taint to kernel-chktaint	2022-09-07 14:51:12 -06:00
edid
firewire
firmware
gpio
hv	tools: hv: kvp: remove unnecessary (void*) conversions	2022-09-05 16:55:20 +00:00
iio	tools: iio: iio_generic_buffer: Fix read size	2022-11-01 08:48:13 +00:00
include	bpf-for-netdev	2022-11-03 19:51:02 -07:00
io_uring
kvm/kvm_stat	tools/kvm_stat: update exit reasons for vmx/svm/aarch64/userspace	2022-11-09 12:26:52 -05:00
laptop
leds
lib	libbpf: Avoid enum forward-declarations in public API in C++ mode	2022-12-31 13:33:03 +01:00
memory-model	tools/memory-model: Clarify LKMM's limitations in litmus-tests.txt	2022-08-31 05:15:31 -07:00
objtool	objtool, kcsan: Add volatile read/write instrumentation to whitelist	2022-12-31 13:31:48 +01:00
pci
pcmcia
perf	perf stat: Do not delay the workload with --delay	2022-12-31 13:32:45 +01:00
power	pm-graph v5.10	2022-10-25 17:46:15 +02:00
rcu
scripts
spi
testing	selftests: devlink: fix the fd redirect in dummy_reporter_test	2022-12-31 13:32:55 +01:00
thermal	tools/thermal: Fix possible path truncations	2022-08-03 19:28:46 +02:00
time
tracing	rtla: Consolidate and show all necessary libraries that failed for building	2022-08-10 12:03:02 -04:00
usb
verification	rv/dot2c: Make automaton definition static	2022-10-20 16:02:45 -04:00
virtio	virtio_test: fixup for vq reset	2022-09-27 18:30:49 -04:00
vm	tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"	2022-11-30 14:49:41 -08:00
wmi
Makefile