Yonghong Song 63fe3fd393 libbpf: Do not use __builtin_offsetof for offsetof ... Commit 5fbc220862 ("tools/libpf: Add offsetof/container_of macro in bpf_helpers.h") added a macro offsetof() to get the offset of a structure member: #define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) In certain use cases, size_t type may not be available so Commit da7a35062b ("libbpf bpf_helpers: Use __builtin_offsetof for offsetof") changed to use __builtin_offsetof which removed the dependency on type size_t, which I suggested. But using __builtin_offsetof will prevent CO-RE relocation generation in case that, e.g., TYPE is annotated with "preserve_access_info" where a relocation is desirable in case the member offset is changed in a different kernel version. So this patch reverted back to the original macro but using "unsigned long" instead of "site_t". Fixes: da7a35062b ("libbpf bpf_helpers: Use __builtin_offsetof for offsetof") Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/bpf/20200811030852.3396929-1-yhs@fb.com		2020-08-11 15:11:07 +02:00
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accounting
arch
bootconfig
bpf	bpf: Add missing return to resolve_btfids	2020-08-06 16:51:11 -07:00
build	tools, build: Propagate build failures from tools/build/Makefile.build	2020-08-03 16:15:40 +02:00
cgroup	iocost_monitor: start from the oldest usage index	2020-07-30 11:45:29 -06:00
debugging
edid
firewire
firmware
gpio
hv
iio
include	tools/bpf: Support new uapi for map element bpf iterator	2020-08-06 16:39:14 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib	libbpf: Do not use __builtin_offsetof for offsetof	2020-08-11 15:11:07 +02:00
memory-model	These were the main changes in this cycle:	2020-08-03 14:39:35 -07:00
nfsd
objtool	Misc updates:	2020-08-03 14:45:33 -07:00
pci
pcmcia
perf	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-08-02 01:02:12 -07:00
power	ACPI updates for 5.9-rc1	2020-08-03 20:37:22 -07:00
scripts
spi
testing	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2020-08-07 17:33:08 -07:00
thermal/tmon
time
usb
virtio
vm
wmi
Makefile