Antoine Tenart 2845db7bed libbpf: Skip base btf sanity checks ... [ Upstream commit c73a9683cb ] When upgrading to libbpf 1.3 we noticed a big performance hit while loading programs using CORE on non base-BTF symbols. This was tracked down to the new BTF sanity check logic. The issue is the base BTF definitions are checked first for the base BTF and then again for every module BTF. Loading 5 dummy programs (using libbpf-rs) that are using CORE on a non-base BTF symbol on my system: - Before this fix: 3s. - With this fix: 0.1s. Fix this by only checking the types starting at the BTF start id. This should ensure the base BTF is still checked as expected but only once (btf->start_id == 1 when creating the base BTF), and then only additional types are checked for each module BTF. Fixes: 3903802bb9 ("libbpf: Add basic BTF sanity validation") Signed-off-by: Antoine Tenart <atenart@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Alan Maguire <alan.maguire@oracle.com> Link: https://lore.kernel.org/bpf/20240624090908.171231-1-atenart@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-08-03 08:59:40 +02:00
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api	tools api fs: Avoid reading whole file for a 1 byte bool	2023-11-30 19:25:19 -03:00
bpf	libbpf: Skip base btf sanity checks	2024-08-03 08:59:40 +02:00
perf	perf record: Fix comment misspellings	2024-04-26 22:13:10 -03:00
subcmd	tools lib subcmd: Show parent options in help	2024-05-12 21:09:52 -03:00
symbol	tools lib symbol: Add dependency test to install_headers	2022-12-14 11:16:12 -03:00
thermal	tools/lib/thermal: Fix include path for libnl3 in pkg-config file.	2023-02-15 17:29:40 +01:00
argv_split.c
bitmap.c	Bitmap patches for v6.0-rc1	2022-08-07 17:52:35 -07:00
ctype.c
find_bit.c	tools: sync find_bit() implementation	2022-09-21 12:21:44 -07:00
hweight.c
list_sort.c	tools lib: Adopt list_sort() from the kernel sources	2021-10-20 10:30:59 -03:00
rbtree.c	tools lib rbtree: pick some improvements from the kernel rbtree code	2024-05-08 08:41:27 -07:00
slab.c	tools: Move gfp.h and slab.h from radix-tree to lib	2022-02-20 08:44:37 +02:00
str_error_r.c
string.c	tools lib: Adopt memchr_inv() from kernel	2020-11-27 08:34:52 -03:00
vsprintf.c
zalloc.c	tools lib: Adopt zalloc()/zfree() from tools/perf	2019-07-09 10:13:26 -03:00