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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-10-09 12:23:18 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-10-11 14:18:06 +0000 |
| commit | cf91a7db92c6fa5294fb97da56e7e532e2ffa4d4 (patch) | |
| tree | a48a0f17142df0f161af968cd9698ee7c7451b60 /tools/testing | |
| parent | 4411c854408c05f083c828b69e72e3cc22384fbf (diff) | |
| download | linux-next-cf91a7db92c6fa5294fb97da56e7e532e2ffa4d4.tar.gz linux-next-cf91a7db92c6fa5294fb97da56e7e532e2ffa4d4.zip | |
resolve_btfids: Build separate main and inline BTF objects
Extract .BTF.inline via the following logic:
- Traverse all types reachable from LOC_PARAM, LOC_PROTO, LOCSEC
entries and mark them as having LOC color.
- Traverse all types reachable from the remaining types
and mark them as having MAIN or SHARED.
- Create a new base BTF object and copy all MAIN/SHARED types there.
- Create a new .BTF.inline object with base set to the new base BTF
object, and copy all LOC types there.
This way .BTF.inline can refer to types and strings in the new base,
and strings used only by .BTF.inline remain in it.
Additionally, all BTF_KIND_FUNC types that map to ELF symbols with the
same name are forced to be in the base BTF. Same for types referenced
from BTF id sets.
Regular types referenced only from .BTF.inline remain in the base BTF,
and sizes are 5 and 9.5Mb for vmlinux and vmlinux.inline respectively.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261009112324.1442319-2-alan.maguire@oracle.com
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 4 | ||||
| -rw-r--r-- | tools/testing/selftests/hid/Makefile | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index a22be7efd1fa..80d8bbbc3084 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -343,7 +343,9 @@ else endif $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ - $(TOOLSDIR)/bpf/resolve_btfids/main.c \ + $(TOOLSDIR)/bpf/resolve_btfids/main.c \ + $(TOOLSDIR)/bpf/resolve_btfids/btf_colors.c \ + $(TOOLSDIR)/bpf/resolve_btfids/btf_colors.h \ $(TOOLSDIR)/lib/rbtree.c \ $(TOOLSDIR)/lib/zalloc.c \ $(TOOLSDIR)/lib/string.c \ diff --git a/tools/testing/selftests/hid/Makefile b/tools/testing/selftests/hid/Makefile index 2f423de83147..d1b65fd37911 100644 --- a/tools/testing/selftests/hid/Makefile +++ b/tools/testing/selftests/hid/Makefile @@ -148,6 +148,8 @@ endif $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ $(TOOLSDIR)/bpf/resolve_btfids/main.c \ + $(TOOLSDIR)/bpf/resolve_btfids/btf_colors.c \ + $(TOOLSDIR)/bpf/resolve_btfids/btf_colors.h \ $(TOOLSDIR)/lib/rbtree.c \ $(TOOLSDIR)/lib/zalloc.c \ $(TOOLSDIR)/lib/string.c \ |