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Merge branch 'bpftool: improve error handing for missing .BTF section'

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Changbin Du says:

====================
Display error message for missing ".BTF" section and clean up empty
vmlinux.h file.

v3:
 - fix typo and make error message consistent. (Andrii Nakryiko)
 - split out perf change.
v2:
 - remove vmlinux specific error info.
 - use builtin target .DELETE_ON_ERROR: to delete empty vmlinux.h
====================

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
This commit is contained in:
Andrii Nakryiko 2022-12-20 16:09:40 -08:00
commit 7b43df6c6e
3 changed files with 7 additions and 0 deletions
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3
tools/bpf/bpftool/Makefile
View File

@ -289,3 +289,6 @@ FORCE:
.PHONY: all FORCE bootstrap clean install-bin install uninstall
.PHONY: doc doc-clean doc-install doc-uninstall
.DEFAULT_GOAL := all
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR:

1
tools/lib/bpf/btf.c
View File

@ -1003,6 +1003,7 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
err = 0;
if (!btf_data) {
pr_warn("failed to find '%s' ELF section in %s\n", BTF_ELF_SEC, path);
err = -ENOENT;
goto done;
}

3
tools/testing/selftests/bpf/Makefile
View File

@ -626,3 +626,6 @@ EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
liburandom_read.so)
.PHONY: docs docs-clean
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR: