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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-10 21:00:45 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-10 21:00:45 +0200 |
commit | 8afc66e8d43be8edcf442165b70d50dd33091e68 (patch) | |
tree | 7e39a0a1f32b0d46acdac06c6ec515402ac9f583 /scripts/kallsyms.c | |
parent | Merge tag 'livepatching-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel... (diff) | |
parent | docs: bump minimal GNU Make version to 3.82 (diff) | |
download | linux-8afc66e8d43be8edcf442165b70d50dd33091e68.tar.xz linux-8afc66e8d43be8edcf442165b70d50dd33091e68.zip |
Merge tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Remove potentially incomplete targets when Kbuid is interrupted by
SIGINT etc in case GNU Make may miss to do that when stderr is piped
to another program.
- Rewrite the single target build so it works more correctly.
- Fix rpm-pkg builds with V=1.
- List top-level subdirectories in ./Kbuild.
- Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in
kallsyms.
- Avoid two different modules in lib/zstd/ having shared code, which
potentially causes building the common code as build-in and modular
back-and-forth.
- Unify two modpost invocations to optimize the build process.
- Remove head-y syntax in favor of linker scripts for placing
particular sections in the head of vmlinux.
- Bump the minimal GNU Make version to 3.82.
- Clean up misc Makefiles and scripts.
* tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
docs: bump minimal GNU Make version to 3.82
ia64: simplify esi object addition in Makefile
Revert "kbuild: Check if linker supports the -X option"
kbuild: rebuild .vmlinux.export.o when its prerequisite is updated
kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o
zstd: Fixing mixed module-builtin objects
kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols
kallsyms: take the input file instead of reading stdin
kallsyms: drop duplicated ignore patterns from kallsyms.c
kbuild: reuse mksysmap output for kallsyms
mksysmap: update comment about __crc_*
kbuild: remove head-y syntax
kbuild: use obj-y instead extra-y for objects placed at the head
kbuild: hide error checker logs for V=1 builds
kbuild: re-run modpost when it is updated
kbuild: unify two modpost invocations
kbuild: move vmlinux.o rule to the top Makefile
kbuild: move .vmlinux.objs rule to Makefile.modpost
kbuild: list sub-directories in ./Kbuild
Makefile.compiler: replace cc-ifversion with compiler-specific macros
...
Diffstat (limited to 'scripts/kallsyms.c')
-rw-r--r-- | scripts/kallsyms.c | 54 |
1 files changed, 33 insertions, 21 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index ff5e7810e437..03fa07ad45d9 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -18,6 +18,7 @@ * */ +#include <getopt.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -87,7 +88,7 @@ static unsigned char best_table_len[256]; static void usage(void) { fprintf(stderr, "Usage: kallsyms [--all-symbols] [--absolute-percpu] " - "[--base-relative] < in.map > out.S\n"); + "[--base-relative] in.map > out.S\n"); exit(1); } @@ -123,9 +124,6 @@ static bool is_ignored_symbol(const char *name, char type) /* Symbol names that begin with the following are ignored.*/ static const char * const ignored_prefixes[] = { - "$", /* local symbols for ARM, MIPS, etc. */ - ".L", /* local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc. */ - "__crc_", /* modversions */ "__efistub_", /* arm64 EFI stub namespace */ "__kvm_nvhe_$", /* arm64 local symbols in non-VHE KVM namespace */ "__kvm_nvhe_.L", /* arm64 local symbols in non-VHE KVM namespace */ @@ -330,12 +328,19 @@ static void shrink_table(void) } } -static void read_map(FILE *in) +static void read_map(const char *in) { + FILE *fp; struct sym_entry *sym; - while (!feof(in)) { - sym = read_symbol(in); + fp = fopen(in, "r"); + if (!fp) { + perror(in); + exit(1); + } + + while (!feof(fp)) { + sym = read_symbol(fp); if (!sym) continue; @@ -346,12 +351,15 @@ static void read_map(FILE *in) table = realloc(table, sizeof(*table) * table_size); if (!table) { fprintf(stderr, "out of memory\n"); + fclose(fp); exit (1); } } table[table_cnt++] = sym; } + + fclose(fp); } static void output_label(const char *label) @@ -805,22 +813,26 @@ static void record_relative_base(void) int main(int argc, char **argv) { - if (argc >= 2) { - int i; - for (i = 1; i < argc; i++) { - if(strcmp(argv[i], "--all-symbols") == 0) - all_symbols = 1; - else if (strcmp(argv[i], "--absolute-percpu") == 0) - absolute_percpu = 1; - else if (strcmp(argv[i], "--base-relative") == 0) - base_relative = 1; - else - usage(); - } - } else if (argc != 1) + while (1) { + static struct option long_options[] = { + {"all-symbols", no_argument, &all_symbols, 1}, + {"absolute-percpu", no_argument, &absolute_percpu, 1}, + {"base-relative", no_argument, &base_relative, 1}, + {}, + }; + + int c = getopt_long(argc, argv, "", long_options, NULL); + + if (c == -1) + break; + if (c != 0) + usage(); + } + + if (optind >= argc) usage(); - read_map(stdin); + read_map(argv[optind]); shrink_table(); if (absolute_percpu) make_percpus_absolute(); |