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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-11-23 19:04:32 +0300 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-11-25 15:02:18 +0300 |
| commit | f34ea0291029781810ca4c213713dc6b4a686322 (patch) | |
| tree | b6b9c48fd1a5e5f7f2048b9e3b1459175174b571 /scripts | |
| parent | 5e5c4fa787453292d3deefd59129384d391b7f45 (diff) | |
| download | linux-f34ea0291029781810ca4c213713dc6b4a686322.tar.xz | |
scripts/kallsyms: set relative_base more effectively
Currently, record_relative_base() iterates over the entire table to
find the minimum address, but it is not efficient because we sort
the table anyway.
After sort_symbol(), the table is sorted by address. (kallsyms parses
the 'nm -n' output, so the data is already sorted by address, but this
commit does not rely on it.)
Move record_relative_base() after sort_symbols(), and take the first
non-absolute symbol value.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/kallsyms.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index de986eda41a6..c9efb67c6ecb 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -739,11 +739,15 @@ static void record_relative_base(void) { unsigned int i; - relative_base = -1ULL; for (i = 0; i < table_cnt; i++) - if (!symbol_absolute(&table[i]) && - table[i].addr < relative_base) + if (!symbol_absolute(&table[i])) { + /* + * The table is sorted by address. + * Take the first non-absolute symbol value. + */ relative_base = table[i].addr; + return; + } } int main(int argc, char **argv) @@ -767,9 +771,9 @@ int main(int argc, char **argv) shrink_table(); if (absolute_percpu) make_percpus_absolute(); + sort_symbols(); if (base_relative) record_relative_base(); - sort_symbols(); optimize_token_table(); write_src(); |