From 19bd8981dc2ee35fdc81ab1b0104b607c917d470 Mon Sep 17 00:00:00 2001 From: Zhen Lei Date: Wed, 2 Nov 2022 16:49:16 +0800 Subject: kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[] kallsyms_seqs_of_names[] records the symbol index sorted by address, the maximum value in kallsyms_seqs_of_names[] is the number of symbols. And 2^24 = 16777216, which means that three bytes are enough to store the index. This can help us save (1 * kallsyms_num_syms) bytes of memory. Signed-off-by: Zhen Lei Signed-off-by: Luis Chamberlain --- scripts/kallsyms.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'scripts/kallsyms.c') diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 07ecf7e5c49f..04e04fbd9625 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -600,7 +600,10 @@ static void write_src(void) sort_symbols_by_name(); output_label("kallsyms_seqs_of_names"); for (i = 0; i < table_cnt; i++) - printf("\t.long\t%u\n", table[i]->seq); + printf("\t.byte 0x%02x, 0x%02x, 0x%02x\n", + (unsigned char)(table[i]->seq >> 16), + (unsigned char)(table[i]->seq >> 8), + (unsigned char)(table[i]->seq >> 0)); printf("\n"); output_label("kallsyms_token_table"); -- cgit v1.2.3