[PATCH v5 03/10] scripts/kallsyms: remove helper sym_name() and cleanup

From: Zhen Lei
Date: Fri Sep 23 2022 - 07:22:24 EST


Now, the type and name of a symbol are no longer stored together. So the
helper sym_name() is no longer needed. Correspondingly, replacing the
field name 'sym[]' with 'name[]' is more accurate.

Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
scripts/kallsyms.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 296277128d450ff..ca378a7e9425c00 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -35,7 +35,7 @@ struct sym_entry {
unsigned int start_pos;
unsigned int percpu_absolute;
unsigned char type;
- unsigned char sym[];
+ unsigned char name[];
};

struct addr_range {
@@ -76,11 +76,6 @@ static void usage(void)
exit(1);
}

-static char *sym_name(const struct sym_entry *s)
-{
- return (char *)s->sym;
-}
-
static bool is_ignored_symbol(const char *name, char type)
{
/* Symbol names that exactly match to the following are ignored.*/
@@ -238,7 +233,7 @@ static struct sym_entry *read_symbol(FILE *in)
sym->addr = addr;
sym->len = len;
sym->type = type;
- strcpy(sym_name(sym), name);
+ strcpy((char *)sym->name, name);
sym->percpu_absolute = 0;

return sym;
@@ -262,7 +257,7 @@ static int symbol_in_range(const struct sym_entry *s,

static int symbol_valid(const struct sym_entry *s)
{
- const char *name = sym_name(s);
+ const char *name = (char *)s->name;

/* if --all-symbols is not specified, then symbols outside the text
* and inittext sections are discarded */
@@ -475,7 +470,7 @@ static void write_src(void)
printf("\t.byte 0x%02x", table[i]->len + 1);
printf(", 0x%02x", table[i]->type);
for (k = 0; k < table[i]->len; k++)
- printf(", 0x%02x", table[i]->sym[k]);
+ printf(", 0x%02x", table[i]->name[k]);
printf("\n");

/* fields 'len' and 'type' occupy one byte each */
@@ -533,7 +528,7 @@ static void build_initial_token_table(void)
unsigned int i;

for (i = 0; i < table_cnt; i++)
- learn_symbol(table[i]->sym, table[i]->len);
+ learn_symbol(table[i]->name, table[i]->len);
}

static unsigned char *find_token(unsigned char *str, int len,
@@ -558,14 +553,14 @@ static void compress_symbols(const unsigned char *str, int idx)
for (i = 0; i < table_cnt; i++) {

len = table[i]->len;
- p1 = table[i]->sym;
+ p1 = table[i]->name;

/* find the token on the symbol */
p2 = find_token(p1, len, str);
if (!p2) continue;

/* decrease the counts for this symbol's tokens */
- forget_symbol(table[i]->sym, len);
+ forget_symbol(table[i]->name, len);

size = len;

@@ -587,7 +582,7 @@ static void compress_symbols(const unsigned char *str, int idx)
table[i]->len = len;

/* increase the counts for this symbol's new tokens */
- learn_symbol(table[i]->sym, len);
+ learn_symbol(table[i]->name, len);
}
}

@@ -645,7 +640,7 @@ static void insert_real_symbols_in_table(void)

for (i = 0; i < table_cnt; i++) {
for (j = 0; j < table[i]->len; j++) {
- c = table[i]->sym[j];
+ c = table[i]->name[j];
best_table[c][0] = c;
best_table_len[c] = 1;
}
@@ -667,7 +662,7 @@ static void optimize_token_table(void)
/* guess for "linker script provide" symbol */
static int may_be_linker_script_provide_symbol(const struct sym_entry *se)
{
- const char *symbol = sym_name(se);
+ const char *symbol = (char *)se->name;
int len = se->len;

if (len < 8)
@@ -724,8 +719,8 @@ static int compare_symbols(const void *a, const void *b)
return wa - wb;

/* sort by the number of prefix underscores */
- wa = strspn(sym_name(sa), "_");
- wb = strspn(sym_name(sb), "_");
+ wa = strspn((char *)sa->name, "_");
+ wb = strspn((char *)sb->name, "_");
if (wa != wb)
return wa - wb;

--
2.25.1