Restructure code to better integrate future improvements.
This work was supported by a hardware donation from the CE Linux Forum.
Signed-off-by: Alessio Igor Bogani <abog...@kernel.org>
Signed-off-by: Anders Kaseorg <ande...@ksplice.com>
---
kernel/module.c | 75 ++++++++++++++++++++++++++++++++++++++++--------------
1 files changed, 55 insertions(+), 20 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index d5938a5..b438b25 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -235,28 +235,28 @@ extern const unsigned long __start___kcrctab_unused_gpl[];
#define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL)
#endif
-static bool each_symbol_in_section(const struct symsearch *arr,
- unsigned int arrsize,
- struct module *owner,
- bool (*fn)(const struct symsearch *syms,
- struct module *owner,
- unsigned int symnum, void *data),
- void *data)
+static bool each_symsearch_in_section(const struct symsearch *arr,
+ unsigned int arrsize,
+ struct module *owner,
+ bool (*fn)(const struct symsearch *syms,
+ struct module *owner,
+ void *data),
+ void *data)
{
- unsigned int i, j;
+ unsigned int j;
for (j = 0; j < arrsize; j++) {
- for (i = 0; i < arr[j].stop - arr[j].start; i++)
- if (fn(&arr[j], owner, i, data))
- return true;
+ if (fn(&arr[j], owner, data))
+ return true;
}
return false;
}
/* Returns true as soon as fn returns true, otherwise false. */
-bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner,
- unsigned int symnum, void *data), void *data)
+static bool each_symsearch(bool (*fn)(const struct symsearch *syms,
+ struct module *owner, void *data),
+ void *data)
{
struct module *mod;
static const struct symsearch arr[] = {
@@ -278,7 +278,7 @@ bool each_symbol(bool (*fn)(const struct symsearch *arr,
struct module *owner,
#endif
};
- if (each_symbol_in_section(arr, ARRAY_SIZE(arr), NULL, fn, data))
+ if (each_symsearch_in_section(arr, ARRAY_SIZE(arr), NULL, fn, data))
return true;
list_for_each_entry_rcu(mod, &modules, list) {
@@ -304,11 +304,39 @@ bool each_symbol(bool (*fn)(const struct symsearch *arr,
struct module *owner,
#endif
};
- if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data))
+ if (each_symsearch_in_section(arr, ARRAY_SIZE(arr), mod, fn,
+ data))
return true;
}
return false;
}
+
+struct each_symbol_arg {
+ bool (*fn)(const struct symsearch *arr, struct module *owner,
+ unsigned int symnum, void *data);
+ void *data;
+};
+
+static bool each_symbol_in_symsearch(const struct symsearch *syms,
+ struct module *owner, void *data)
+{
+ struct each_symbol_arg *esa = data;
+ unsigned int i;
+
+ for (i = 0; i < syms->stop - syms->start; i++) {
+ if (esa->fn(syms, owner, i, esa->data))
+ return true;
+ }
+ return false;
+}
+
+/* Returns true as soon as fn returns true, otherwise false. */
+bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner,
+ unsigned int symnum, void *data), void *data)
+{
+ struct each_symbol_arg esa = {fn, data};
+ return each_symsearch(each_symbol_in_symsearch, &esa);
+}
EXPORT_SYMBOL_GPL(each_symbol);
struct find_symbol_arg {
@@ -323,13 +351,20 @@ struct find_symbol_arg {
const struct kernel_symbol *sym;
};
-static bool find_symbol_in_section(const struct symsearch *syms,
- struct module *owner,
- unsigned int symnum, void *data)
+static bool find_symbol_in_symsearch(const struct symsearch *syms,
+ struct module *owner,
+ void *data)
{
struct find_symbol_arg *fsa = data;
+ unsigned int symnum;
+ int result;
- if (strcmp(syms->start[symnum].name, fsa->name) != 0)
+ for (symnum = 0; symnum < syms->stop - syms->start; symnum++) {
+ result = strcmp(fsa->name, syms->start[symnum].name);
+ if (result == 0)
+ break;
+ }
+ if (symnum >= syms->stop - syms->start)
return false;
if (!fsa->gplok) {
@@ -379,7 +414,7 @@ const struct kernel_symbol *find_symbol(const char *name,
fsa.gplok = gplok;
fsa.warn = warn;
- if (each_symbol(find_symbol_in_section, &fsa)) {
+ if (each_symsearch(find_symbol_in_symsearch, &fsa)) {
if (owner)
*owner = fsa.owner;
if (crc)
--
1.7.4.1
--
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