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authorRusty Russell <rusty@rustcorp.com.au>2011-04-19 21:49:58 +0200
committerRusty Russell <rusty@rustcorp.com.au>2011-05-19 16:55:26 +0930
commitde4d8d53465483168d6a627d409ee2d09d8e3308 (patch)
treedadc9b82860842dcb970f2898f677e0d2373a2ab /kernel/module.c
parent01526ed0830643bd53a8434c3068e4c077e1b09d (diff)
module: each_symbol_section instead of each_symbol
Instead of having a callback function for each symbol in the kernel, have a callback for each array of symbols. This eases the logic when we move to sorted symbols and binary search. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Alessio Igor Bogani <abogani@kernel.org>
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c42
1 files changed, 27 insertions, 15 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 0e6f97f43c88..e8aa462301e7 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -240,23 +240,24 @@ static bool each_symbol_in_section(const struct symsearch *arr,
struct module *owner,
bool (*fn)(const struct symsearch *syms,
struct module *owner,
- unsigned int symnum, void *data),
+ 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)
+bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
+ struct module *owner,
+ void *data),
+ void *data)
{
struct module *mod;
static const struct symsearch arr[] = {
@@ -309,7 +310,7 @@ bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner,
}
return false;
}
-EXPORT_SYMBOL_GPL(each_symbol);
+EXPORT_SYMBOL_GPL(each_symbol_section);
struct find_symbol_arg {
/* Input */
@@ -323,15 +324,12 @@ 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 check_symbol(const struct symsearch *syms,
+ struct module *owner,
+ unsigned int symnum, void *data)
{
struct find_symbol_arg *fsa = data;
- if (strcmp(syms->start[symnum].name, fsa->name) != 0)
- return false;
-
if (!fsa->gplok) {
if (syms->licence == GPL_ONLY)
return false;
@@ -365,6 +363,20 @@ static bool find_symbol_in_section(const struct symsearch *syms,
return true;
}
+static bool find_symbol_in_section(const struct symsearch *syms,
+ struct module *owner,
+ void *data)
+{
+ struct find_symbol_arg *fsa = data;
+ unsigned int i;
+
+ for (i = 0; i < syms->stop - syms->start; i++) {
+ if (strcmp(syms->start[i].name, fsa->name) == 0)
+ return check_symbol(syms, owner, i, data);
+ }
+ return false;
+}
+
/* Find a symbol and return it, along with, (optional) crc and
* (optional) module which owns it. Needs preempt disabled or module_mutex. */
const struct kernel_symbol *find_symbol(const char *name,
@@ -379,7 +391,7 @@ 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_symbol_section(find_symbol_in_section, &fsa)) {
if (owner)
*owner = fsa.owner;
if (crc)

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