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authorLinus Torvalds <torvalds@linux-foundation.org>2010-06-01 08:55:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-01 08:55:52 -0700
commit1f73897861b8ef0be64ff4b801f8d6f830f683b5 (patch)
treeb4bae8f12e1422113910d8cb00a19d010dc4a52f /scripts/kconfig/symbol.c
parentb904d7131d116900524bd36ec170dcd97846bfd3 (diff)
parent64ffc9ff424c65adcffe7d590018cc75e2d5d42a (diff)
Merge branch 'for-35' of git://repo.or.cz/linux-kbuild
* 'for-35' of git://repo.or.cz/linux-kbuild: (81 commits) kbuild: Revert part of e8d400a to resolve a conflict kbuild: Fix checking of scm-identifier variable gconfig: add support to show hidden options that have prompts menuconfig: add support to show hidden options which have prompts gconfig: remove show_debug option gconfig: remove dbg_print_ptype() and dbg_print_stype() kconfig: fix zconfdump() kconfig: some small fixes add random binaries to .gitignore kbuild: Include gen_initramfs_list.sh and the file list in the .d file kconfig: recalc symbol value before showing search results .gitignore: ignore *.lzo files headerdep: perlcritic warning scripts/Makefile.lib: Align the output of LZO kbuild: Generate modules.builtin in make modules_install Revert "kbuild: specify absolute paths for cscope" kbuild: Do not unnecessarily regenerate modules.builtin headers_install: use local file handles headers_check: fix perl warnings export_report: fix perl warnings ...
Diffstat (limited to 'scripts/kconfig/symbol.c')
-rw-r--r--scripts/kconfig/symbol.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 6c8fbbb66ebc..2e7a048e0cfc 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -651,12 +651,20 @@ bool sym_is_changable(struct symbol *sym)
return sym->visible > sym->rev_dep.tri;
}
+static unsigned strhash(const char *s)
+{
+ /* fnv32 hash */
+ unsigned hash = 2166136261U;
+ for (; *s; s++)
+ hash = (hash ^ *s) * 0x01000193;
+ return hash;
+}
+
struct symbol *sym_lookup(const char *name, int flags)
{
struct symbol *symbol;
- const char *ptr;
char *new_name;
- int hash = 0;
+ int hash;
if (name) {
if (name[0] && !name[1]) {
@@ -666,12 +674,11 @@ struct symbol *sym_lookup(const char *name, int flags)
case 'n': return &symbol_no;
}
}
- for (ptr = name; *ptr; ptr++)
- hash += *ptr;
- hash &= 0xff;
+ hash = strhash(name) % SYMBOL_HASHSIZE;
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
- if (!strcmp(symbol->name, name) &&
+ if (symbol->name &&
+ !strcmp(symbol->name, name) &&
(flags ? symbol->flags & flags
: !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
return symbol;
@@ -679,7 +686,7 @@ struct symbol *sym_lookup(const char *name, int flags)
new_name = strdup(name);
} else {
new_name = NULL;
- hash = 256;
+ hash = 0;
}
symbol = malloc(sizeof(*symbol));
@@ -697,7 +704,6 @@ struct symbol *sym_lookup(const char *name, int flags)
struct symbol *sym_find(const char *name)
{
struct symbol *symbol = NULL;
- const char *ptr;
int hash = 0;
if (!name)
@@ -710,12 +716,11 @@ struct symbol *sym_find(const char *name)
case 'n': return &symbol_no;
}
}
- for (ptr = name; *ptr; ptr++)
- hash += *ptr;
- hash &= 0xff;
+ hash = strhash(name) % SYMBOL_HASHSIZE;
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
- if (!strcmp(symbol->name, name) &&
+ if (symbol->name &&
+ !strcmp(symbol->name, name) &&
!(symbol->flags & SYMBOL_CONST))
break;
}
@@ -750,6 +755,7 @@ struct symbol **sym_re_search(const char *pattern)
return NULL;
}
}
+ sym_calc_value(sym);
sym_arr[cnt++] = sym;
}
if (sym_arr)