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authorJason Wessel <jason.wessel@windriver.com>2013-02-04 10:35:33 -0600
committerJason Wessel <jason.wessel@windriver.com>2013-03-02 08:52:19 -0600
commit1b2caa2dcb8f18d2be9c5c3c992cb6da03f1a70a (patch)
treebb1d38bf2d0c5e0cd40366fd221fe0db647e9e4b /kernel
parent074604af21c971cf2fcfaa0f6012b4b0c9ca891a (diff)
downloadvexpress-lsk-1b2caa2dcb8f18d2be9c5c3c992cb6da03f1a70a.tar.gz
kdb: Remove the ll command
Recently some code inspection was done after fixing a problem with kmalloc used while in the kernel debugger context (which is not legal), and it turned up the fact that kdb ll command will oops the kernel. Given that there have been zero bug reports on the command combined with the fact it will oops the kernel it is clearly not being used. Instead of fixing it, it will be removed. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/debug/kdb/kdb_main.c65
1 files changed, 0 insertions, 65 deletions
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 25908cf2f5d..cdfc0a7e583 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -2362,69 +2362,6 @@ static int kdb_pid(int argc, const char **argv)
return 0;
}
-/*
- * kdb_ll - This function implements the 'll' command which follows a
- * linked list and executes an arbitrary command for each
- * element.
- */
-static int kdb_ll(int argc, const char **argv)
-{
- int diag = 0;
- unsigned long addr;
- long offset = 0;
- unsigned long va;
- unsigned long linkoffset;
- int nextarg;
- const char *command;
-
- if (argc != 3)
- return KDB_ARGCOUNT;
-
- nextarg = 1;
- diag = kdbgetaddrarg(argc, argv, &nextarg, &addr, &offset, NULL);
- if (diag)
- return diag;
-
- diag = kdbgetularg(argv[2], &linkoffset);
- if (diag)
- return diag;
-
- /*
- * Using the starting address as
- * the first element in the list, and assuming that
- * the list ends with a null pointer.
- */
-
- va = addr;
- command = kdb_strdup(argv[3], GFP_KDB);
- if (!command) {
- kdb_printf("%s: cannot duplicate command\n", __func__);
- return 0;
- }
- /* Recursive use of kdb_parse, do not use argv after this point */
- argv = NULL;
-
- while (va) {
- char buf[80];
-
- if (KDB_FLAG(CMD_INTERRUPT))
- goto out;
-
- sprintf(buf, "%s " kdb_machreg_fmt "\n", command, va);
- diag = kdb_parse(buf);
- if (diag)
- goto out;
-
- addr = va + linkoffset;
- if (kdb_getword(&va, addr, sizeof(va)))
- goto out;
- }
-
-out:
- kfree(command);
- return diag;
-}
-
static int kdb_kgdb(int argc, const char **argv)
{
return KDB_CMD_KGDB;
@@ -2866,8 +2803,6 @@ static void __init kdb_inittab(void)
kdb_register_repeat("btt", kdb_bt, "<vaddr>",
"Backtrace process given its struct task address", 0,
KDB_REPEAT_NONE);
- kdb_register_repeat("ll", kdb_ll, "<first-element> <linkoffset> <cmd>",
- "Execute cmd for each element in linked list", 0, KDB_REPEAT_NONE);
kdb_register_repeat("env", kdb_env, "",
"Show environment variables", 0, KDB_REPEAT_NONE);
kdb_register_repeat("set", kdb_set, "",