kdb: core for kgdb back end (2 of 2)
This patch contains the hooks and instrumentation into kernel which live outside the kernel/debug directory, which the kdb core will call to run commands like lsmod, dmesg, bt etc... CC: linux-arch@vger.kernel.org Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Martin Hicks <mort@sgi.com>
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@@ -16,6 +16,7 @@
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#include <linux/init.h>
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#include <linux/seq_file.h>
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#include <linux/fs.h>
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#include <linux/kdb.h>
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#include <linux/err.h>
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#include <linux/proc_fs.h>
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#include <linux/sched.h> /* for cond_resched */
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@@ -516,6 +517,26 @@ static int kallsyms_open(struct inode *inode, struct file *file)
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return ret;
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}
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#ifdef CONFIG_KGDB_KDB
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const char *kdb_walk_kallsyms(loff_t *pos)
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{
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static struct kallsym_iter kdb_walk_kallsyms_iter;
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if (*pos == 0) {
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memset(&kdb_walk_kallsyms_iter, 0,
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sizeof(kdb_walk_kallsyms_iter));
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reset_iter(&kdb_walk_kallsyms_iter, 0);
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}
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while (1) {
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if (!update_iter(&kdb_walk_kallsyms_iter, *pos))
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return NULL;
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++*pos;
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/* Some debugging symbols have no name. Ignore them. */
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if (kdb_walk_kallsyms_iter.name[0])
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return kdb_walk_kallsyms_iter.name;
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}
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}
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#endif /* CONFIG_KGDB_KDB */
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static const struct file_operations kallsyms_operations = {
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.open = kallsyms_open,
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.read = seq_read,
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