misc: remove kernel debugger core

The current split between this and the fiq debugger is awkward and does
not have any benefit (the interface between the two is also too simplistic).
The fiq debugger code itself needs a lot of refactoring, part of which
would be to split out some components that are arch indpendent.

So, for now, move this very small piece back into the fiq_debugger.

Change-Id: Ie4ec2a2f5d907be1691a0eb6ae9304aad29ecd14
Signed-off-by: Dima Zavin <dima@android.com>

4 files changed, 0 insertions, 138 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index f3086060639..1fb689eae11 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -230,13 +230,6 @@ config ENCLOSURE_SERVICES
 	  driver (SCSI/ATA) which supports enclosures
 	  or a SCSI enclosure device (SES) to use these services.
 
-config KERNEL_DEBUGGER_CORE
-	bool "Kernel Debugger Core"
-	default n
-	---help---
-	  Generic kernel debugging command processor used by low level
-	  (interrupt context) platform-specific debuggers.
-
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 488ca229904..aefc09cc40b 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -21,7 +21,6 @@ obj-$(CONFIG_SENSORS_BH1770)	+= bh1770glc.o
 obj-$(CONFIG_SENSORS_APDS990X)	+= apds990x.o
 obj-$(CONFIG_SGI_IOC4)		+= ioc4.o
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
-obj-$(CONFIG_KERNEL_DEBUGGER_CORE)	+= kernel_debugger.o
 obj-$(CONFIG_KGDB_TESTS)	+= kgdbts.o
 obj-$(CONFIG_SGI_XP)		+= sgi-xp/
 obj-$(CONFIG_SGI_GRU)		+= sgi-gru/
diff --git a/drivers/misc/kernel_debugger.c b/drivers/misc/kernel_debugger.c
deleted file mode 100644
index 4a9fef6244e..00000000000
--- a/drivers/misc/kernel_debugger.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* drivers/android/kernel_debugger.c
- *
- * Guts of the kernel debugger.
- * Needs something to actually push commands to it.
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/ctype.h>
-#include <linux/device.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/sysrq.h>
-#include <linux/kernel_debugger.h>
-
-#define dprintf(fmt...) (ctxt->printf(ctxt->cookie, fmt))
-
-static void do_ps(struct kdbg_ctxt *ctxt)
-{
-	struct task_struct *g, *p;
-	unsigned state;
-	static const char stat_nam[] = "RSDTtZX";
-
-	dprintf("pid   ppid  prio task            pc\n");
-	read_lock(&tasklist_lock);
-	do_each_thread(g, p) {
-		state = p->state ? __ffs(p->state) + 1 : 0;
-		dprintf("%5d %5d %4d ", p->pid, p->parent->pid, p->prio);
-		dprintf("%-13.13s %c", p->comm,
-			state >= sizeof(stat_nam) ? '?' : stat_nam[state]);
-		if (state == TASK_RUNNING)
-			dprintf(" running\n");
-		else
-			dprintf(" %08lx\n", thread_saved_pc(p));
-	} while_each_thread(g, p);
-	read_unlock(&tasklist_lock);
-}
-
-int log_buf_copy(char *dest, int idx, int len);
-extern int do_syslog(int type, char __user *bug, int count);
-static void do_sysrq(struct kdbg_ctxt *ctxt, char rq)
-{
-	char buf[128];
-	int ret;
-	int idx = 0;
-	do_syslog(5 /* clear */, NULL, 0);
-	handle_sysrq(rq);
-	while (1) {
-		ret = log_buf_copy(buf, idx, sizeof(buf) - 1);
-		if (ret <= 0)
-			break;
-		buf[ret] = 0;
-		dprintf("%s", buf);
-		idx += ret;
-	}
-}
-
-static void do_help(struct kdbg_ctxt *ctxt)
-{
-	dprintf("Kernel Debugger commands:\n");
-	dprintf(" ps            Process list\n");
-	dprintf(" sysrq         sysrq options\n");
-	dprintf(" sysrq <param> Execute sysrq with <param>\n");
-}
-
-int kernel_debugger(struct kdbg_ctxt *ctxt, char *cmd)
-{
-	if (!strcmp(cmd, "ps"))
-		do_ps(ctxt);
-	if (!strcmp(cmd, "sysrq"))
-		do_sysrq(ctxt, 'h');
-	if (!strncmp(cmd, "sysrq ", 6))
-		do_sysrq(ctxt, cmd[6]);
-	if (!strcmp(cmd, "help"))
-		do_help(ctxt);
-
-	return 0;
-}
-
diff --git a/include/linux/kernel_debugger.h b/include/linux/kernel_debugger.h
deleted file mode 100644
index b4dbfe99d79..00000000000
--- a/include/linux/kernel_debugger.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * include/linux/kernel_debugger.h
- *
- * Copyright (C) 2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef _LINUX_KERNEL_DEBUGGER_H_
-#define _LINUX_KERNEL_DEBUGGER_H_
-
-struct kdbg_ctxt {
-	int (*printf)(void *cookie, const char *fmt, ...);
-	void *cookie;
-};
-
-/* kernel_debugger() is called from IRQ context and should
- * use the kdbg_ctxt.printf to write output (do NOT call
- * printk, do operations not safe from IRQ context, etc).
- *
- * kdbg_ctxt.printf will return -1 if there is not enough
- * buffer space or if you are being aborted.  In this case
- * you must return as soon as possible.
- *
- * Return non-zero if more data is available -- if buffer
- * space ran and you had to stop, but could print more,
- * for example.
- *
- * Additional calls where cmd is "more" will be made if
- * the additional data is desired.
- */
-int kernel_debugger(struct kdbg_ctxt *ctxt, char *cmd);
-
-#endif