Merge branch 'master' into for-next

Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.

4 files changed, 37 insertions, 7 deletions

diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index cefd4a11f6d9..bad6786dee88 100644
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -538,7 +538,7 @@ return_normal:
 
 	/*
 	 * For single stepping, try to only enter on the processor
-	 * that was single stepping.  To gaurd against a deadlock, the
+	 * that was single stepping.  To guard against a deadlock, the
 	 * kernel will only try for the value of sstep_tries before
 	 * giving up and continuing on.
 	 */
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 481a7bd2dfe7..a11db956dd62 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -1093,3 +1093,33 @@ int gdbstub_state(struct kgdb_state *ks, char *cmd)
 	put_packet(remcom_out_buffer);
 	return 0;
 }
+
+/**
+ * gdbstub_exit - Send an exit message to GDB
+ * @status: The exit code to report.
+ */
+void gdbstub_exit(int status)
+{
+	unsigned char checksum, ch, buffer[3];
+	int loop;
+
+	buffer[0] = 'W';
+	buffer[1] = hex_asc_hi(status);
+	buffer[2] = hex_asc_lo(status);
+
+	dbg_io_ops->write_char('$');
+	checksum = 0;
+
+	for (loop = 0; loop < 3; loop++) {
+		ch = buffer[loop];
+		checksum += ch;
+		dbg_io_ops->write_char(ch);
+	}
+
+	dbg_io_ops->write_char('#');
+	dbg_io_ops->write_char(hex_asc_hi(checksum));
+	dbg_io_ops->write_char(hex_asc_lo(checksum));
+
+	/* make sure the output is flushed, lest the bootloader clobber it */
+	dbg_io_ops->flush();
+}
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index bd3e8e29caa3..be14779bcef6 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -78,7 +78,7 @@ static unsigned int kdb_continue_catastrophic;
 static kdbtab_t *kdb_commands;
 #define KDB_BASE_CMD_MAX 50
 static int kdb_max_commands = KDB_BASE_CMD_MAX;
-static kdbtab_t kdb_base_commands[50];
+static kdbtab_t kdb_base_commands[KDB_BASE_CMD_MAX];
 #define for_each_kdbcmd(cmd, num)					\
 	for ((cmd) = kdb_base_commands, (num) = 0;			\
 	     num < kdb_max_commands;					\
@@ -441,9 +441,9 @@ static int kdb_check_regs(void)
  *	symbol name, and offset to the caller.
  *
  *	The argument may consist of a numeric value (decimal or
- *	hexidecimal), a symbol name, a register name (preceeded by the
+ *	hexidecimal), a symbol name, a register name (preceded by the
  *	percent sign), an environment variable with a numeric value
- *	(preceeded by a dollar sign) or a simple arithmetic expression
+ *	(preceded by a dollar sign) or a simple arithmetic expression
  *	consisting of a symbol name, +/-, and a numeric constant value
  *	(offset).
  * Parameters:
@@ -1335,7 +1335,7 @@ void kdb_print_state(const char *text, int value)
  *	error		The hardware-defined error code
  *	reason2		kdb's current reason code.
  *			Initially error but can change
- *			acording to kdb state.
+ *			according to kdb state.
  *	db_result	Result code from break or debug point.
  *	regs		The exception frame at time of fault/breakpoint.
  *			should always be valid.
@@ -2892,7 +2892,7 @@ static void __init kdb_inittab(void)
 	  "Send a signal to a process", 0, KDB_REPEAT_NONE);
 	kdb_register_repeat("summary", kdb_summary, "",
 	  "Summarize the system", 4, KDB_REPEAT_NONE);
-	kdb_register_repeat("per_cpu", kdb_per_cpu, "",
+	kdb_register_repeat("per_cpu", kdb_per_cpu, "<sym> [<bytes>] [<cpu>]",
 	  "Display per_cpu variables", 3, KDB_REPEAT_NONE);
 	kdb_register_repeat("grephelp", kdb_grep_help, "",
 	  "Display help on | grep", 0, KDB_REPEAT_NONE);
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 6b2485dcb050..5532dd37aa86 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -545,7 +545,7 @@ int kdb_putword(unsigned long addr, unsigned long word, size_t size)
  *	Mask for process state.
  * Notes:
  *	The mask folds data from several sources into a single long value, so
- *	be carefull not to overlap the bits.  TASK_* bits are in the LSB,
+ *	be careful not to overlap the bits.  TASK_* bits are in the LSB,
  *	special cases like UNRUNNABLE are in the MSB.  As of 2.6.10-rc1 there
  *	is no overlap between TASK_* and EXIT_* but that may not always be
  *	true, so EXIT_* bits are shifted left 16 bits before being stored in