kdb: Fix dmesg/bta scroll to quit with 'q'

jwessel · jwessel · commit d1871b38fccd · 2012-10-12T06:37:35.000-05:00
If you press 'q' the pager should exit instead of printing everything
from dmesg which can really bog down a 9600 baud serial link.

The same is true for the bta command.

Signed-off-by: Jason Wessel &lt;jason.wessel@windriver.com&gt;
diff --git a/kernel/debug/kdb/kdb_bt.c b/kernel/debug/kdb/kdb_bt.c
@@ -129,6 +129,8 @@ kdb_bt(int argc, const char **argv)
 		}
 		/* Now the inactive tasks */
 		kdb_do_each_thread(g, p) {
+			if (KDB_FLAG(CMD_INTERRUPT))
+				return 0;
 			if (task_curr(p))
 				continue;
 			if (kdb_bt1(p, mask, argcount, btaprompt))
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
@@ -2100,6 +2100,8 @@ static int kdb_dmesg(int argc, const char **argv)
 		}
 		if (!lines--)
 			break;
+		if (KDB_FLAG(CMD_INTERRUPT))
+			return 0;
 
 		kdb_printf("%.*s\n", (int)len - 1, buf);
 	}

Original file line number	Diff line number	Diff line change
`@@ -129,6 +129,8 @@ kdb_bt(int argc, const char **argv)`
`129`	`129`	`}`
`130`	`130`	`/* Now the inactive tasks */`
`131`	`131`	`kdb_do_each_thread(g, p) {`
	`132`	`+ if (KDB_FLAG(CMD_INTERRUPT))`
	`133`	`+ return 0;`
`132`	`134`	`if (task_curr(p))`
`133`	`135`	`continue;`
`134`	`136`	`if (kdb_bt1(p, mask, argcount, btaprompt))`
Original file line number	Diff line number	Diff line change
`@@ -2100,6 +2100,8 @@ static int kdb_dmesg(int argc, const char **argv)`
`2100`	`2100`	`}`
`2101`	`2101`	`if (!lines--)`
`2102`	`2102`	`break;`
	`2103`	`+ if (KDB_FLAG(CMD_INTERRUPT))`
	`2104`	`+ return 0;`
`2103`	`2105`
`2104`	`2106`	`kdb_printf("%.*s\n", (int)len - 1, buf);`
`2105`	`2107`	`}`