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Message-Id: <1310785241-3799-4-git-send-email-vnagarnaik@google.com>
Date:	Fri, 15 Jul 2011 20:00:41 -0700
From:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org,
	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
Subject: [PATCH 4/4] trace-cmd: Support '+' opcode in print format

The '+' opcode is not supported in the arguments for the print format.
This patch adds support for it.

Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@...gle.com>
---
 parse-events.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/parse-events.c b/parse-events.c
index 068c77f..2e39415 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -2033,6 +2033,18 @@ static int arg_num_eval(struct print_arg *arg, long long *val)
 				break;
 			*val = left - right;
 			break;
+		case '+':
+			if (arg->op.left->type == PRINT_NULL)
+				left = 0;
+			else
+				ret = arg_num_eval(arg->op.left, &left);
+			if (!ret)
+				break;
+			ret = arg_num_eval(arg->op.right, &right);
+			if (!ret)
+				break;
+			*val = left + right;
+			break;
 		default:
 			do_warning("unknown op '%s'", arg->op.op);
 			ret = 0;
-- 
1.7.3.1

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