linux-kernel - [PATCH 2/6] ftrace: inline the code from ftrace_dyn_table

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Date:	Thu, 20 Feb 2014 11:33:03 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	rostedt@...dmis.org
Cc:	jirislaby@...il.com, linux-kernel@...r.kernel.org,
	Jiri Slaby <jslaby@...e.cz>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>
Subject: [PATCH 2/6] ftrace: inline the code from ftrace_dyn_table_alloc

The function used to do allocations some time ago. This no longer
happens and it only checks the count and prints some info. This patch
inlines the body to the only caller. There are two reasons:
* the name of the function was misleading
* it's clear what is going on in ftrace_init now

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
---
 kernel/trace/ftrace.c | 25 ++++++-------------------
 1 file changed, 6 insertions(+), 19 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index c321fed01e91..2938a14ae326 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2457,22 +2457,6 @@ ftrace_allocate_pages(unsigned long num_to_init)
 	return NULL;
 }
 
-static int __init ftrace_dyn_table_alloc(unsigned long num_to_init)
-{
-	int cnt;
-
-	if (!num_to_init) {
-		pr_info("ftrace: No functions to be traced?\n");
-		return -1;
-	}
-
-	cnt = num_to_init / ENTRIES_PER_PAGE;
-	pr_info("ftrace: allocating %ld entries in %d pages\n",
-		num_to_init, cnt + 1);
-
-	return 0;
-}
-
 #define FTRACE_BUFF_MAX (KSYM_SYMBOL_LEN+4) /* room for wildcards */
 
 struct ftrace_iterator {
@@ -4365,10 +4349,13 @@ void __init ftrace_init(void)
 		goto failed;
 
 	count = __stop_mcount_loc - __start_mcount_loc;
-
-	ret = ftrace_dyn_table_alloc(count);
-	if (ret)
+	if (!count) {
+		pr_info("ftrace: No functions to be traced?\n");
 		goto failed;
+	}
+
+	pr_info("ftrace: allocating %ld entries in %ld pages\n",
+		count, count / ENTRIES_PER_PAGE + 1);
 
 	last_ftrace_enabled = ftrace_enabled = 1;
 
-- 
1.8.5.2

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