linux-kernel - [PATCH 1/2] kallsyms: Allow kernel symbols in L1 to be found in Blackfin architecture

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Date:	Fri, 25 Apr 2008 18:28:18 +0800
From:	Bryan Wu <cooloney@...nel.org>
To:	pmarques@...popie.com, linux-kernel@...r.kernel.org
Cc:	Robin Getz <robin.getz@...log.com>, Bryan Wu <cooloney@...nel.org>
Subject: [PATCH 1/2] kallsyms: Allow kernel symbols in L1 to be found in Blackfin architecture

From: Robin Getz <robin.getz@...log.com>

Add _stext_l1, _etext_l1 for the L1 memory section in Blackfin.

Signed-off-by: Robin Getz <robin.getz@...log.com>
Signed-off-by: Bryan Wu <cooloney@...nel.org>
---
 kernel/kallsyms.c  |    6 +++++-
 scripts/kallsyms.c |    8 +++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index f091d13..456d1f6 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -55,7 +55,11 @@ static inline int is_kernel_inittext(unsigned long addr)
 
 static inline int is_kernel_text(unsigned long addr)
 {
-	if (addr >= (unsigned long)_stext && addr <= (unsigned long)_etext)
+	if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext)
+#if defined(CONFIG_BLACKFIN)
+             || (addr >= (unsigned long)_stext_l1 && addr <= (unsigned long)_etext_l1)
+#endif
+	)
 		return 1;
 	return in_gate_area_no_task(addr);
 }
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index c912137..0f7269f 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -41,6 +41,7 @@ struct sym_entry {
 static struct sym_entry *table;
 static unsigned int table_size, table_cnt;
 static unsigned long long _text, _stext, _etext, _sinittext, _einittext;
+static unsigned long long _stext_l1, _etext_l1;
 static int all_symbols = 0;
 static char symbol_prefix_char = '\0';
 
@@ -98,6 +99,10 @@ static int read_symbol(FILE *in, struct sym_entry *s)
 		_sinittext = s->addr;
 	else if (strcmp(sym, "_einittext") == 0)
 		_einittext = s->addr;
+	 else if (strcmp(sym, "_stext_l1" ) == 0)
+		_stext_l1 = s->addr;
+	else if (strcmp(sym, "_etext_l1" ) == 0)
+		_etext_l1 = s->addr;
 	else if (toupper(stype) == 'A')
 	{
 		/* Keep these useful absolute symbols */
@@ -160,7 +165,8 @@ static int symbol_valid(struct sym_entry *s)
 	 * and inittext sections are discarded */
 	if (!all_symbols) {
 		if ((s->addr < _stext || s->addr > _etext)
-		    && (s->addr < _sinittext || s->addr > _einittext))
+		    && (s->addr < _sinittext || s->addr > _einittext)
+		    && (s->addr < _stext_l1 || s->addr > _etext_l1))
 			return 0;
 		/* Corner case.  Discard any symbols with the same value as
 		 * _etext _einittext; they can move between pass 1 and 2 when
-- 
1.5.5
--
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