* [GIT PULL] stacktrace updates for v2.6.30
@ 2009-03-31 13:39 Ingo Molnar
0 siblings, 0 replies; only message in thread
From: Ingo Molnar @ 2009-03-31 13:39 UTC (permalink / raw)
To: Linus Torvalds; +Cc: linux-kernel, Andrew Morton, Peter Zijlstra
Linus,
Please pull the latest stacktrace-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git stacktrace-for-linus
One patch to improve saved lockdep stack-traces.
Thanks,
Ingo
------------------>
Ingo Molnar (1):
symbols, stacktrace: look up init symbols after module symbols
kernel/extable.c | 25 ++++++++++++++++++++++---
1 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/kernel/extable.c b/kernel/extable.c
index e136ed8..c46da6a 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -41,6 +41,14 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
return e;
}
+static inline int init_kernel_text(unsigned long addr)
+{
+ if (addr >= (unsigned long)_sinittext &&
+ addr <= (unsigned long)_einittext)
+ return 1;
+ return 0;
+}
+
__notrace_funcgraph int core_kernel_text(unsigned long addr)
{
if (addr >= (unsigned long)_stext &&
@@ -48,8 +56,7 @@ __notrace_funcgraph int core_kernel_text(unsigned long addr)
return 1;
if (system_state == SYSTEM_BOOTING &&
- addr >= (unsigned long)_sinittext &&
- addr <= (unsigned long)_einittext)
+ init_kernel_text(addr))
return 1;
return 0;
}
@@ -58,7 +65,19 @@ __notrace_funcgraph int __kernel_text_address(unsigned long addr)
{
if (core_kernel_text(addr))
return 1;
- return __module_text_address(addr) != NULL;
+ if (__module_text_address(addr))
+ return 1;
+ /*
+ * There might be init symbols in saved stacktraces.
+ * Give those symbols a chance to be printed in
+ * backtraces (such as lockdep traces).
+ *
+ * Since we are after the module-symbols check, there's
+ * no danger of address overlap:
+ */
+ if (init_kernel_text(addr))
+ return 1;
+ return 0;
}
int kernel_text_address(unsigned long addr)
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2009-03-31 13:39 [GIT PULL] stacktrace updates for v2.6.30 Ingo Molnar
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