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authorIngo Molnar <mingo@elte.hu>2006-07-03 00:24:38 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:02 -0700
commit8637c09901049f061b94f684915d4f18ecf91d79 (patch)
tree83ca3ab38ab4d12f4e10176ba01ae33809388767 /kernel
parentf0a5c315eb266edc608a29971bb4ff1a3025c58f (diff)
downloadblackbird-op-linux-8637c09901049f061b94f684915d4f18ecf91d79.tar.gz
blackbird-op-linux-8637c09901049f061b94f684915d4f18ecf91d79.zip
[PATCH] lockdep: stacktrace subsystem, core
Framework to generate and save stacktraces quickly, without printing anything to the console. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/Makefile1
-rw-r--r--kernel/stacktrace.c24
2 files changed, 25 insertions, 0 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index 82fb182f6f61..e7fd20e70f1b 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -10,6 +10,7 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o profile.o \
kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \
hrtimer.o
+obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += time/
obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
obj-$(CONFIG_FUTEX) += futex.o
diff --git a/kernel/stacktrace.c b/kernel/stacktrace.c
new file mode 100644
index 000000000000..b71816e47a30
--- /dev/null
+++ b/kernel/stacktrace.c
@@ -0,0 +1,24 @@
+/*
+ * kernel/stacktrace.c
+ *
+ * Stack trace management functions
+ *
+ * Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
+ */
+#include <linux/sched.h>
+#include <linux/kallsyms.h>
+#include <linux/stacktrace.h>
+
+void print_stack_trace(struct stack_trace *trace, int spaces)
+{
+ int i, j;
+
+ for (i = 0; i < trace->nr_entries; i++) {
+ unsigned long ip = trace->entries[i];
+
+ for (j = 0; j < spaces + 1; j++)
+ printk(" ");
+ print_ip_sym(ip);
+ }
+}
+
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