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authorSteven Rostedt <srostedt@redhat.com>2011-12-19 22:01:00 -0500
committerSteven Rostedt <rostedt@goodmis.org>2011-12-21 07:26:49 -0500
commit762e1207889b3451c50d365b741af6f9ce958886 (patch)
treedcb1f4eacbddfa342181a29a97eb9b994922b009 /Documentation/kernel-parameters.txt
parent2a85a37f168d2b4d74d493b578af4dc9032be92e (diff)
tracing: Have stack tracing set filtered functions at boot
Add stacktrace_filter= to the kernel command line that lets the user pick specific functions to check the stack on. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index fd5c913c33c1..fde2ae06539a 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2435,6 +2435,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
stacktrace [FTRACE]
Enabled the stack tracer on boot up.
+ stacktrace_filter=[function-list]
+ [FTRACE] Limit the functions that the stack tracer
+ will trace at boot up. function-list is a comma separated
+ list of functions. This list can be changed at run
+ time by the stack_trace_filter file in the debugfs
+ tracing directory. Note, this enables stack tracing
+ and the stacktrace above is not needed.
+
sti= [PARISC,HW]
Format: <num>
Set the STI (builtin display/keyboard on the HP-PARISC