X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=Documentation%2Ftrace%2Fftrace.txt;fp=Documentation%2Ftrace%2Fftrace.txt;h=52011815c905cf835f63c74670c8d14c602a95aa;hb=cecbca96da387428e220e307a9c945e37e2f4d9e;hp=03485bfbd7975792f50d54dabf77533938f255c9;hpb=b15c7b1cee119999e9eafcd602d24a595e77adac;p=safe%2Fjmp%2Flinux-2.6

diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
index 03485bf..5201181 100644
--- a/Documentation/trace/ftrace.txt
+++ b/Documentation/trace/ftrace.txt
@@ -1337,12 +1337,14 @@ ftrace_dump_on_oops must be set. To set ftrace_dump_on_oops, one
 can either use the sysctl function or set it via the proc system
 interface.
 
-  sysctl kernel.ftrace_dump_on_oops=1
+  sysctl kernel.ftrace_dump_on_oops=n
 
 or
 
-  echo 1 > /proc/sys/kernel/ftrace_dump_on_oops
+  echo n > /proc/sys/kernel/ftrace_dump_on_oops
 
+If n = 1, ftrace will dump buffers of all CPUs, if n = 2 ftrace will
+only dump the buffer of the CPU that triggered the oops.
 
 Here's an example of such a dump after a null pointer
 dereference in a kernel module: