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| author | Steven Rostedt | 2009-03-13 00:42:29 +0100 |
|---|---|---|
| committer | Steven Rostedt | 2009-03-13 02:15:01 +0100 |
| commit | e447e1df2e568cd43d1918963c9f09fae85aea57 (patch) | |
| tree | a73edfcc1b603a921ed7e332ce614e1345385100 /kernel/softirq.c | |
| parent | tracing: fix stack tracer header (diff) | |
| download | kernel-qcow2-linux-e447e1df2e568cd43d1918963c9f09fae85aea57.tar.gz kernel-qcow2-linux-e447e1df2e568cd43d1918963c9f09fae85aea57.tar.xz kernel-qcow2-linux-e447e1df2e568cd43d1918963c9f09fae85aea57.zip | |
tracing: explain why stack tracer is empty
If the stack tracing is disabled (by default) the stack_trace file
will only contain the header:
# cat /debug/tracing/stack_trace
Depth Size Location (0 entries)
----- ---- --------
This can be frustrating to a developer that does not realize that the
stack tracer is disabled. This patch adds the following text:
# cat /debug/tracing/stack_trace
Depth Size Location (0 entries)
----- ---- --------
#
# Stack tracer disabled
#
# To enable the stack tracer, either add 'stacktrace' to the
# kernel command line
# or 'echo 1 > /proc/sys/kernel/stack_tracer_enabled'
#
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/softirq.c')
0 files changed, 0 insertions, 0 deletions