diff options
Diffstat (limited to 'litmus')
-rw-r--r-- | litmus/Kconfig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/litmus/Kconfig b/litmus/Kconfig index a3341021f05c..d62c417f261e 100644 --- a/litmus/Kconfig +++ b/litmus/Kconfig | |||
@@ -156,7 +156,7 @@ config SCHED_DEBUG_TRACE_SHIFT | |||
156 | default 18 | 156 | default 18 |
157 | help | 157 | help |
158 | 158 | ||
159 | Select the amount of memory needed per CPU for the TRACE() buffer, as a | 159 | Select the amount of memory needed per for the TRACE() buffer, as a |
160 | power of two. The TRACE() buffer is global and statically allocated. If | 160 | power of two. The TRACE() buffer is global and statically allocated. If |
161 | the buffer is too small, there will be holes in the TRACE() log if the | 161 | the buffer is too small, there will be holes in the TRACE() log if the |
162 | buffer-flushing task is starved. | 162 | buffer-flushing task is starved. |
@@ -169,6 +169,11 @@ config SCHED_DEBUG_TRACE_SHIFT | |||
169 | 18 => 256KB | 169 | 18 => 256KB |
170 | 20 => 1MB | 170 | 20 => 1MB |
171 | 171 | ||
172 | This buffer is exported to usespace using a misc device as | ||
173 | 'litmus/log'. On a system with default udev rules, a corresponding | ||
174 | character device node should be created at /dev/litmus/log. The buffer | ||
175 | can be flushed using cat, e.g., 'cat /dev/litmus/log > my_log_file.txt'. | ||
176 | |||
172 | endmenu | 177 | endmenu |
173 | 178 | ||
174 | endmenu | 179 | endmenu |