diff options
| author | Subramaniam Chanderashekarapuram <subramaniam.ca@ti.com> | 2012-06-25 17:43:49 -0500 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2012-09-07 13:05:52 +0800 |
| commit | 4560dd7b8f6028c98f33920ed5f14fa96d972dcf (patch) | |
| tree | d91c6e15b2c64f24ab2e9585ec2079cd742be2ad /include | |
| parent | e59d076a77e700513a6f26a12ff41071e202c227 (diff) | |
remoteproc: implement last trace for remoteproc
The last trace is a way of preserving the remoteproc traces past
remoteproc recovery. This is achieved by creating a new last_trace
debugfs entry during a crash for each trace entry, and copying the
trace buffer contents into the corresponding last trace entry. This
copy can then be read out using a debugfs entry. The trace entries
themselves are cleaned up after the copy and are recreated during
recovery.
Something like,
cat <debugfs root>/remoteproc/remoteprocX/traceX_last
should give the traces that were printed out just before the recovery
happened.
Change-Id: I2d6879421022a895dc34dfcc5c003ff33779128c
Signed-off-by: Subramaniam Chanderashekarapuram <subramaniam.ca@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/remoteproc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index 43beddccd95b..fe2c7f6cdd2c 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -425,6 +425,8 @@ enum rproc_err { * @dbg_dir: debugfs directory of this rproc device * @traces: list of trace buffers * @num_traces: number of trace buffers + * @last_traces: list of last trace buffers + * @num_last_traces: number of last trace buffers * @carveouts: list of physically contiguous memory allocations * @mappings: list of iommu mappings we initiated, needed on shutdown * @firmware_loading_complete: marks e/o asynchronous firmware loading @@ -454,6 +456,8 @@ struct rproc { struct dentry *dbg_dir; struct list_head traces; int num_traces; + struct list_head last_traces; + int num_last_traces; struct list_head carveouts; struct list_head mappings; struct completion firmware_loading_complete; |