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| author |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-03-23 22:29:02 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-03-25 22:29:45 -0700 |
| commit | dc5192c449368eed3385f4405670aa3ed21d6270 (patch) | |
| tree | 9875fe39fdbebb01dd5649cf2dbfee809ccead83 /include/linux/remoteproc.h | |
| parent | remoteproc: Traverse rproc_list under RCU read lock (diff) | |
| download | linux-dev-dc5192c449368eed3385f4405670aa3ed21d6270.tar.xz linux-dev-dc5192c449368eed3385f4405670aa3ed21d6270.zip | |
remoteproc: Introduce "panic" callback in ops
Introduce generic support for handling kernel panics in remoteproc
drivers, in order to allow operations needed for aiding in post mortem
system debugging, such as flushing caches etc.
The function can return a number of milliseconds needed by the remote to
"settle" and the core will wait the longest returned duration before
returning from the panic handler.
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200324052904.738594-3-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'include/linux/remoteproc.h')
| -rw-r--r-- | include/linux/remoteproc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index ed127b2d35ca..9c07d7958c53 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -369,6 +369,8 @@ enum rsc_handling_status { * expects to find it * @sanity_check: sanity check the fw image * @get_boot_addr: get boot address to entry point specified in firmware + * @panic: optional callback to react to system panic, core will delay + * panic at least the returned number of milliseconds */ struct rproc_ops { int (*start)(struct rproc *rproc); @@ -383,6 +385,7 @@ struct rproc_ops { int (*load)(struct rproc *rproc, const struct firmware *fw); int (*sanity_check)(struct rproc *rproc, const struct firmware *fw); u64 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw); + unsigned long (*panic)(struct rproc *rproc); }; /** |