diff options
| author | Satyajit Desai <sadesai@codeaurora.org> | 2016-06-27 12:39:34 -0700 |
|---|---|---|
| committer | Satyajit Desai <sadesai@codeaurora.org> | 2016-08-19 14:56:53 -0700 |
| commit | c34bf4be22d64499449d1cfe550b05365d048403 (patch) | |
| tree | 9a1558daae6ed11ba043063b2ab588c227e191c6 /include/linux | |
| parent | 0c8cf716fa02d0f6b6ef2ef1446f9f4819fc83dd (diff) | |
coresight: abort coresight tracing on kernel crash
Add trace events to control aborting CoreSight trace
dynamically based on module parameter.
Coresight driver will dump any trace present in the current sink
in case we hit a kernel panic, user fault or an undefined instruction.
Change-Id: Iee1ccf5cbd7b767753a3115c0570e63fbe2aa8f3
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/coresight.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 903a8e852f5d..66bf56640fe1 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -194,10 +194,12 @@ struct coresight_device { * Operations available for sinks * @enable: enables the sink. * @disable: disables the sink. + * @abort: captures sink trace on abort */ struct coresight_ops_sink { int (*enable)(struct coresight_device *csdev); void (*disable)(struct coresight_device *csdev); + void (*abort)(struct coresight_device *csdev); }; /** @@ -239,6 +241,7 @@ extern int coresight_enable(struct coresight_device *csdev); extern void coresight_disable(struct coresight_device *csdev); extern int coresight_timeout(void __iomem *addr, u32 offset, int position, int value); +extern void coresight_abort(void); #else static inline struct coresight_device * coresight_register(struct coresight_desc *desc) { return NULL; } @@ -248,6 +251,7 @@ coresight_enable(struct coresight_device *csdev) { return -ENOSYS; } static inline void coresight_disable(struct coresight_device *csdev) {} static inline int coresight_timeout(void __iomem *addr, u32 offset, int position, int value) { return 1; } +static inline void coresight_abort(void) {} #endif #if defined(CONFIG_OF) && defined(CONFIG_CORESIGHT) |