diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2017-08-02 10:21:57 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 16:05:47 +0200 |
| commit | 0c3fc4d5fa26092853278145aca9b21fa52a3e93 (patch) | |
| tree | 22445053dce96dc4922d04deb5f029a3aaec8c56 /drivers/hwtracing/coresight/coresight-priv.h | |
| parent | 4f871a9f0f6fbb8ab023cca1f0099bf152a5d618 (diff) | |
coresight: Add barrier packet for synchronisation
When a buffer overflow happens the synchronisation patckets usually
present at the beginning of the buffer are lost, a situation that
prevents the decoder from knowing the context of the traces being
decoded.
This patch adds a barrier packet to be used by sink IPs when a buffer
overflow condition is detected. These barrier packets are then used
by the decoding library as markers to force re-synchronisation.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-priv.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-priv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 5f662d82052c..3e25b1dd1a1a 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -56,6 +56,8 @@ static ssize_t name##_show(struct device *_dev, \ } \ static DEVICE_ATTR_RO(name) +extern const u32 barrier_pkt[5]; + enum etm_addr_type { ETM_ADDR_TYPE_NONE, ETM_ADDR_TYPE_SINGLE, |