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| author | Mike Leach <mike.leach@linaro.org> | 2021-08-18 22:40:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-18 23:33:28 +0300 |
| commit | 7fdc9bb2ce113c5318fdacbb717897fede81949d (patch) | |
| tree | fef93a47a41169ac91ab943966d075d20fa0b60e /drivers/hwtracing/coresight/coresight-syscfg.h | |
| parent | 810ac401db1fe432020d7936a199591000de8279 (diff) | |
| download | linux-7fdc9bb2ce113c5318fdacbb717897fede81949d.tar.xz | |
coresight: config: Add preloaded configurations
Preload set of configurations.
This patch creates a small set of preloaded configurations and features
that are available immediately after coresight has been initialised.
The current set provides a strobing feature for ETMv4, that creates a
periodic sampling of trace by switching trace generation on and off
using counters in the ETM.
A configuration called "autofdo" is also provided that uses the 'strobing'
feature and provides a couple of preset values, selectable on the perf
command line.
Link: https://lore.kernel.org/r/20210723165444.1048-9-mike.leach@linaro.org
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210818194022.379573-9-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-syscfg.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-syscfg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-syscfg.h b/drivers/hwtracing/coresight/coresight-syscfg.h index a52775890670..7bb8c8e497ba 100644 --- a/drivers/hwtracing/coresight/coresight-syscfg.h +++ b/drivers/hwtracing/coresight/coresight-syscfg.h @@ -56,6 +56,7 @@ struct cscfg_registered_csdev { /* internal core operations for cscfg */ int __init cscfg_init(void); void cscfg_exit(void); +int cscfg_preload(void); /* syscfg manager external API */ int cscfg_load_config_sets(struct cscfg_config_desc **cfg_descs, |