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| author |   Mike Leach <mike.leach@linaro.org> | 2021-08-18 13:40:19 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-18 22:33:28 +0200 |
| commit | 7fdc9bb2ce113c5318fdacbb717897fede81949d (patch) | |
| tree | fef93a47a41169ac91ab943966d075d20fa0b60e /drivers/hwtracing/coresight/coresight-cfg-preload.h | |
| parent | coresight: etm4x: Add complex configuration handlers to etmv4 (diff) | |
| download | linux-dev-7fdc9bb2ce113c5318fdacbb717897fede81949d.tar.xz linux-dev-7fdc9bb2ce113c5318fdacbb717897fede81949d.zip | |
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-cfg-preload.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-cfg-preload.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-cfg-preload.h b/drivers/hwtracing/coresight/coresight-cfg-preload.h new file mode 100644 index 000000000000..21299e175477 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-cfg-preload.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright(C) 2020 Linaro Limited. All rights reserved. + * Author: Mike Leach <mike.leach@linaro.org> + */ + +/* declare preloaded configurations and features */ + +/* from coresight-cfg-afdo.c - etm 4x features */ +#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X) +extern struct cscfg_feature_desc strobe_etm4x; +extern struct cscfg_config_desc afdo_etm4x; +#endif |