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| author |   Mike Leach <mike.leach@linaro.org> | 2021-11-24 20:00:37 +0000 |
|---|---|---|
| committer |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2021-11-26 11:34:27 -0700 |
| commit | 7ebd0ec6cf947c3292f21a5edf2d37c9e7317554 (patch) | |
| tree | b53d82d52a379ec52f72a4d50a8b454de43f621f /drivers/hwtracing/coresight/coresight-etm4x-core.c | |
| parent | coresight: syscfg: Example CoreSight configuration loadable module (diff) | |
| download | linux-dev-7ebd0ec6cf947c3292f21a5edf2d37c9e7317554.tar.xz linux-dev-7ebd0ec6cf947c3292f21a5edf2d37c9e7317554.zip | |
coresight: configfs: Allow configfs to activate configuration
Adds configfs attributes to allow a configuration to be enabled for use
when sysfs is used to control CoreSight.
perf retains independent enabling of configurations.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Link: https://lore.kernel.org/r/20211124200038.28662-6-mike.leach@linaro.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x-core.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x-core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 86a313857b58..bf18128cf5de 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -722,7 +722,16 @@ static int etm4_enable_sysfs(struct coresight_device *csdev) { struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct etm4_enable_arg arg = { }; - int ret; + unsigned long cfg_hash; + int ret, preset; + + /* enable any config activated by configfs */ + cscfg_config_sysfs_get_active_cfg(&cfg_hash, &preset); + if (cfg_hash) { + ret = cscfg_csdev_enable_active_config(csdev, cfg_hash, preset); + if (ret) + return ret; + } spin_lock(&drvdata->spinlock); |