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| author |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-04-05 11:53:47 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-01 14:12:14 -0700 |
| commit | c38a9ec2b2c12c38abca0b7954ed793f26969835 (patch) | |
| tree | 04fc65019dc3f9af80d36db050568a8f36a63baa /drivers/hwtracing/coresight/coresight-etm4x.h | |
| parent | coresight: etm4x: unlocking tracers in default arch init (diff) | |
| download | linux-dev-c38a9ec2b2c12c38abca0b7954ed793f26969835.tar.xz linux-dev-c38a9ec2b2c12c38abca0b7954ed793f26969835.zip | |
coresight: etm4x: moving etm_drvdata::enable to atomic field
Similarly to ETMv3, moving etmv4_drvdata::enable to an atomic
type that gives the 'mode' of a tracer and prevents multiple,
simultanious access by different subsystems.
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-etm4x.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index 6ff499bfb2f2..f7748ae63451 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -13,6 +13,7 @@ #ifndef _CORESIGHT_CORESIGHT_ETM_H #define _CORESIGHT_CORESIGHT_ETM_H +#include <asm/local.h> #include <linux/spinlock.h> #include "coresight-priv.h" @@ -290,6 +291,7 @@ struct etmv4_config { * @dev: The device entity associated to this component. * @csdev: Component vitals needed by the framework. * @spinlock: Only one at a time pls. + * @mode: This tracer's mode, i.e sysFS, Perf or disabled. * @cpu: The cpu this component is affined to. * @arch: ETM version number. * @nr_pe: The number of processing entity available for tracing. @@ -316,7 +318,6 @@ struct etmv4_config { * supported for the corresponding Exception level. * @ns_ex_level:In non-secure state, indicates whether instruction tracing is * supported for the corresponding Exception level. - * @enable: Is this ETM currently tracing. * @sticky_enable: true if ETM base configuration has been done. * @boot_enable:True if we should start tracing at boot time. * @os_unlock: True if access to management registers is allowed. @@ -346,6 +347,7 @@ struct etmv4_drvdata { struct device *dev; struct coresight_device *csdev; spinlock_t spinlock; + local_t mode; int cpu; u8 arch; u8 nr_pe; @@ -368,7 +370,6 @@ struct etmv4_drvdata { u8 ccitmin; u8 s_ex_level; u8 ns_ex_level; - bool enable; bool sticky_enable; bool boot_enable; bool os_unlock; |