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coresight: etm4x: configuring include/exclude function 

The include/exclude function of a tracer is applicable to address
range and start/stop filters.  To avoid duplication and reuse code
moving the include/exclude configuration to a function of its own.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier 2016-08-25 15:19:16 -06:00 committed by Greg Kroah-Hartman
parent 6cccf66354
commit f0d30cc30e
1 changed files with 25 additions and 10 deletions
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35
drivers/hwtracing/coresight/coresight-etm4x.c
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@ -205,13 +205,6 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata,
/* Always start from the default config */
etm4_set_default(config);
/*
* By default the tracers are configured to trace the whole address
* range. Narrow the field only if requested by user space.
*/
if (config->mode)
etm4_config_trace_mode(config);
/* Go from generic option to ETMv4 specifics */
if (attr->config & BIT(ETM_OPT_CYCACC))
config->cfg |= ETMv4_MODE_CYCACC;
@ -581,14 +574,28 @@ static void etm4_set_default_config(struct etmv4_config *config)
config->vinst_ctrl |= BIT(0);
}
static void etm4_set_comparator_filter(struct etmv4_config *config,
u64 start, u64 stop, int comparator)
static u64 etm4_get_access_type(struct etmv4_config *config)
{
u64 access_type = 0;
/* EXLEVEL_NS, bits[12:15], always stay away from hypervisor mode. */
/*
* EXLEVEL_NS, bits[15:12]
* The Exception levels are:
* Bit[12] Exception level 0 - Application
* Bit[13] Exception level 1 - OS
* Bit[14] Exception level 2 - Hypervisor
* Bit[15] Never implemented
*
* Always stay away from hypervisor mode.
*/
access_type = ETM_EXLEVEL_NS_HYP;
if (config->mode & ETM_MODE_EXCL_KERN)
access_type |= ETM_EXLEVEL_NS_OS;
if (config->mode & ETM_MODE_EXCL_USER)
access_type |= ETM_EXLEVEL_NS_APP;
/*
* EXLEVEL_S, bits[11:8], don't trace anything happening
* in secure state.
@ -597,6 +604,14 @@ static void etm4_set_comparator_filter(struct etmv4_config *config,
ETM_EXLEVEL_S_OS |
ETM_EXLEVEL_S_HYP);
return access_type;
}
static void etm4_set_comparator_filter(struct etmv4_config *config,
u64 start, u64 stop, int comparator)
{
u64 access_type = etm4_get_access_type(config);
/* First half of default address comparator */
config->addr_val[comparator] = start;
config->addr_acc[comparator] = access_type;