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coresight-etm3x: Change the name of the ctxid_val to ctxid_pid

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'ctxid_val' array was used to store the value of ETM context ID comparator
which actually stores the process ID to be traced, so using 'ctxid_pid' as
its name instead make it easier to understand.

This patch also changes the ABI, it is normally not allowed, but
fortunately it is a testing ABI and very new for now. Nevertheless,
if you don't think it should be changed, we could always add an alias
for userspace.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunyan Zhang 2015-07-31 09:37:24 -06:00 committed by Greg Kroah-Hartman
parent c35aaa1379
commit 414a1417d7
3 changed files with 11 additions and 11 deletions
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2
Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x
View File

@ -112,7 +112,7 @@ KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Mask to apply to all the context ID comparator.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_val
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_pid
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>

4
drivers/hwtracing/coresight/coresight-etm.h
View File

@ -183,7 +183,7 @@
* @seq_13_event: event causing the transition from 1 to 3.
* @seq_curr_state: current value of the sequencer register.
* @ctxid_idx: index for the context ID registers.
* @ctxid_val: value for the context ID to trigger on.
* @ctxid_pid: value for the context ID to trigger on.
* @ctxid_mask: mask applicable to all the context IDs.
* @sync_freq: Synchronisation frequency.
* @timestamp_event: Defines an event that requests the insertion
@ -235,7 +235,7 @@ struct etm_drvdata {
u32 seq_13_event;
u32 seq_curr_state;
u8 ctxid_idx;
u32 ctxid_val[ETM_MAX_CTXID_CMP];
u32 ctxid_pid[ETM_MAX_CTXID_CMP];
u32 ctxid_mask;
u32 sync_freq;
u32 timestamp_event;

16
drivers/hwtracing/coresight/coresight-etm3x.c
View File

@ -238,7 +238,7 @@ static void etm_set_default(struct etm_drvdata *drvdata)
drvdata->seq_curr_state = 0x0;
drvdata->ctxid_idx = 0x0;
for (i = 0; i < drvdata->nr_ctxid_cmp; i++)
drvdata->ctxid_val[i] = 0x0;
drvdata->ctxid_pid[i] = 0x0;
drvdata->ctxid_mask = 0x0;
}
@ -289,7 +289,7 @@ static void etm_enable_hw(void *info)
for (i = 0; i < drvdata->nr_ext_out; i++)
etm_writel(drvdata, ETM_DEFAULT_EVENT_VAL, ETMEXTOUTEVRn(i));
for (i = 0; i < drvdata->nr_ctxid_cmp; i++)
etm_writel(drvdata, drvdata->ctxid_val[i], ETMCIDCVRn(i));
etm_writel(drvdata, drvdata->ctxid_pid[i], ETMCIDCVRn(i));
etm_writel(drvdata, drvdata->ctxid_mask, ETMCIDCMR);
etm_writel(drvdata, drvdata->sync_freq, ETMSYNCFR);
/* No external input selected */
@ -1386,20 +1386,20 @@ static ssize_t ctxid_idx_store(struct device *dev,
}
static DEVICE_ATTR_RW(ctxid_idx);
static ssize_t ctxid_val_show(struct device *dev,
static ssize_t ctxid_pid_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned long val;
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
spin_lock(&drvdata->spinlock);
val = drvdata->ctxid_val[drvdata->ctxid_idx];
val = drvdata->ctxid_pid[drvdata->ctxid_idx];
spin_unlock(&drvdata->spinlock);
return sprintf(buf, "%#lx\n", val);
}
static ssize_t ctxid_val_store(struct device *dev,
static ssize_t ctxid_pid_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
@ -1412,12 +1412,12 @@ static ssize_t ctxid_val_store(struct device *dev,
return ret;
spin_lock(&drvdata->spinlock);
drvdata->ctxid_val[drvdata->ctxid_idx] = val;
drvdata->ctxid_pid[drvdata->ctxid_idx] = val;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(ctxid_val);
static DEVICE_ATTR_RW(ctxid_pid);
static ssize_t ctxid_mask_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -1609,7 +1609,7 @@ static struct attribute *coresight_etm_attrs[] = {
&dev_attr_seq_13_event.attr,
&dev_attr_seq_curr_state.attr,
&dev_attr_ctxid_idx.attr,
&dev_attr_ctxid_val.attr,
&dev_attr_ctxid_pid.attr,
&dev_attr_ctxid_mask.attr,
&dev_attr_sync_freq.attr,
&dev_attr_timestamp_event.attr,