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Date: Thu, 30 Jan 2014 11:11:07 -0500 From: Adrien Vergé <adrienverge@...il.com> To: Russell King <linux@....linux.org.uk> Cc: Adrien Vergé <adrienverge@...il.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, Ben Dooks <ben.dooks@...ethink.co.uk>, "zhangwei(Jovi)" <jovi.zhangwei@...wei.com>, Andrew Morton <akpm@...ux-foundation.org>, Randy Dunlap <rdunlap@...radead.org>, Mathieu Poirier <mathieu.poirier@...aro.org>, Christopher Covington <cov@...eaurora.org>, Dirk Behme <dirk.behme@...bosch.com>, Michel Dagenais <michel.dagenais@...ymtl.ca>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH V3 2/5] ARM CoreSight: ETM: Use device attributes Replace all kobjects attributes with device attributes. User experience isn't changed since the same files are created in sysfs. Signed-off-by: Adrien Vergé <adrienverge@...il.com> --- arch/arm/kernel/etm.c | 48 +++++++++++++++++++++--------------------------- 1 file changed, 21 insertions(+), 27 deletions(-) diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c index 5192693..7a3ee66 100644 --- a/arch/arm/kernel/etm.c +++ b/arch/arm/kernel/etm.c @@ -433,15 +433,14 @@ static struct amba_driver etb_driver = { }; /* use a sysfs file "trace_running" to start/stop tracing */ -static ssize_t trace_running_show(struct kobject *kobj, - struct kobj_attribute *attr, - char *buf) +static ssize_t trace_running_show(struct device *dev, + struct device_attribute *attr, char *buf) { return sprintf(buf, "%x\n", trace_isrunning(&tracer)); } -static ssize_t trace_running_store(struct kobject *kobj, - struct kobj_attribute *attr, +static ssize_t trace_running_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t n) { unsigned int value; @@ -457,12 +456,11 @@ static ssize_t trace_running_store(struct kobject *kobj, return ret ? : n; } -static struct kobj_attribute trace_running_attr = - __ATTR(trace_running, 0644, trace_running_show, trace_running_store); +DEVICE_ATTR(trace_running, S_IRUGO|S_IWUSR, + trace_running_show, trace_running_store); -static ssize_t trace_info_show(struct kobject *kobj, - struct kobj_attribute *attr, - char *buf) +static ssize_t trace_info_show(struct device *dev, + struct device_attribute *attr, char *buf) { u32 etb_wa, etb_ra, etb_st, etb_fc, etm_ctrl, etm_st; int datalen; @@ -498,21 +496,19 @@ static ssize_t trace_info_show(struct kobject *kobj, ); } -static struct kobj_attribute trace_info_attr = - __ATTR(trace_info, 0444, trace_info_show, NULL); +DEVICE_ATTR(trace_info, S_IRUGO, trace_info_show, NULL); -static ssize_t trace_mode_show(struct kobject *kobj, - struct kobj_attribute *attr, - char *buf) +static ssize_t trace_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) { return sprintf(buf, "%d %d\n", !!(tracer.flags & TRACER_CYCLE_ACC), tracer.etm_portsz); } -static ssize_t trace_mode_store(struct kobject *kobj, - struct kobj_attribute *attr, - const char *buf, size_t n) +static ssize_t trace_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t n) { unsigned int cycacc, portsz; @@ -531,8 +527,7 @@ static ssize_t trace_mode_store(struct kobject *kobj, return n; } -static struct kobj_attribute trace_mode_attr = - __ATTR(trace_mode, 0644, trace_mode_show, trace_mode_store); +DEVICE_ATTR(trace_mode, S_IRUGO|S_IWUSR, trace_mode_show, trace_mode_store); static int etm_probe(struct amba_device *dev, const struct amba_id *id) { @@ -571,17 +566,16 @@ static int etm_probe(struct amba_device *dev, const struct amba_id *id) etm_writel(t, 0x440, ETMR_CTRL); etm_lock(t); - ret = sysfs_create_file(&dev->dev.kobj, - &trace_running_attr.attr); + ret = device_create_file(&dev->dev, &dev_attr_trace_running); if (ret) goto out_unmap; /* failing to create any of these two is not fatal */ - ret = sysfs_create_file(&dev->dev.kobj, &trace_info_attr.attr); + ret = device_create_file(&dev->dev, &dev_attr_trace_info); if (ret) dev_dbg(&dev->dev, "Failed to create trace_info in sysfs\n"); - ret = sysfs_create_file(&dev->dev.kobj, &trace_mode_attr.attr); + ret = device_create_file(&dev->dev, &dev_attr_trace_mode); if (ret) dev_dbg(&dev->dev, "Failed to create trace_mode in sysfs\n"); @@ -611,9 +605,9 @@ static int etm_remove(struct amba_device *dev) amba_release_regions(dev); - sysfs_remove_file(&dev->dev.kobj, &trace_running_attr.attr); - sysfs_remove_file(&dev->dev.kobj, &trace_info_attr.attr); - sysfs_remove_file(&dev->dev.kobj, &trace_mode_attr.attr); + device_remove_file(&dev->dev, &dev_attr_trace_running); + device_remove_file(&dev->dev, &dev_attr_trace_info); + device_remove_file(&dev->dev, &dev_attr_trace_mode); return 0; } -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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