[PATCH v2 1/3] drivers/perf: convert sysfs snprintf family to sysfs_emit

From: Qi Liu
Date: Fri Mar 19 2021 - 06:08:16 EST

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From: Zihao Tang <tangzihao1@xxxxxxxxxxxxx>

Fix the following coccicheck warning:

./drivers/perf/hisilicon/hisi_uncore_pmu.c:128:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/fsl_imx8_ddr_perf.c:173:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm_spe_pmu.c:129:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm_smmu_pmu.c:563:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm_dsu_pmu.c:149:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm_dsu_pmu.c:139:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cmn.c:563:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cmn.c:351:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-ccn.c:224:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cci.c:708:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cci.c:699:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cci.c:528:8-16: WARNING: use scnprintf or sprintf.
./drivers/perf/arm-cci.c:309:8-16: WARNING: use scnprintf or sprintf.

Signed-off-by: Zihao Tang <tangzihao1@xxxxxxxxxxxxx>
Signed-off-by: Qi Liu <liuqi115@xxxxxxxxxx>
---
drivers/perf/arm-cci.c | 12 ++++++------
drivers/perf/arm-ccn.c | 4 ++--
drivers/perf/arm-cmn.c | 22 +++++++++++-----------
drivers/perf/arm_dsu_pmu.c | 5 ++---
drivers/perf/arm_smmuv3_pmu.c | 2 +-
drivers/perf/arm_spe_pmu.c | 3 +--
drivers/perf/fsl_imx8_ddr_perf.c | 3 +--
drivers/perf/hisilicon/hisi_uncore_pmu.c | 2 +-
8 files changed, 25 insertions(+), 28 deletions(-)

diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
index f81e2ec..666d8a9 100644
--- a/drivers/perf/arm-cci.c
+++ b/drivers/perf/arm-cci.c
@@ -306,7 +306,7 @@ static ssize_t cci400_pmu_cycle_event_show(struct device *dev,
{
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
- return snprintf(buf, PAGE_SIZE, "config=0x%lx\n", (unsigned long)eattr->var);
+ return sysfs_emit(buf, "config=0x%lx\n", (unsigned long)eattr->var);
}

static int cci400_get_event_idx(struct cci_pmu *cci_pmu,
@@ -525,8 +525,8 @@ static ssize_t cci5xx_pmu_global_event_show(struct device *dev,
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
/* Global events have single fixed source code */
- return snprintf(buf, PAGE_SIZE, "event=0x%lx,source=0x%x\n",
- (unsigned long)eattr->var, CCI5xx_PORT_GLOBAL);
+ return sysfs_emit(buf, "event=0x%lx,source=0x%x\n",
+ (unsigned long)eattr->var, CCI5xx_PORT_GLOBAL);
}

/*
@@ -696,7 +696,7 @@ static ssize_t cci_pmu_format_show(struct device *dev,
{
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
- return snprintf(buf, PAGE_SIZE, "%s\n", (char *)eattr->var);
+ return sysfs_emit(buf, "%s\n", (char *)eattr->var);
}

static ssize_t cci_pmu_event_show(struct device *dev,
@@ -705,8 +705,8 @@ static ssize_t cci_pmu_event_show(struct device *dev,
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
/* source parameter is mandatory for normal PMU events */
- return snprintf(buf, PAGE_SIZE, "source=?,event=0x%lx\n",
- (unsigned long)eattr->var);
+ return sysfs_emit(buf, "source=?,event=0x%lx\n",
+ (unsigned long)eattr->var);
}

static int pmu_is_valid_counter(struct cci_pmu *cci_pmu, int idx)
diff --git a/drivers/perf/arm-ccn.c b/drivers/perf/arm-ccn.c
index a0a71c1..3a2ddc0 100644
--- a/drivers/perf/arm-ccn.c
+++ b/drivers/perf/arm-ccn.c
@@ -221,7 +221,7 @@ static ssize_t arm_ccn_pmu_format_show(struct device *dev,
struct dev_ext_attribute *ea = container_of(attr,
struct dev_ext_attribute, attr);

- return snprintf(buf, PAGE_SIZE, "%s\n", (char *)ea->var);
+ return sysfs_emit(buf, "%s\n", (char *)ea->var);
}

#define CCN_FORMAT_ATTR(_name, _config) \
@@ -476,7 +476,7 @@ static ssize_t arm_ccn_pmu_cmp_mask_show(struct device *dev,
struct arm_ccn *ccn = pmu_to_arm_ccn(dev_get_drvdata(dev));
u64 *mask = arm_ccn_pmu_get_cmp_mask(ccn, attr->attr.name);

- return mask ? snprintf(buf, PAGE_SIZE, "0x%016llx\n", *mask) : -EINVAL;
+ return mask ? sysfs_emit(buf, "0x%016llx\n", *mask) : -EINVAL;
}

static ssize_t arm_ccn_pmu_cmp_mask_store(struct device *dev,
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 1328159f..56a5c35 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -348,19 +348,19 @@ static ssize_t arm_cmn_event_show(struct device *dev,
eattr = container_of(attr, typeof(*eattr), attr);

if (eattr->type == CMN_TYPE_DTC)
- return snprintf(buf, PAGE_SIZE, "type=0x%x\n", eattr->type);
+ return sysfs_emit(buf, "type=0x%x\n", eattr->type);

if (eattr->type == CMN_TYPE_WP)
- return snprintf(buf, PAGE_SIZE,
- "type=0x%x,eventid=0x%x,wp_dev_sel=?,wp_chn_sel=?,wp_grp=?,wp_val=?,wp_mask=?\n",
- eattr->type, eattr->eventid);
+ return sysfs_emit(buf,
+ "type=0x%x,eventid=0x%x,wp_dev_sel=?,wp_chn_sel=?,wp_grp=?,wp_val=?,wp_mask=?\n",
+ eattr->type, eattr->eventid);

if (arm_cmn_is_occup_event(eattr->type, eattr->eventid))
- return snprintf(buf, PAGE_SIZE, "type=0x%x,eventid=0x%x,occupid=0x%x\n",
- eattr->type, eattr->eventid, eattr->occupid);
+ return sysfs_emit(buf, "type=0x%x,eventid=0x%x,occupid=0x%x\n",
+ eattr->type, eattr->eventid, eattr->occupid);

- return snprintf(buf, PAGE_SIZE, "type=0x%x,eventid=0x%x\n",
- eattr->type, eattr->eventid);
+ return sysfs_emit(buf, "type=0x%x,eventid=0x%x\n", eattr->type,
+ eattr->eventid);
}

static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
@@ -560,12 +560,12 @@ static ssize_t arm_cmn_format_show(struct device *dev,
int lo = __ffs(fmt->field), hi = __fls(fmt->field);

if (lo == hi)
- return snprintf(buf, PAGE_SIZE, "config:%d\n", lo);
+ return sysfs_emit(buf, "config:%d\n", lo);

if (!fmt->config)
- return snprintf(buf, PAGE_SIZE, "config:%d-%d\n", lo, hi);
+ return sysfs_emit(buf, "config:%d-%d\n", lo, hi);

- return snprintf(buf, PAGE_SIZE, "config%d:%d-%d\n", fmt->config, lo, hi);
+ return sysfs_emit(buf, "config%d:%d-%d\n", fmt->config, lo, hi);
}

#define _CMN_FORMAT_ATTR(_name, _cfg, _fld) \
diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index 0459a34..196faea 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -136,8 +136,7 @@ static ssize_t dsu_pmu_sysfs_event_show(struct device *dev,
{
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
- return snprintf(buf, PAGE_SIZE, "event=0x%lx\n",
- (unsigned long)eattr->var);
+ return sysfs_emit(buf, "event=0x%lx\n", (unsigned long)eattr->var);
}

static ssize_t dsu_pmu_sysfs_format_show(struct device *dev,
@@ -146,7 +145,7 @@ static ssize_t dsu_pmu_sysfs_format_show(struct device *dev,
{
struct dev_ext_attribute *eattr = container_of(attr,
struct dev_ext_attribute, attr);
- return snprintf(buf, PAGE_SIZE, "%s\n", (char *)eattr->var);
+ return sysfs_emit(buf, "%s\n", (char *)eattr->var);
}

static ssize_t dsu_pmu_cpumask_show(struct device *dev,
diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index 8ff7a67..fa9dfbc 100644
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -560,7 +560,7 @@ static ssize_t smmu_pmu_identifier_attr_show(struct device *dev,
{
struct smmu_pmu *smmu_pmu = to_smmu_pmu(dev_get_drvdata(dev));

- return snprintf(page, PAGE_SIZE, "0x%08x\n", smmu_pmu->iidr);
+ return sysfs_emit(page, "0x%08x\n", smmu_pmu->iidr);
}

static umode_t smmu_pmu_identifier_attr_visible(struct kobject *kobj,
diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
index d3929cc..8a1e86a 100644
--- a/drivers/perf/arm_spe_pmu.c
+++ b/drivers/perf/arm_spe_pmu.c
@@ -126,8 +126,7 @@ static ssize_t arm_spe_pmu_cap_show(struct device *dev,
container_of(attr, struct dev_ext_attribute, attr);
int cap = (long)ea->var;

- return snprintf(buf, PAGE_SIZE, "%u\n",
- arm_spe_pmu_cap_get(spe_pmu, cap));
+ return sysfs_emit(buf, "%u\n", arm_spe_pmu_cap_get(spe_pmu, cap));
}

#define SPE_EXT_ATTR_ENTRY(_name, _func, _var) \
diff --git a/drivers/perf/fsl_imx8_ddr_perf.c b/drivers/perf/fsl_imx8_ddr_perf.c
index be1f26b..c126fd8 100644
--- a/drivers/perf/fsl_imx8_ddr_perf.c
+++ b/drivers/perf/fsl_imx8_ddr_perf.c
@@ -170,8 +170,7 @@ static ssize_t ddr_perf_filter_cap_show(struct device *dev,
container_of(attr, struct dev_ext_attribute, attr);
int cap = (long)ea->var;

- return snprintf(buf, PAGE_SIZE, "%u\n",
- ddr_perf_filter_cap_get(pmu, cap));
+ return sysfs_emit(buf, "%u\n", ddr_perf_filter_cap_get(pmu, cap));
}

#define PERF_EXT_ATTR_ENTRY(_name, _func, _var) \
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index 9dbdc3f..64ccf5e 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -125,7 +125,7 @@ ssize_t hisi_uncore_pmu_identifier_attr_show(struct device *dev,
{
struct hisi_pmu *hisi_pmu = to_hisi_pmu(dev_get_drvdata(dev));

- return snprintf(page, PAGE_SIZE, "0x%08x\n", hisi_pmu->identifier);
+ return sysfs_emit(page, "0x%08x\n", hisi_pmu->identifier);
}
EXPORT_SYMBOL_GPL(hisi_uncore_pmu_identifier_attr_show);

--
2.8.1

Next message: quanyang . wang: "[PATCH 1/2] clk: zynqmp: pll: add set_pll_mode to check condition in zynqmp_pll_enable"
Previous message: Qi Liu: "[PATCH v2 2/3] drivers/perf: convert sysfs scnprintf family to sysfs_emit_at() and sysfs_emit()"
In reply to: Qi Liu: "[PATCH v2 2/3] drivers/perf: convert sysfs scnprintf family to sysfs_emit_at() and sysfs_emit()"
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