Hi Jing,
kernel test robot noticed the following build warnings:
[auto build test WARNING on tip/perf/core]
[also build test WARNING on acme/perf/core arm-perf/for-next/perf linus/master v6.4-rc4 next-20230530]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Jing-Zhang/driver-perf-Add-identifier-sysfs-file-for-CMN/20230530-172139
base: tip/perf/core
patch link: https://lore.kernel.org/r/1685438374-33287-2-git-send-email-renyu.zj%40linux.alibaba.com
patch subject: [PATCH v3 1/7] driver/perf: Add identifier sysfs file for CMN
config: hexagon-buildonly-randconfig-r006-20230530 (https://download.01.org/0day-ci/archive/20230531/202305311005.YR2SisSe-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/c7483d062f1b91e98b028fa720b8a98b94ec9bc5
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jing-Zhang/driver-perf-Add-identifier-sysfs-file-for-CMN/20230530-172139
git checkout c7483d062f1b91e98b028fa720b8a98b94ec9bc5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/perf/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305311005.YR2SisSe-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/perf/arm-cmn.c:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/perf/arm-cmn.c:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/perf/arm-cmn.c:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
>> drivers/perf/arm-cmn.c:2379:41: warning: unused variable 'arm_cmn600_data' [-Wunused-const-variable]
static const struct arm_cmn_device_data arm_cmn600_data = {
^
>> drivers/perf/arm-cmn.c:2384:41: warning: unused variable 'arm_cmn650_data' [-Wunused-const-variable]
static const struct arm_cmn_device_data arm_cmn650_data = {
^
>> drivers/perf/arm-cmn.c:2389:41: warning: unused variable 'arm_cmn700_data' [-Wunused-const-variable]
static const struct arm_cmn_device_data arm_cmn700_data = {
^
>> drivers/perf/arm-cmn.c:2394:41: warning: unused variable 'arm_ci700_data' [-Wunused-const-variable]
static const struct arm_cmn_device_data arm_ci700_data = {
^
10 warnings generated.
vim +/arm_cmn600_data +2379 drivers/perf/arm-cmn.c
2378
> 2379 static const struct arm_cmn_device_data arm_cmn600_data = {
2380 .model_name = "arm_cmn600",
2381 .model = CMN600
2382 };
2383
> 2384 static const struct arm_cmn_device_data arm_cmn650_data = {
2385 .model_name = "arm_cmn650",
2386 .model = CMN650
2387 };
2388
> 2389 static const struct arm_cmn_device_data arm_cmn700_data = {
2390 .model_name = "arm_cmn700",
2391 .model = CMN700
2392 };
2393
> 2394 static const struct arm_cmn_device_data arm_ci700_data = {
2395 .model_name = "arm_ci700",
2396 .model = CI700
2397 };
2398
@@ -334,6 +334,7 @@ struct arm_cmn {
struct pmu pmu;
struct dentry *debug;
+ const char *identifier;
};
#define to_cmn(p) container_of(p, struct arm_cmn, pmu)
@@ -347,6 +348,11 @@ struct arm_cmn_nodeid {
u8 dev;
};
+struct arm_cmn_device_data {
+ const char * model_name;
+ enum cmn_model model;
+};
+
static int arm_cmn_xyidbits(const struct arm_cmn *cmn)
{
return fls((cmn->mesh_x - 1) | (cmn->mesh_y - 1) | 2);
@@ -1168,10 +1174,43 @@ static ssize_t arm_cmn_cpumask_show(struct device *dev,
.attrs = arm_cmn_cpumask_attrs,
};
+static ssize_t arm_cmn_identifier_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
+
+ return sysfs_emit(buf, "%s\n", cmn->identifier);
+}
+
+static umode_t arm_cmn_identifier_attr_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
+
+ if (cmn->identifier == NULL)
+ return 0;
+ return attr->mode;
+}
+
+static struct device_attribute arm_cmn_identifier_attr =
+ __ATTR(identifier, 0444, arm_cmn_identifier_show, NULL);
+
+static struct attribute *arm_cmn_identifier_attrs[] = {
+ &arm_cmn_identifier_attr.attr,
+ NULL
+};
+
+static struct attribute_group arm_cmn_identifier_attr_group = {
+ .attrs = arm_cmn_identifier_attrs,
+ .is_visible = arm_cmn_identifier_attr_visible
+};
+
static const struct attribute_group *arm_cmn_attr_groups[] = {
&arm_cmn_event_attrs_group,
&arm_cmn_format_attrs_group,
&arm_cmn_cpumask_attr_group,
+ &arm_cmn_identifier_attr_group,
NULL
};
@@ -2247,13 +2286,15 @@ static int arm_cmn_probe(struct platform_device *pdev)
const char *name;
static atomic_t id;
int err, rootnode, this_id;
+ const struct arm_cmn_device_data * dev_data;
cmn = devm_kzalloc(&pdev->dev, sizeof(*cmn), GFP_KERNEL);
if (!cmn)
return -ENOMEM;
cmn->dev = &pdev->dev;
- cmn->model = (unsigned long)device_get_match_data(cmn->dev);
+ dev_data = (const struct arm_cmn_device_data *)device_get_match_data(cmn->dev);
+ cmn->model = dev_data->model;
platform_set_drvdata(pdev, cmn);
if (cmn->model == CMN600 && has_acpi_companion(cmn->dev)) {
@@ -2281,6 +2322,8 @@ static int arm_cmn_probe(struct platform_device *pdev)
if (err)
return err;
+ cmn->identifier = devm_kasprintf(
+ cmn->dev, GFP_KERNEL, "%s_%d", dev_data->model_name, cmn->rev);
cmn->cpu = cpumask_local_spread(0, dev_to_node(cmn->dev));
cmn->pmu = (struct pmu) {
.module = THIS_MODULE,
@@ -2330,12 +2373,32 @@ static int arm_cmn_remove(struct platform_device *pdev)
return 0;
}
+static const struct arm_cmn_device_data arm_cmn600_data = {
+ .model_name = "arm_cmn600",
+ .model = CMN600
+};
+
+static const struct arm_cmn_device_data arm_cmn650_data = {
+ .model_name = "arm_cmn650",
+ .model = CMN650
+};
+
+static const struct arm_cmn_device_data arm_cmn700_data = {
+ .model_name = "arm_cmn700",
+ .model = CMN700
+};
+
+static const struct arm_cmn_device_data arm_ci700_data = {
+ .model_name = "arm_ci700",
+ .model = CI700
+};
+
#ifdef CONFIG_OF
static const struct of_device_id arm_cmn_of_match[] = {
- { .compatible = "arm,cmn-600", .data = (void *)CMN600 },
- { .compatible = "arm,cmn-650", .data = (void *)CMN650 },
- { .compatible = "arm,cmn-700", .data = (void *)CMN700 },
- { .compatible = "arm,ci-700", .data = (void *)CI700 },
+ { .compatible = "arm,cmn-600", .data = (void *)&arm_cmn600_data },
+ { .compatible = "arm,cmn-650", .data = (void *)&arm_cmn650_data },
+ { .compatible = "arm,cmn-700", .data = (void *)&arm_cmn700_data },
+ { .compatible = "arm,ci-700", .data = (void *)&arm_ci700_data },
{}
};
MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
@@ -2343,9 +2406,9 @@ static int arm_cmn_remove(struct platform_device *pdev)
#ifdef CONFIG_ACPI
static const struct acpi_device_id arm_cmn_acpi_match[] = {
- { "ARMHC600", CMN600 },
- { "ARMHC650", CMN650 },
- { "ARMHC700", CMN700 },
+ { "ARMHC600", (kernel_ulong_t)&arm_cmn600_data },
+ { "ARMHC650", (kernel_ulong_t)&arm_cmn650_data },
+ { "ARMHC700", (kernel_ulong_t)&arm_cmn700_data },
{}
};
MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);