[lkml]   [2021]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 2/4] coresight: etm4x: Don't use virtual contextID for non-root PID namespace
Hi Leo,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.16-rc5]
[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]

base: 2585cf9dfaaddf00b069673f27bb3f8530e2039c
config: arm64-randconfig-r034-20211213 (
compiler: clang version 14.0.0 ( b6a2ddb6c8ac29412b1361810972e15221fa021c)
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
git remote add linux-review
git fetch --no-tags linux-review Leo-Yan/coresight-etm-Correct-PID-tracing-for-non-root-namespace/20211213-201632
git checkout 3b7eceb25155c98432dea4821c4fc571b44d72e3
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/hwtracing/coresight/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <>

All errors (new ones prefixed by >>):

>> drivers/hwtracing/coresight/coresight-etm4x-sysfs.c:2118:7: error: implicit declaration of function 'task_is_in_init_pid_ns' [-Werror,-Wimplicit-function-declaration]
if (!task_is_in_init_pid_ns(current))
drivers/hwtracing/coresight/coresight-etm4x-sysfs.c:2139:7: error: implicit declaration of function 'task_is_in_init_pid_ns' [-Werror,-Wimplicit-function-declaration]
if (!task_is_in_init_pid_ns(current))
drivers/hwtracing/coresight/coresight-etm4x-sysfs.c:2169:7: error: implicit declaration of function 'task_is_in_init_pid_ns' [-Werror,-Wimplicit-function-declaration]
if (!task_is_in_init_pid_ns(current))
drivers/hwtracing/coresight/coresight-etm4x-sysfs.c:2193:7: error: implicit declaration of function 'task_is_in_init_pid_ns' [-Werror,-Wimplicit-function-declaration]
if (!task_is_in_init_pid_ns(current))
4 errors generated.

vim +/task_is_in_init_pid_ns +2118 drivers/hwtracing/coresight/coresight-etm4x-sysfs.c

2106 static ssize_t vmid_val_show(struct device *dev,
2107 struct device_attribute *attr,
2108 char *buf)
2109 {
2110 unsigned long val;
2111 struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
2112 struct etmv4_config *config = &drvdata->config;
2114 /*
2115 * Don't use virtual contextID tracing if coming from a PID namespace.
2116 * See comment in ctxid_pid_store().
2117 */
> 2118 if (!task_is_in_init_pid_ns(current))
2119 return -EINVAL;
2121 spin_lock(&drvdata->spinlock);
2122 val = (unsigned long)config->vmid_val[config->vmid_idx];
2123 spin_unlock(&drvdata->spinlock);
2124 return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
2125 }

0-DAY CI Kernel Test Service, Intel Corporation

 \ /
  Last update: 2021-12-13 20:49    [W:0.072 / U:1.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site