Re: [PATCH v2 5/9] tracing/boot: Show correct histogram error command

[kernel test robot <lkp@intel.com>]

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Hi Masami,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tip/perf/core]
[also build test WARNING on trace/for-next linux/master linus/master v5.14-rc4 next-20210805]
[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]

url:    https://github.com/0day-ci/linux/commits/Masami-Hiramatsu/tracing-boot-Add-histogram-syntax-support-in-boot-time-tracing/20210806-002938
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 79551ec0782895af27d6aa9b3abb6d547b7260d3
config: x86_64-randconfig-r025-20210805 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 42b9c2a17a0b63cccf3ac197a82f91b28e53e643)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/b07ebb734f4e2b68934de501715c1cd98e34ae17
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Masami-Hiramatsu/tracing-boot-Add-histogram-syntax-support-in-boot-time-tracing/20210806-002938
        git checkout b07ebb734f4e2b68934de501715c1cd98e34ae17
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   kernel/trace/trace_boot.c:287:2: error: implicit declaration of function 'xbc_node_for_each_subkey' [-Werror,-Wimplicit-function-declaration]
           xbc_node_for_each_subkey(hnode, node) {
           ^
   kernel/trace/trace_boot.c:287:39: error: expected ';' after expression
           xbc_node_for_each_subkey(hnode, node) {
                                                ^
                                                ;
   kernel/trace/trace_boot.c:290:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   kernel/trace/trace_boot.c:294:4: error: 'break' statement not in loop or switch statement
                           break;
                           ^
   kernel/trace/trace_boot.c:404:2: error: implicit declaration of function 'xbc_node_for_each_subkey' [-Werror,-Wimplicit-function-declaration]
           xbc_node_for_each_subkey(hnode, node) {
           ^
   kernel/trace/trace_boot.c:404:39: error: expected ';' after expression
           xbc_node_for_each_subkey(hnode, node) {
                                                ^
                                                ;
   kernel/trace/trace_boot.c:407:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
>> kernel/trace/trace_boot.c:420:4: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
                           if (trigger_process_regex(file, buf) < 0)
                           ^
   kernel/trace/trace_boot.c:418:3: note: previous statement is here
                   if (trace_boot_compose_hist_cmd(hnode, buf, size) == 0)
                   ^
   1 warning and 7 errors generated.


vim +/if +420 kernel/trace/trace_boot.c

8885ed81dfd529 Masami Hiramatsu 2021-08-06  395  
8885ed81dfd529 Masami Hiramatsu 2021-08-06  396  static void __init
8885ed81dfd529 Masami Hiramatsu 2021-08-06  397  trace_boot_init_histograms(struct trace_event_file *file,
8885ed81dfd529 Masami Hiramatsu 2021-08-06  398  			   struct xbc_node *hnode, char *buf, size_t size)
8885ed81dfd529 Masami Hiramatsu 2021-08-06  399  {
8885ed81dfd529 Masami Hiramatsu 2021-08-06  400  	struct xbc_node *node;
8885ed81dfd529 Masami Hiramatsu 2021-08-06  401  	const char *p;
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  402  	char *tmp;
8885ed81dfd529 Masami Hiramatsu 2021-08-06  403  
8885ed81dfd529 Masami Hiramatsu 2021-08-06 @404  	xbc_node_for_each_subkey(hnode, node) {
8885ed81dfd529 Masami Hiramatsu 2021-08-06  405  		p = xbc_node_get_data(node);
8885ed81dfd529 Masami Hiramatsu 2021-08-06  406  		if (!isdigit(p[0]))
8885ed81dfd529 Masami Hiramatsu 2021-08-06  407  			continue;
8885ed81dfd529 Masami Hiramatsu 2021-08-06  408  		/* All digit started node should be instances. */
8885ed81dfd529 Masami Hiramatsu 2021-08-06  409  		if (trace_boot_compose_hist_cmd(node, buf, size) == 0) {
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  410  			tmp = kstrdup(buf, GFP_KERNEL);
8885ed81dfd529 Masami Hiramatsu 2021-08-06  411  			if (trigger_process_regex(file, buf) < 0)
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  412  				pr_err("Failed to apply hist trigger: %s\n", tmp);
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  413  			kfree(tmp);
8885ed81dfd529 Masami Hiramatsu 2021-08-06  414  		}
8885ed81dfd529 Masami Hiramatsu 2021-08-06  415  	}
8885ed81dfd529 Masami Hiramatsu 2021-08-06  416  
8885ed81dfd529 Masami Hiramatsu 2021-08-06  417  	if (xbc_node_find_child(hnode, "keys")) {
8885ed81dfd529 Masami Hiramatsu 2021-08-06  418  		if (trace_boot_compose_hist_cmd(hnode, buf, size) == 0)
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  419  			tmp = kstrdup(buf, GFP_KERNEL);
8885ed81dfd529 Masami Hiramatsu 2021-08-06 @420  			if (trigger_process_regex(file, buf) < 0)
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  421  				pr_err("Failed to apply hist trigger: %s\n", tmp);
b07ebb734f4e2b Masami Hiramatsu 2021-08-06  422  			kfree(tmp);
8885ed81dfd529 Masami Hiramatsu 2021-08-06  423  	}
8885ed81dfd529 Masami Hiramatsu 2021-08-06  424  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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