linux-kernel - kernel/trace/ftrace.c:5675: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter

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Date:   Tue, 10 Oct 2023 08:41:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        "Steven Rostedt (Google)" <rostedt@...dmis.org>
Subject: kernel/trace/ftrace.c:5675: warning: Function parameter or member
 'ops' not described in 'ftrace_set_filter_ips'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   94f6f0550c625fab1f373bb86a6669b45e9748b3
commit: 4f554e955614f19425cee86de4669351741a6280 ftrace: Add ftrace_set_filter_ips function
date:   1 year, 7 months ago
config: i386-debian-10.3 (https://download.01.org/0day-ci/archive/20231010/202310100857.YpF7BNZH-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231010/202310100857.YpF7BNZH-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310100857.YpF7BNZH-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/trace/ftrace.c:5553: warning: Function parameter or member 'addr' not described in 'unregister_ftrace_direct_multi'
   kernel/trace/ftrace.c:5656: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5656: warning: Function parameter or member 'ip' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5656: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5656: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ip'
>> kernel/trace/ftrace.c:5675: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ips'
>> kernel/trace/ftrace.c:5675: warning: Function parameter or member 'ips' not described in 'ftrace_set_filter_ips'
>> kernel/trace/ftrace.c:5675: warning: Function parameter or member 'cnt' not described in 'ftrace_set_filter_ips'
>> kernel/trace/ftrace.c:5675: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ips'
>> kernel/trace/ftrace.c:5675: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ips'
   kernel/trace/ftrace.c:5689: warning: Function parameter or member 'ops' not described in 'ftrace_ops_set_global_filter'
   kernel/trace/ftrace.c:5717: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5717: warning: Function parameter or member 'buf' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5717: warning: Function parameter or member 'len' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5717: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5736: warning: Function parameter or member 'ops' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5736: warning: Function parameter or member 'buf' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5736: warning: Function parameter or member 'len' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5736: warning: Function parameter or member 'reset' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5751: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5751: warning: Function parameter or member 'len' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5751: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5767: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5767: warning: Function parameter or member 'len' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5767: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:7843: warning: Function parameter or member 'ops' not described in 'register_ftrace_function'
   kernel/trace/ftrace.c:7865: warning: Function parameter or member 'ops' not described in 'unregister_ftrace_function'


vim +5675 kernel/trace/ftrace.c

  5661	
  5662	/**
  5663	 * ftrace_set_filter_ips - set functions to filter on in ftrace by addresses
  5664	 * @ops - the ops to set the filter with
  5665	 * @ips - the array of addresses to add to or remove from the filter.
  5666	 * @cnt - the number of addresses in @ips
  5667	 * @remove - non zero to remove ips from the filter
  5668	 * @reset - non zero to reset all filters before applying this filter.
  5669	 *
  5670	 * Filters denote which functions should be enabled when tracing is enabled
  5671	 * If @ips array or any ip specified within is NULL , it fails to update filter.
  5672	 */
  5673	int ftrace_set_filter_ips(struct ftrace_ops *ops, unsigned long *ips,
  5674				  unsigned int cnt, int remove, int reset)
> 5675	{
  5676		ftrace_ops_init(ops);
  5677		return ftrace_set_addr(ops, ips, cnt, remove, reset, 1);
  5678	}
  5679	EXPORT_SYMBOL_GPL(ftrace_set_filter_ips);
  5680	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki