linux-kernel - Re: [PATCH 1/2] Sched: Scheduler time slice extension

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Message-ID: <202502160310.ZHjm28qH-lkp@intel.com>
Date: Sun, 16 Feb 2025 03:34:49 +0800
From: kernel test robot <lkp@...el.com>
To: Prakash Sangappa <prakash.sangappa@...cle.com>,
	linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	peterz@...radead.org, rostedt@...dmis.org,
	mathieu.desnoyers@...icios.com, tglx@...utronix.de,
	prakash.sangappa@...cle.com
Subject: Re: [PATCH 1/2] Sched: Scheduler time slice extension

Hi Prakash,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on peterz-queue/sched/core linus/master v6.14-rc2 next-20250214]
[cannot apply to tip/core/entry]
[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/Prakash-Sangappa/Sched-Scheduler-time-slice-extension/20250215-090421
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20250215005414.224409-2-prakash.sangappa%40oracle.com
patch subject: [PATCH 1/2] Sched: Scheduler time slice extension
config: hexagon-allnoconfig (https://download.01.org/0day-ci/archive/20250216/202502160310.ZHjm28qH-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 910be4ff90d7d07bd4518ea03b85c0974672bf9c)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250216/202502160310.ZHjm28qH-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/202502160310.ZHjm28qH-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/sched/build_policy.c:66:
>> kernel/sched/syscalls.c:1372:15: error: no member named 'rseq_sched_delay' in 'struct task_struct'
    1372 |         if (current->rseq_sched_delay) {
         |             ~~~~~~~  ^
   1 error generated.


vim +1372 kernel/sched/syscalls.c

  1361	
  1362	/**
  1363	 * sys_sched_yield - yield the current processor to other threads.
  1364	 *
  1365	 * This function yields the current CPU to other tasks. If there are no
  1366	 * other threads running on this CPU then this function will return.
  1367	 *
  1368	 * Return: 0.
  1369	 */
  1370	SYSCALL_DEFINE0(sched_yield)
  1371	{
> 1372		if (current->rseq_sched_delay) {
  1373			schedule();
  1374			return 0;
  1375		}
  1376	
  1377		do_sched_yield();
  1378		return 0;
  1379	}
  1380	

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