lkml.org 
[lkml]   [2017]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2] sched: Introduce new flags to sched_setaffinity to support soft affinity.
Hi Rohit,

[auto build test ERROR on tip/sched/core]
[also build test ERROR on v4.14-rc1 next-20170920]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Rohit-Jain/sched-Introduce-new-flags-to-sched_setaffinity-to-support-soft-affinity/20170921-140313
config: i386-randconfig-x018-201738 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

kernel//trace/trace_hwlat.c: In function 'move_to_next_cpu':
>> kernel//trace/trace_hwlat.c:299:2: error: too few arguments to function 'sched_setaffinity'
sched_setaffinity(0, current_mask);
^~~~~~~~~~~~~~~~~
In file included from include/linux/kthread.h:5:0,
from kernel//trace/trace_hwlat.c:42:
include/linux/sched.h:1636:13: note: declared here
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask,
^~~~~~~~~~~~~~~~~
kernel//trace/trace_hwlat.c: In function 'start_kthread':
kernel//trace/trace_hwlat.c:372:2: error: too few arguments to function 'sched_setaffinity'
sched_setaffinity(kthread->pid, current_mask);
^~~~~~~~~~~~~~~~~
In file included from include/linux/kthread.h:5:0,
from kernel//trace/trace_hwlat.c:42:
include/linux/sched.h:1636:13: note: declared here
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask,
^~~~~~~~~~~~~~~~~

vim +/sched_setaffinity +299 kernel//trace/trace_hwlat.c

0330f7aa Steven Rostedt (Red Hat 2016-07-15 269)
f447c196 Steven Rostedt (VMware 2017-01-31 270) static void move_to_next_cpu(void)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 271) {
f447c196 Steven Rostedt (VMware 2017-01-31 272) struct cpumask *current_mask = &save_cpumask;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 273) int next_cpu;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 274)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 275) if (disable_migrate)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 276) return;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 277) /*
0330f7aa Steven Rostedt (Red Hat 2016-07-15 278) * If for some reason the user modifies the CPU affinity
0330f7aa Steven Rostedt (Red Hat 2016-07-15 279) * of this thread, than stop migrating for the duration
0330f7aa Steven Rostedt (Red Hat 2016-07-15 280) * of the current test.
0330f7aa Steven Rostedt (Red Hat 2016-07-15 281) */
0330f7aa Steven Rostedt (Red Hat 2016-07-15 282) if (!cpumask_equal(current_mask, &current->cpus_allowed))
0330f7aa Steven Rostedt (Red Hat 2016-07-15 283) goto disable;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 284)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 285) get_online_cpus();
0330f7aa Steven Rostedt (Red Hat 2016-07-15 286) cpumask_and(current_mask, cpu_online_mask, tracing_buffer_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 287) next_cpu = cpumask_next(smp_processor_id(), current_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 288) put_online_cpus();
0330f7aa Steven Rostedt (Red Hat 2016-07-15 289)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 290) if (next_cpu >= nr_cpu_ids)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 291) next_cpu = cpumask_first(current_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 292)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 293) if (next_cpu >= nr_cpu_ids) /* Shouldn't happen! */
0330f7aa Steven Rostedt (Red Hat 2016-07-15 294) goto disable;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 295)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 296) cpumask_clear(current_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 297) cpumask_set_cpu(next_cpu, current_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 298)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 @299) sched_setaffinity(0, current_mask);
0330f7aa Steven Rostedt (Red Hat 2016-07-15 300) return;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 301)
0330f7aa Steven Rostedt (Red Hat 2016-07-15 302) disable:
0330f7aa Steven Rostedt (Red Hat 2016-07-15 303) disable_migrate = true;
0330f7aa Steven Rostedt (Red Hat 2016-07-15 304) }
0330f7aa Steven Rostedt (Red Hat 2016-07-15 305)

:::::: The code at line 299 was first introduced by commit
:::::: 0330f7aa8ee63d0c435c0cb4e47ea06235ee4b7f tracing: Have hwlat trace migrate across tracing_cpumask CPUs

:::::: TO: Steven Rostedt (Red Hat) <rostedt@goodmis.org>
:::::: CC: Steven Rostedt <rostedt@goodmis.org>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[unhandled content-type:application/gzip]
\
 
 \ /
  Last update: 2017-09-21 19:28    [W:0.056 / U:6.100 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site