On Sun, 2013-12-22 at 06:10 +0100, Mike Galbraith wrote: > DL980 with same rt7 patchset/config, but with nohz_full=55-63 can take a > while to make up its mind, but does kick in (this boot anyway). While rebuilding with distro config (lard=max, but nohz_full=off)... [ 2230.960596] ------------[ cut here ]------------ [ 2231.008947] WARNING: CPU: 24 PID: 372 at kernel/time/tick-sched.c:161 can_stop_full_tick+0x1b3/0x1c0() [ 2231.136916] Modules linked in: nfsv3 nfs_acl nfs fscache lockd sunrpc autofs4 edd af_packet bridge stp llc cpufreq_conservative cpufreq_userspace cpufreq_powersave pcc_cpufreq fuse loop ipmi_si iTCO_wdt iTCO_vendor_support gpio_ich sg sr_mod cdrom joydev ipmi_msghandler netxen_nic bnx2 i7core_edac lpc_ich mfd_core edac_core acpi_power_meter pcspkr button ext3 jbd radeon ttm drm_kms_helper drm i2c_algo_bit thermal processor thermal_sys scsi_dh_rdac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh ata_generic ata_piix hpsa cciss [ 2231.633825] CPU: 24 PID: 372 Comm: ksoftirqd/24 Not tainted 3.12.6-rt7 #189 [ 2231.633827] Hardware name: Hewlett-Packard ProLiant DL980 G7, BIOS P66 07/07/2010 [ 2231.633831] 00000000ffffffff ffff88027459bbf8 ffffffff81573a2d ffffffff810b8583 [ 2231.633833] 00000000000000a1 ffff88027459bc38 ffffffff8104fe1c ffff88027459bc28 [ 2231.633834] ffff88027710be40 ffff880277100000 0000000000000002 0000000000000000 [ 2231.633835] Call Trace: [ 2231.633854] [<ffffffff81573a2d>] dump_stack+0x4d/0xa8 [ 2231.633863] [<ffffffff810b8583>] ? can_stop_full_tick+0x1b3/0x1c0 [ 2231.633872] [<ffffffff8104fe1c>] warn_slowpath_common+0x8c/0xc0 [ 2231.633928] [<ffffffff8104fe6a>] warn_slowpath_null+0x1a/0x20 [ 2231.633929] [<ffffffff810b8583>] can_stop_full_tick+0x1b3/0x1c0 [ 2231.633931] [<ffffffff810b8625>] __tick_nohz_full_check+0x95/0xb0 [ 2231.633933] [<ffffffff810b864e>] nohz_full_kick_work_func+0xe/0x10 [ 2231.633941] [<ffffffff8110a0a9>] __irq_work_run+0x69/0x80 [ 2231.633943] [<ffffffff8110a0c9>] irq_work_run+0x9/0x10 [ 2231.633946] [<ffffffff8105e1f4>] run_timer_softirq+0x24/0x2d0 [ 2231.633955] [<ffffffff8108a2a5>] ? sched_clock_cpu+0xc5/0x110 [ 2231.633958] [<ffffffff8108afc5>] ? account_system_time+0x175/0x1a0 [ 2231.633964] [<ffffffff810560c6>] handle_softirq+0xa6/0x180 [ 2231.633966] [<ffffffff810562f8>] do_current_softirqs+0x158/0x230 [ 2231.633968] [<ffffffff81056403>] run_ksoftirqd+0x33/0x50 [ 2231.633971] [<ffffffff8107ee82>] smpboot_thread_fn+0x232/0x360 [ 2231.633973] [<ffffffff8107ec50>] ? smpboot_create_threads+0x80/0x80 [ 2231.633977] [<ffffffff8107571e>] kthread+0xbe/0xd0 [ 2231.633978] [<ffffffff81075660>] ? kthreadd+0x1d0/0x1d0 [ 2231.633988] [<ffffffff8157fb2c>] ret_from_fork+0x7c/0xb0 [ 2231.633990] [<ffffffff81075660>] ? kthreadd+0x1d0/0x1d0 [ 2231.633992] ---[ end trace 0000000000000002 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
