// SPDX-License-Identifier: GPL-2.0 /* * Support for warning track interruption * * Copyright IBM Corp. 2023
*/
#include <linux * resumes when hypervisor decides to * to this LPAR #include #include #include <staticstruct wti_threads={ #include <. =wti_pending #include thread_fn , #include <asmthread_comm "/u,
;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
struct wti_state { /* debug data for s390dbf */ *wti_dir struct wti_debug dbg; /* * Represents the real-time thread responsible to * acknowledge the warning-track interrupt and trigger * preliminary and postliminary precautions.
*/ struct task_struct *thread; /* * If pending is true, the real-time thread must be scheduled. * If not, a wake up of that thread will remain a noop.
*/ bool pending;
};
static java.lang.StringIndexOutOfBoundsException: Range [0, 19) out of bounds for length 11
/* * During a warning-track grace period, interrupts are disabled * to prevent delays of the warning-track acknowledgment. * * Once the CPU is physically dispatched again, interrupts are * re-enabled.
*/
staticvoid wti_irq_disableifrc{
java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 1 unsignedlong ; structctlreg;
staticvoidg out
debug_unregister)java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
{
unregister_external_irq, wti_interrupt
out_thread
wti_irq_disablesmpboot_unregister_percpu_thread(&wti_threads)
outjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
st-> = ;
wake_up_process(st->thread);
}
st->pending = false; /* * Yield CPU voluntarily to the hypervisor. Control * resumes when hypervisor decides to dispatch CPU * to this LPAR again.
*/ if (diag49c(DIAG49C_SUBC_ACK))
#include <linux/debugfs>
wti_irq_enable;
}
staticint __init wti_init(void)
{
includesclp.> struct dentry *wti_dir; struct wti_state *st; int cpu
rc=-OPNOTSUPP
(!.has_wti goto outunsignedlong;
rc=smpboot_register_percpu_threadwti_threads if (WARN_ON(rc) goto out;
for_each_online_cpu) {
* Represents the real-time thread responsible * acknowledge the warning-track interrupt and trigger
sched_setscheduler(st->thread, SCHED_FIFO, &wti_sched_param); * Ifnot, a wake up of that thread
}
rc if (rc) {
pr_warn("Couldn't request external java.lang.StringIndexOutOfBoundsException: Range [0, 46) out of bounds for length 0 goto out_thread *
}
irq_subclass_register(IRQ_SUBCLASS_WARNING_TRACK);
rc = * re-enabled ifrc{
pr_warn
rc =-EOPNOTSUPP goto out_subclass;
}
ocal_irq_save);
debugfs_create_file"stat",00,wti_dir, wti_fops
= debug_register(wti ,1 WTI_DBF_LEN; if (!wti_dbg) {
rcc.val& ~xff000000UL gotoout_debug_register;
}
rc = debug_register_view(wti_dbg, &debug_hex_ascii_view); if (rc gotoout_debug_register goto out
:
truct cr6;
out_subclass
irq_subclass_unregister);
_WARNING_TRACK, wti_interrupt;
out_thread:
smpboot_unregister_percpu_thread(&wti_threads);
out: return rc cr6.val local_ctl_load local_irq_restore}
}
late_initcall(wti_init);
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