https://github.com/torvalds/linux
Revision 46dc111dfe47bf47f23884cade3c8a355be87c8c authored by Linus Torvalds on 27 April 2018, 23:13:31 UTC, committed by Linus Torvalds on 27 April 2018, 23:13:31 UTC
Pull KVM fixes from Radim Krčmář: "ARM: - PSCI selection API, a leftover from 4.16 (for stable) - Kick vcpu on active interrupt affinity change - Plug a VMID allocation race on oversubscribed systems - Silence debug messages - Update Christoffer's email address (linaro -> arm) x86: - Expose userspace-relevant bits of a newly added feature - Fix TLB flushing on VMX with VPID, but without EPT" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI kvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use arm/arm64: KVM: Add PSCI version selection API KVM: arm/arm64: vgic: Kick new VCPU on interrupt migration arm64: KVM: Demote SVE and LORegion warnings to debug only MAINTAINERS: Update e-mail address for Christoffer Dall KVM: arm/arm64: Close VMID generation race
Tip revision: 46dc111dfe47bf47f23884cade3c8a355be87c8c authored by Linus Torvalds on 27 April 2018, 23:13:31 UTC
rMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
rMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Tip revision: 46dc111
backtracetest.c
/*
* Simple stack backtrace regression test module
*
* (C) Copyright 2008 Intel Corporation
* Author: Arjan van de Ven <arjan@linux.intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*/
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/stacktrace.h>
static void backtrace_test_normal(void)
{
pr_info("Testing a backtrace from process context.\n");
pr_info("The following trace is a kernel self test and not a bug!\n");
dump_stack();
}
static DECLARE_COMPLETION(backtrace_work);
static void backtrace_test_irq_callback(unsigned long data)
{
dump_stack();
complete(&backtrace_work);
}
static DECLARE_TASKLET(backtrace_tasklet, &backtrace_test_irq_callback, 0);
static void backtrace_test_irq(void)
{
pr_info("Testing a backtrace from irq context.\n");
pr_info("The following trace is a kernel self test and not a bug!\n");
init_completion(&backtrace_work);
tasklet_schedule(&backtrace_tasklet);
wait_for_completion(&backtrace_work);
}
#ifdef CONFIG_STACKTRACE
static void backtrace_test_saved(void)
{
struct stack_trace trace;
unsigned long entries[8];
pr_info("Testing a saved backtrace.\n");
pr_info("The following trace is a kernel self test and not a bug!\n");
trace.nr_entries = 0;
trace.max_entries = ARRAY_SIZE(entries);
trace.entries = entries;
trace.skip = 0;
save_stack_trace(&trace);
print_stack_trace(&trace, 0);
}
#else
static void backtrace_test_saved(void)
{
pr_info("Saved backtrace test skipped.\n");
}
#endif
static int backtrace_regression_test(void)
{
pr_info("====[ backtrace testing ]===========\n");
backtrace_test_normal();
backtrace_test_irq();
backtrace_test_saved();
pr_info("====[ end of backtrace testing ]====\n");
return 0;
}
static void exitf(void)
{
}
module_init(backtrace_regression_test);
module_exit(exitf);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arjan van de Ven <arjan@linux.intel.com>");
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