Shiratori, Takehiro edf7b36669 runq_lock: Fix deadlock due to cpu migration. ...

Symptom and analysis:
runq_lock of the migration source is acquired on
the migration destination CPU.

This happens in the following steps:
 (1) The thread stores value of cpu_local_var(runq_lock)
     to its register when trying to perform
     ihk_mc_spinlock_lock() on the lock variable.
 (2) The thread takes IPI and migrates to another CPU.
 (3) The thread resumes execution and acquires the wrong lock.

Solution:
* Disable interrupts before getting the value of
  cpu_local_var(runq_lock)

Change-Id: Ia0ea450b97f872dd6116252537e4a79f85adfc88
Refs: #1400

2020-03-05 01:51:40 +00:00

..

config

arm64: Direct access to Mckernel memory from Linux.

2019-03-06 14:53:16 +09:00

include

perf: update event structure

2020-03-03 13:23:30 +09:00

script

McKernel IHK SMP-x86 support (build system and config files)

2014-12-25 11:03:04 +09:00

ap.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

cls.c

support for backlog

2019-12-05 07:08:13 +00:00

CMakeLists.txt

Fix "arm64: Opt-out NMI for ThunderX2"

2019-12-17 14:48:10 +09:00

copy.c

remove DMA call

2014-03-30 16:14:19 +09:00

debug.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

devobj.c

make checking write-combine arch-dependent

2019-09-23 16:42:26 +09:00

fileobj.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

freeze.c

dump: rewrite NMI handling (for resume) and fix PANIC register saving

2020-02-10 07:45:01 +00:00

futex.c

uti: futex_wait: Use kmalloc area for wait queue

2019-07-23 04:53:51 +00:00

gencore.c

coredump: Support threads

2019-08-09 04:00:15 +00:00

host.c

xpmem: Support large page attachment

2019-12-06 09:30:51 +09:00

hugefileobj.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

init.c

freeze: change freeze-thaw to normal interrupt

2019-09-26 02:13:23 +00:00

listeners.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

llist.c

Linux lockless linked list implementation

2019-04-09 01:52:49 +00:00

Makefile.build.dcfa

fix REQ-31

2016-03-08 15:19:03 +09:00

Makefile.build.dcfa.public

structure format(both user/kernel mode of dcfa and dcfampi enabled)

2013-04-10 17:38:02 +09:00

mem.c

dump: rewrite NMI handling (for resume) and fix PANIC register saving

2020-02-10 07:45:01 +00:00

mikc.c

mcctrl, mexec: fix a bunch of warnings

2017-09-04 08:53:32 +09:00

pager.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

plist.c

futex adaptation from Linux 2.6.34 (Intel MPSS Linux)

2013-05-10 14:23:14 +09:00

process.c

runq_lock: Fix deadlock due to cpu migration.

2020-03-05 01:51:40 +00:00

procfs.c

procfs: if memory_range_lock fails, process later

2019-12-05 07:08:13 +00:00

profile.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

rbtree.c

Expand dump-functions for excluding user/unused memory (This is rebase commit for merging to development)

2017-09-11 15:49:04 +09:00

shmobj.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

syscall.c

runq_lock: Fix deadlock due to cpu migration.

2020-03-05 01:51:40 +00:00

sysfs.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

timer.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00

ubsan.c

cmake: Add ENABLE_UBSAN for -fsanitize=undefined

2019-02-14 16:44:09 +09:00

waitq.c

do_migrate(): signal migrated thread before releasing runq lock

2017-01-30 07:24:09 +09:00

xpmem.c

xpmem: Fix deadlock in xpmem_remove_process_memory_range()

2019-12-06 09:32:51 +09:00

zeroobj.c

debug.h: merge both instances into ihk/debug.h

2019-03-01 05:10:35 +00:00