qemu-e2k/util
David Hildenbrand 7730f32c28 util: Introduce qemu_thread_set_affinity() and qemu_thread_get_affinity()
Usually, we let upper layers handle CPU pinning, because
pthread_setaffinity_np() (-> sched_setaffinity()) is blocked via
seccomp when starting QEMU with
    -sandbox enable=on,resourcecontrol=deny

However, we want to configure and observe the CPU affinity of threads
from QEMU directly in some cases when the sandbox option is either not
enabled or not active yet.

So let's add a way to configure CPU pinning via
qemu_thread_set_affinity() and obtain CPU affinity via
qemu_thread_get_affinity() and implement them under POSIX using
pthread_setaffinity_np() + pthread_getaffinity_np().

Implementation under Windows is possible using SetProcessAffinityMask()
+ GetProcessAffinityMask(), however, that is left as future work.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <20221014134720.168738-3-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
2022-10-27 11:00:36 +02:00
..
aio-posix.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
aio-posix.h aio-posix: fix spurious ->poll_ready() callbacks in main loop 2022-03-17 11:23:18 +00:00
aio-wait.c aio_wait_kick: add missing memory barrier 2022-06-24 17:07:06 +02:00
aio-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
aiocb.c
async.c replay: notify vCPU when BH is scheduled 2022-06-06 09:26:53 +02:00
atomic64.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
base64.c
bitmap.c Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
bitops.c
block-helpers.c
block-helpers.h
buffer.c
bufferiszero.c cpuid: use unsigned for max cpuid 2022-02-04 09:07:43 -05:00
cacheflush.c util/cacheflush: Optimize flushing when ppc host has coherent icache 2022-06-21 09:28:41 -07:00
compatfd.c util: replace pipe()+cloexec with g_unix_open_pipe() 2022-05-03 15:18:14 +04:00
coroutine-sigaltstack.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
coroutine-ucontext.c coroutine-ucontext: use QEMU_DEFINE_STATIC_CO_TLS() 2022-05-04 15:55:23 +02:00
coroutine-win32.c coroutine-win32: use QEMU_DEFINE_STATIC_CO_TLS() 2022-05-04 15:55:23 +02:00
crc32c.c
crc-ccitt.c
cutils.c cutils: Add missing dyld(3) include on macOS 2022-08-12 11:33:52 +01:00
dbus.c
drm.c
envlist.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
error-report.c error-report: fix g_date_time_format assertion 2022-04-28 08:51:56 +02:00
error.c
event_notifier-posix.c Replace qemu_pipe() with g_unix_open_pipe() 2022-05-03 15:17:56 +04:00
event_notifier-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
fdmon-epoll.c
fdmon-io_uring.c aio-posix: fix build failure io_uring 2.2 2022-03-17 11:23:18 +00:00
fdmon-poll.c
fifo8.c
filemonitor-inotify.c
filemonitor-stub.c
getauxval.c
guest-random.c
hbitmap.c block: simplify handling of try to merge different sized bitmaps 2022-06-24 17:07:06 +02:00
hexdump.c include: move C/util-related declarations to cutils.h 2022-04-06 14:31:43 +02:00
host-utils.c host-utils: Implemented signed 256-by-128 division 2022-06-20 08:38:58 -03:00
id.c
int128.c
iov.c util: make do_send_recv work with partial send/recv 2022-10-12 19:22:01 +04:00
iova-tree.c util: accept iova_tree_remove_parameter by value 2022-09-02 10:22:39 +08:00
keyval.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
lockcnt.c
log.c util/log: Support per-thread log files 2022-04-20 10:51:11 -07:00
main-loop.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
memalign.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
memfd.c
meson.build cutils: Introduce bundle mechanism 2022-07-13 16:58:57 +02:00
mmap-alloc.c util/mmap-alloc: Remove qemu_mempath_getpagesize() 2022-08-26 13:34:21 +02:00
module.c module: Use bundle mechanism 2022-07-13 16:58:57 +02:00
notify.c
nvdimm-utils.c
osdep.c osdep: make readv_writev() work with partial read/write 2022-10-12 19:22:00 +04:00
oslib-posix.c util: Cleanup and rename os_mem_prealloc() 2022-10-27 11:00:28 +02:00
oslib-win32.c util: Cleanup and rename os_mem_prealloc() 2022-10-27 11:00:28 +02:00
path.c
qdist.c
qemu-co-shared-resource.c
qemu-co-timeout.c util: add qemu-co-timeout 2022-06-29 10:56:12 +03:00
qemu-config.c s390x/s390-virtio-ccw: add zpcii-disable machine property 2022-09-26 17:23:47 +02:00
qemu-coroutine-io.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
qemu-coroutine-lock.c coroutine-lock: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
qemu-coroutine-sleep.c
qemu-coroutine.c coroutine: remove incorrect coroutine_fn annotations 2022-10-07 12:11:40 +02:00
qemu-option.c
qemu-print.c
qemu-progress.c include: move progress API to qemu-progress.h 2022-04-06 14:31:43 +02:00
qemu-sockets.c util/qemu-sockets: Enable unix socket support on Windows 2022-09-02 15:54:46 +04:00
qemu-thread-common.h
qemu-thread-posix.c util: Introduce qemu_thread_set_affinity() and qemu_thread_get_affinity() 2022-10-27 11:00:36 +02:00
qemu-thread-win32.c util: Introduce qemu_thread_set_affinity() and qemu_thread_get_affinity() 2022-10-27 11:00:36 +02:00
qemu-timer-common.c
qemu-timer.c qemu-timer: Skip empty timer lists before locking in qemu_clock_deadline_ns_all 2022-06-21 09:24:34 -07:00
qht.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qsp.c
range.c
rcu.c rcu: use coroutine TLS macros 2022-03-04 18:14:40 +01:00
readline.c
selfmap.c
stats64.c
sys_membarrier.c
systemd.c
thread-pool.c thread-pool: remove stopping variable 2022-05-25 21:26:26 +02:00
throttle.c
timed-average.c
trace-events
trace.h
transactions.c
unicode.c
uri.c
userfaultfd.c
uuid.c
vfio-helpers.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
vhost-user-server.c util: rename qemu_*block() socket functions 2022-05-03 15:53:20 +04:00
yank.c