Dmitrii Gavrilov e55ec34d3e system/qdev-monitor: move drain_call_rcu call under if (!dev) in qmp_device_add() ...

Original goal of addition of drain_call_rcu to qmp_device_add was to cover
the failure case of qdev_device_add. It seems call of drain_call_rcu was
misplaced in 7bed89958bfbf40df what led to waiting for pending RCU callbacks
under happy path too. What led to overall performance degradation of
qmp_device_add.

In this patch call of drain_call_rcu moved under handling of failure of
qdev_device_add.

Signed-off-by: Dmitrii Gavrilov <ds-gavr@yandex-team.ru>
Message-ID: <20231103105602.90475-1-ds-gavr@yandex-team.ru>
Fixes: 7bed89958bf ("device_core: use drain_call_rcu in in qmp_device_add", 2020-10-12)
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 012b170173bcaa14b9bc26209e0813311ac78489)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

2024-03-13 23:09:00 +03:00

..

arch_init.c

…

balloon.c

…

bootdevice.c

…

cpu-throttle.c

…

cpu-timers.c

…

cpus.c

…

datadir.c

…

device_tree.c

…

dirtylimit.c

…

dma-helpers.c

…

globals.c

…

icount.c

…

ioport.c

…

main.c

…

memory_mapping.c

…

memory.c

…

meson.build

…

physmem.c

…

qdev-monitor.c

system/qdev-monitor: move drain_call_rcu call under if (!dev) in qmp_device_add()

2024-03-13 23:09:00 +03:00

qemu-seccomp.c

…

qtest.c

…

rtc.c

…

runstate-action.c

…

runstate.c

…

timers-state.h

…

tpm.c

…

trace-events

…

trace.h

…

vl.c

system/vl: Update description for input grab key

2024-02-22 18:46:10 +03:00