[PATCH v4 5/8] qemu_process: Enable SCHED_CORE for QEMU process

[Michal Privoznik <mprivozn@xxxxxxxxxx>]

For QEMU_SCHED_CORE_EMULATOR or QEMU_SCHED_CORE_FULL the QEMU
process (and its vCPU threads) should be placed into its own
scheduling group. Since we have the dummy process running for
exactly this purpose use its PID as an argument to
virCommandSetRunAmong().

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
---
 src/qemu/qemu_process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 7385f9fb28..808558227e 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -7539,6 +7539,9 @@ qemuProcessLaunch(virConnectPtr conn,
         virCommandSetMaxProcesses(cmd, cfg->maxProcesses);
     if (cfg->maxFiles > 0)
         virCommandSetMaxFiles(cmd, cfg->maxFiles);
+    if (cfg->schedCore == QEMU_SCHED_CORE_EMULATOR ||
+        cfg->schedCore == QEMU_SCHED_CORE_FULL)
+        virCommandSetRunAmong(cmd, priv->schedCoreChildPID);
 
     /* In this case, however, zero means that core dumps should be
      * disabled, and so we always need to set the limit explicitly */
-- 
2.35.1