[Qemu-devel] [PATCH v2 3/3] Add workerthreads configuration option

[Matthias Brugger]

This patch allows to choose at the command line level which thread pool
implementation will be used by every block device.

Signed-off-by: Matthias Brugger <address@hidden>
---
 blockdev.c      | 13 +++++++++++++
 qemu-options.hx |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/blockdev.c b/blockdev.c
index b260477..a16cc9a 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -387,6 +387,15 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
         }
     }
 #endif
+    buf = qemu_opt_get(opts, "workerthreads");
+    if (buf != NULL) {
+        if (!strcmp(buf, "pool")) {
+            /* this is the default */
+        } else {
+            error_report("invalid workerthreads option");
+            return NULL;
+        }
+    }
 
     if ((buf = qemu_opt_get(opts, "format")) != NULL) {
         if (is_help_option(buf)) {
@@ -2269,6 +2278,10 @@ QemuOptsList qemu_common_drive_opts = {
             .type = QEMU_OPT_STRING,
             .help = "disk serial number",
         },{
+            .name = "workerthreads",
+            .type = QEMU_OPT_STRING,
+            .help = "type of worker threads (pool)",
+        },{
             .name = "rerror",
             .type = QEMU_OPT_STRING,
             .help = "read error action",
diff --git a/qemu-options.hx b/qemu-options.hx
index 5dc8b75..6f22242 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -408,7 +408,7 @@ DEF("drive", HAS_ARG, QEMU_OPTION_drive,
     "       [,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off]\n"
     "       
[,cache=writethrough|writeback|none|directsync|unsafe][,format=f]\n"
     "       [,serial=s][,addr=A][,id=name][,aio=threads|native]\n"
-    "       [,readonly=on|off][,copy-on-read=on|off]\n"
+    "       [,workerthreads=pool][,readonly=on|off][,copy-on-read=on|off]\n"
     "       [[,bps=b]|[[,bps_rd=r][,bps_wr=w]]]\n"
     "       [[,iops=i]|[[,iops_rd=r][,iops_wr=w]]]\n"
     "       [[,bps_max=bm]|[[,bps_rd_max=rm][,bps_wr_max=wm]]]\n"
-- 
1.8.1.2