From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 22 Apr 2010 08:38:39 +0000 (+0100)
Subject: libxl: add sched_get_id function
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~12323
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=419794de6896184846b0f2dce5f53f7128b7ea68;p=xen.git

libxl: add sched_get_id function

To get the name of the currently used scheduler, Xen provides a
sched_id sysctl. Add a libxl wrapper around the libxc function to
query this.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Acked-by: Vincent Hanquez <vincent.hanquez@eu.citrix.com>
---

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 1ef4325e7d..3db4249a34 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2421,3 +2421,16 @@ int libxl_set_vcpucount(struct libxl_ctx *ctx, uint32_t domid, uint32_t count)
     }
     return 0;
 }
+
+/*
+ * returns one of the XEN_SCHEDULER_* constants from public/domctl.h
+ * or -1 if an error occured.
+ */
+int libxl_get_sched_id(struct libxl_ctx *ctx)
+{
+    int sched, ret;
+
+    if ((ret = xc_sched_id(ctx->xch, &sched)) != 0)
+        return ret;
+    return sched;
+}
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 8b9d869426..b079613112 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -438,5 +438,7 @@ struct libxl_vcpuinfo *libxl_list_vcpu(struct libxl_ctx *ctx, uint32_t domid,
 int libxl_set_vcpuaffinity(struct libxl_ctx *ctx, uint32_t domid, uint32_t vcpuid,
                            uint64_t *cpumap, int cpusize);
 int libxl_set_vcpucount(struct libxl_ctx *ctx, uint32_t domid, uint32_t count);
+
+int libxl_get_sched_id(struct libxl_ctx *ctx);
 #endif /* LIBXL_H */