[Qemu-devel] [PATCH 06/13] [PATCH] turn info kqemu into generic info accelerator

[Glauber Costa <gcosta@redhat.com>]

---
 exec-all.h |    8 ++++++++
 kqemu.c    |   24 ++++++++++++++++++++++++
 monitor.c  |   36 +++++++++++++-----------------------
 3 files changed, 45 insertions(+), 23 deletions(-)

diff --git a/exec-all.h b/exec-all.h
index bfc6576..f1bd7ae 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -583,6 +583,7 @@ typedef struct QEMUAccel {
     void (*init_env)(CPUState *env);
     void (*flush_cache)(CPUState *env, int global);
     void (*flush_page)(CPUState *env, target_ulong addr);
+    int (*info)(CPUState *env, char *buf);
 } QEMUAccel;
 
 extern QEMUAccel *current_accel;
@@ -616,6 +617,13 @@ static inline void accel_flush_page(CPUState *env, target_ulong addr)
         current_accel->flush_page(env, addr);
 }
 
+static inline int accel_info(CPUState *env, char *buf)
+{
+    if (current_accel && current_accel->info)
+        return current_accel->info(env, buf);
+    return 0;
+}
+
 #ifdef USE_KQEMU
 #define KQEMU_MODIFY_PAGE_MASK (0xff & ~(VGA_DIRTY_FLAG | CODE_DIRTY_FLAG))
 
diff --git a/kqemu.c b/kqemu.c
index 524c74d..451d1d4 100644
--- a/kqemu.c
+++ b/kqemu.c
@@ -284,11 +284,35 @@ void kqemu_flush(CPUState *env, int global)
     nb_pages_to_flush = KQEMU_FLUSH_ALL;
 }
 
+int kqemu_info(CPUState *env, char *buf)
+{
+    int val, len;
+    val = 0;
+    val = env->kqemu_enabled;
+    len = sprintf(buf, "kqemu support: ");
+    buf += len;
+
+    switch(val) {
+    default:
+        len += sprintf(buf, "present, but bogus value\n");
+        break;
+    case 1:
+        len += sprintf(buf, "enabled for user code\n");
+        break;
+    case 2:
+        len += sprintf(buf, "enabled for user and kernel code\n");
+        break;
+    }
+
+    return len;
+}
+
 QEMUAccel kqemu_accel = {
     .cpu_interrupt = kqemu_cpu_interrupt,
     .init_env = kqemu_init_env,
     .flush_cache = kqemu_flush,
     .flush_page = kqemu_flush_page,
+    .info = kqemu_info,
 };
 
 
diff --git a/monitor.c b/monitor.c
index 236b827..cb9faef 100644
--- a/monitor.c
+++ b/monitor.c
@@ -34,6 +34,7 @@
 #include "block.h"
 #include "audio/audio.h"
 #include "disas.h"
+#include "exec-all.h"
 #include <dirent.h>
 
 #ifdef CONFIG_PROFILER
@@ -1165,34 +1166,23 @@ static void mem_info(void)
 }
 #endif
 
-static void do_info_kqemu(void)
+#define MAX_BUF 1024
+static void do_info_accelerator(void)
 {
-#ifdef USE_KQEMU
+    char buf[MAX_BUF];
     CPUState *env;
-    int val;
-    val = 0;
+
     env = mon_get_cpu();
+
     if (!env) {
         term_printf("No cpu initialized yet");
         return;
     }
-    val = env->kqemu_enabled;
-    term_printf("kqemu support: ");
-    switch(val) {
-    default:
-    case 0:
-        term_printf("disabled\n");
-        break;
-    case 1:
-        term_printf("enabled for user code\n");
-        break;
-    case 2:
-        term_printf("enabled for user and kernel code\n");
-        break;
-    }
-#else
-    term_printf("kqemu support: not compiled\n");
-#endif
+
+    if (accel_info(env, buf))
+        term_printf(buf);
+    else
+        term_printf("No accelerator present\n");
 }
 
 #ifdef CONFIG_PROFILER
@@ -1422,8 +1412,8 @@ static term_cmd_t info_cmds[] = {
 #endif
     { "jit", "", do_info_jit,
       "", "show dynamic compiler info", },
-    { "kqemu", "", do_info_kqemu,
-      "", "show kqemu information", },
+    { "accelerator", "", do_info_accelerator,
+      "", "show accelerator information", },
     { "usb", "", usb_info,
       "", "show guest USB devices", },
     { "usbhost", "", usb_host_info,
-- 
1.5.5