include: Move qemu_[id]cache_* declarations to new qemu/cacheinfo.h

The qemu_icache_linesize, qemu_icache_linesize_log,
qemu_dcache_linesize, and qemu_dcache_linesize_log variables are not
used in many files.  Move them out of osdep.h to a new
qemu/cacheinfo.h, and document them.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220208200856.3558249-5-peter.maydell@linaro.org

9 files changed, 28 insertions, 5 deletions

diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index bd71db59a9..5971cd53ab 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -51,6 +51,7 @@
 #include "qemu/qemu-print.h"
 #include "qemu/timer.h"
 #include "qemu/main-loop.h"
+#include "qemu/cacheinfo.h"
 #include "exec/log.h"
 #include "sysemu/cpus.h"
 #include "sysemu/cpu-timers.h"
diff --git a/include/qemu/cacheinfo.h b/include/qemu/cacheinfo.h
new file mode 100644
index 0000000000..019a157ea0
--- /dev/null
+++ b/include/qemu/cacheinfo.h
@@ -0,0 +1,21 @@
+/*
+ * QEMU host cacheinfo information
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#ifndef QEMU_CACHEINFO_H
+#define QEMU_CACHEINFO_H
+
+/*
+ * These variables represent our best guess at the host icache and
+ * dcache sizes, expressed both as the size in bytes and as the
+ * base-2 log of the size in bytes. They are initialized at startup
+ * (via an attribute 'constructor' function).
+ */
+extern int qemu_icache_linesize;
+extern int qemu_icache_linesize_log;
+extern int qemu_dcache_linesize;
+extern int qemu_dcache_linesize_log;
+
+#endif
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 165448b12f..61808edc69 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -616,11 +616,6 @@ pid_t qemu_fork(Error **errp);
 extern uintptr_t qemu_real_host_page_size;
 extern intptr_t qemu_real_host_page_mask;
 
-extern int qemu_icache_linesize;
-extern int qemu_icache_linesize_log;
-extern int qemu_dcache_linesize;
-extern int qemu_dcache_linesize_log;
-
 /*
  * After using getopt or getopt_long, if you need to parse another set
  * of options, then you must reset optind.  Unfortunately the way to
diff --git a/plugins/loader.c b/plugins/loader.c
index a4ec281692..4883b0a1cb 100644
--- a/plugins/loader.c
+++ b/plugins/loader.c
@@ -24,6 +24,7 @@
 #include "qemu/rcu_queue.h"
 #include "qemu/qht.h"
 #include "qemu/bitmap.h"
+#include "qemu/cacheinfo.h"
 #include "qemu/xxhash.h"
 #include "qemu/plugin.h"
 #include "hw/core/cpu.h"
diff --git a/tcg/region.c b/tcg/region.c
index 7b4e65a52e..72afb35738 100644
--- a/tcg/region.c
+++ b/tcg/region.c
@@ -26,6 +26,7 @@
 #include "qemu/units.h"
 #include "qemu/madvise.h"
 #include "qemu/mprotect.h"
+#include "qemu/cacheinfo.h"
 #include "qapi/error.h"
 #include "exec/exec-all.h"
 #include "tcg/tcg.h"
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 5d2f0d8b10..528277d1d3 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -36,6 +36,7 @@
 #include "qemu/qemu-print.h"
 #include "qemu/timer.h"
 #include "qemu/cacheflush.h"
+#include "qemu/cacheinfo.h"
 
 /* Note: the long term plan is to reduce the dependencies on the QEMU
    CPU definitions. Currently they are used for qemu_ld/st
diff --git a/util/atomic64.c b/util/atomic64.c
index 93037d5b11..22983a970f 100644
--- a/util/atomic64.c
+++ b/util/atomic64.c
@@ -7,6 +7,7 @@
 #include "qemu/osdep.h"
 #include "qemu/atomic.h"
 #include "qemu/thread.h"
+#include "qemu/cacheinfo.h"
 
 #ifdef CONFIG_ATOMIC64
 #error This file must only be compiled if !CONFIG_ATOMIC64
diff --git a/util/cacheflush.c b/util/cacheflush.c
index 933355b0c9..4b57186d89 100644
--- a/util/cacheflush.c
+++ b/util/cacheflush.c
@@ -7,6 +7,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/cacheflush.h"
+#include "qemu/cacheinfo.h"
 #include "qemu/bitops.h"
 
 
diff --git a/util/cacheinfo.c b/util/cacheinfo.c
index b182f0b693..ab1644d490 100644
--- a/util/cacheinfo.c
+++ b/util/cacheinfo.c
@@ -9,6 +9,7 @@
 #include "qemu/osdep.h"
 #include "qemu/host-utils.h"
 #include "qemu/atomic.h"
+#include "qemu/cacheinfo.h"
 
 int qemu_icache_linesize = 0;
 int qemu_icache_linesize_log;