git: 3c9acc35b1d9 - main - linuxkpi: Add the `topology_*()` functions

The branch main has been updated by dumbbell:

URL: https://cgit.FreeBSD.org/src/commit/?id=3c9acc35b1d9e776fa10d45c0ad7d3737e8ccf38

commit 3c9acc35b1d9e776fa10d45c0ad7d3737e8ccf38
Author:     Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
AuthorDate: 2025-06-21 12:42:04 +0000
Commit:     Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
CommitDate: 2025-08-09 12:26:24 +0000

    linuxkpi: Add the `topology_*()` functions
    
    ... from <asm/topology.h>.
    
    The amdgpu DRM driver started to use `topology_num_cores_per_package()`
    in Linux 6.9.
    
    Reviewed by:    manu
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D50993
---
 sys/compat/linuxkpi/common/include/asm/topology.h  | 54 ++++++++++++++++++++++
 sys/compat/linuxkpi/common/include/linux/gfp.h     |  1 +
 .../linuxkpi/common/include/linux/topology.h       | 35 ++++++++++++++
 3 files changed, 90 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/asm/topology.h b/sys/compat/linuxkpi/common/include/asm/topology.h
new file mode 100644
index 000000000000..f334d3253cfb
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/asm/topology.h
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 2025 The FreeBSD Foundation
+ * Copyright (c) 2025 Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
+ *
+ * This software was developed by Jean-Sébastien Pédron under sponsorship
+ * from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef	_LINUXKPI_ASM_TOPOLOGY_H_
+#define	_LINUXKPI_ASM_TOPOLOGY_H_
+
+#if defined(__i386__) || defined(__amd64__)
+#include <sys/smp.h>
+
+/*
+ * The following functions are defined in `arch/x86/include/asm/topology.h`
+ * and thus are specific to i386 and amd64.
+ */
+
+static inline unsigned int
+topology_num_cores_per_package(void)
+{
+	return (mp_ncores);
+}
+
+static inline unsigned int
+topology_num_threads_per_package(void)
+{
+	return (mp_ncpus);
+}
+#endif
+
+#endif /* _LINUXKPI_ASM_TOPOLOGY_H_ */
diff --git a/sys/compat/linuxkpi/common/include/linux/gfp.h b/sys/compat/linuxkpi/common/include/linux/gfp.h
index 4c4caa621789..7a32e7862338 100644
--- a/sys/compat/linuxkpi/common/include/linux/gfp.h
+++ b/sys/compat/linuxkpi/common/include/linux/gfp.h
@@ -34,6 +34,7 @@
 #include <sys/malloc.h>
 
 #include <linux/page.h>
+#include <linux/topology.h>
 
 #include <vm/vm_param.h>
 #include <vm/vm_object.h>
diff --git a/sys/compat/linuxkpi/common/include/linux/topology.h b/sys/compat/linuxkpi/common/include/linux/topology.h
new file mode 100644
index 000000000000..16baffc024d1
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/topology.h
@@ -0,0 +1,35 @@
+/*-
+ * Copyright (c) 2025 The FreeBSD Foundation
+ * Copyright (c) 2025 Jean-Sébastien Pédron
+ *
+ * This software was developed by Jean-Sébastien Pédron under sponsorship
+ * from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef	_LINUXKPI_LINUX_TOPOLOGY_H_
+#define	_LINUXKPI_LINUX_TOPOLOGY_H_
+
+#include <asm/topology.h>
+
+#endif /* _LINUXKPI_LINUX_TOPOLOGY_H_ */