Automatic merge of 'next-test' into merge-test (2024-11-21 21:12)

Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu

@@ -0,0 +1,24 @@
+What:           /sys/bus/event_source/devices/vpa_pmu/format
+Date:           November 2024
+Contact:        Linux on PowerPC Developer List <[email protected]>
+Description:    Read-only. Attribute group to describe the magic bits
+                that go into perf_event_attr.config for a particular pmu.
+                (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+                Each attribute under this group defines a bit range of the
+                perf_event_attr.config. Supported attribute are listed
+                below::
+			event = "config:0-31" - event ID
+
+		For example::
+
+		  l1_to_l2_lat = "event=0x1"
+
+What:           /sys/bus/event_source/devices/vpa_pmu/events
+Date:           November 2024
+Contact:        Linux on PowerPC Developer List <[email protected]>
+Description:	Read-only. Attribute group to describe performance monitoring
+                events for the Virtual Processor Area events. Each attribute
+		in this group describes a single performance monitoring event
+		supported by vpa_pmu. The name of the file is the name of
+		the event (See ABI/testing/sysfs-bus-event_source-devices-events).

Documentation/arch/powerpc/booting.rst

@@ -93,8 +93,8 @@ given platform based on the content of the device-tree. Thus, you
 should:
 
         a) add your platform support as a _boolean_ option in
-        arch/powerpc/Kconfig, following the example of PPC_PSERIES,
-        PPC_PMAC and PPC_MAPLE. The latter is probably a good
+        arch/powerpc/Kconfig, following the example of PPC_PSERIES
+        and PPC_PMAC. The latter is probably a good
         example of a board support to start from.
 
         b) create your main platform file as

MAINTAINERS

@@ -13100,7 +13100,7 @@ M:	Michael Ellerman <[email protected]>
 R:	Nicholas Piggin <[email protected]>
 R:	Christophe Leroy <[email protected]>
 R:	Naveen N Rao <[email protected]>
-R:	Madhavan Srinivasan <[email protected]>
+M:	Madhavan Srinivasan <[email protected]>
 L:	[email protected]
 S:	Supported
 W:	https://github.com/linuxppc/wiki/wiki

arch/Kconfig

@@ -1683,4 +1683,10 @@ config CC_HAS_SANE_FUNCTION_ALIGNMENT
 config ARCH_NEED_CMPXCHG_1_EMU
 	bool
 
+config ARCH_WANTS_PRE_LINK_VMLINUX
+	bool
+	help
+	  An architecture can select this if it provides arch/<arch>/tools/Makefile
+	  with .arch.vmlinux.o target to be linked into vmlinux.
+
 endmenu

arch/powerpc/Kbuild

@@ -19,4 +19,4 @@ obj-$(CONFIG_KEXEC_CORE)  += kexec/
 obj-$(CONFIG_KEXEC_FILE)  += purgatory/
 
 # for cleaning
-subdir- += boot
+subdir- += boot tools

arch/powerpc/Kconfig

@@ -234,6 +234,8 @@ config PPC
 	select HAVE_DEBUG_STACKOVERFLOW
 	select HAVE_DYNAMIC_FTRACE
 	select HAVE_DYNAMIC_FTRACE_WITH_ARGS	if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32
+	select HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS if PPC_FTRACE_OUT_OF_LINE || (PPC32 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY)
+	select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS if HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS	if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32
 	select HAVE_EBPF_JIT
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS
@@ -243,7 +245,7 @@ config PPC
 	select HAVE_FUNCTION_DESCRIPTORS	if PPC64_ELF_ABI_V1
 	select HAVE_FUNCTION_ERROR_INJECTION
 	select HAVE_FUNCTION_GRAPH_TRACER
-	select HAVE_FUNCTION_TRACER		if PPC64 || (PPC32 && CC_IS_GCC)
+	select HAVE_FUNCTION_TRACER		if !COMPILE_TEST && (PPC64 || (PPC32 && CC_IS_GCC))
 	select HAVE_GCC_PLUGINS			if GCC_VERSION >= 50200   # plugin support on gcc <= 5.1 is buggy on PPC
 	select HAVE_GENERIC_VDSO
 	select HAVE_HARDLOCKUP_DETECTOR_ARCH	if PPC_BOOK3S_64 && SMP
@@ -273,6 +275,8 @@ config PPC
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_RELIABLE_STACKTRACE
 	select HAVE_RSEQ
+	select HAVE_SAMPLE_FTRACE_DIRECT	if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
+	select HAVE_SAMPLE_FTRACE_DIRECT_MULTI	if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
 	select HAVE_SETUP_PER_CPU_AREA		if PPC64
 	select HAVE_SOFTIRQ_ON_OWN_STACK
 	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,$(m32-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=0)
@@ -569,6 +573,22 @@ config ARCH_USING_PATCHABLE_FUNCTION_ENTRY
 	def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN
 	def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN
 
+config PPC_FTRACE_OUT_OF_LINE
+	def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY
+	select ARCH_WANTS_PRE_LINK_VMLINUX
+
+config PPC_FTRACE_OUT_OF_LINE_NUM_RESERVE
+	int "Number of ftrace out-of-line stubs to reserve within .text"
+	depends on PPC_FTRACE_OUT_OF_LINE
+	default 32768
+	help
+	  Number of stubs to reserve for use by ftrace. This space is
+	  reserved within .text, and is distinct from any additional space
+	  added at the end of .text before the final vmlinux link. Set to
+	  zero to have stubs only be generated at the end of vmlinux (only
+	  if the size of vmlinux is less than 32MB). Set to a higher value
+	  if building vmlinux larger than 48MB.
+
 config HOTPLUG_CPU
 	bool "Support for enabling/disabling CPUs"
 	depends on SMP && (PPC_PSERIES || \

arch/powerpc/Kconfig.debug

@@ -223,12 +223,6 @@ config PPC_EARLY_DEBUG_RTAS_CONSOLE
 	help
 	  Select this to enable early debugging via the RTAS console.
 
-config PPC_EARLY_DEBUG_MAPLE
-	bool "Maple real mode"
-	depends on PPC_MAPLE
-	help
-	  Select this to enable early debugging for Maple.
-
 config PPC_EARLY_DEBUG_PAS_REALMODE
 	bool "PA Semi real mode"
 	depends on PPC_PASEMI

arch/powerpc/Makefile

@@ -62,14 +62,14 @@ KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
 endif
 
 ifdef CONFIG_CPU_LITTLE_ENDIAN
-KBUILD_CFLAGS	+= -mlittle-endian
+KBUILD_CPPFLAGS	+= -mlittle-endian
 KBUILD_LDFLAGS	+= -EL
 LDEMULATION	:= lppc
 GNUTARGET	:= powerpcle
 MULTIPLEWORD	:= -mno-multiple
 KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
 else
-KBUILD_CFLAGS += $(call cc-option,-mbig-endian)
+KBUILD_CPPFLAGS	+= $(call cc-option,-mbig-endian)
 KBUILD_LDFLAGS	+= -EB
 LDEMULATION	:= ppc
 GNUTARGET	:= powerpc
@@ -95,7 +95,7 @@ aflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(call cc-option,-mbig-endian)
 aflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -mlittle-endian
 
 ifeq ($(HAS_BIARCH),y)
-KBUILD_CFLAGS	+= -m$(BITS)
+KBUILD_CPPFLAGS	+= -m$(BITS)
 KBUILD_AFLAGS	+= -m$(BITS)
 KBUILD_LDFLAGS	+= -m elf$(BITS)$(LDEMULATION)
 endif
@@ -148,7 +148,15 @@ CC_FLAGS_NO_FPU		:= $(call cc-option,-msoft-float)
 ifdef CONFIG_FUNCTION_TRACER
 ifdef CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY
 KBUILD_CPPFLAGS	+= -DCC_USING_PATCHABLE_FUNCTION_ENTRY
+ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
+CC_FLAGS_FTRACE := -fpatchable-function-entry=1
+else
+ifdef CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS # PPC32 only
+CC_FLAGS_FTRACE := -fpatchable-function-entry=3,1
+else
 CC_FLAGS_FTRACE := -fpatchable-function-entry=2
+endif
+endif
 else
 CC_FLAGS_FTRACE := -pg
 ifdef CONFIG_MPROFILE_KERNEL
@@ -168,7 +176,6 @@ KBUILD_CPPFLAGS	+= -I $(srctree)/arch/powerpc $(asinstr)
 KBUILD_AFLAGS	+= $(AFLAGS-y)
 KBUILD_CFLAGS	+= $(CC_FLAGS_NO_FPU)
 KBUILD_CFLAGS	+= $(CFLAGS-y)
-CPP		= $(CC) -E $(KBUILD_CFLAGS)
 
 CHECKFLAGS	+= -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
 ifdef CONFIG_CPU_BIG_ENDIAN
@@ -352,7 +359,7 @@ define archhelp
   echo '  install         - Install kernel using'
   echo '                    (your) ~/bin/$(INSTALLKERNEL) or'
   echo '                    (distribution) /sbin/$(INSTALLKERNEL) or'
-  echo '                    install to $$(INSTALL_PATH) and run lilo'
+  echo '                    install to $$(INSTALL_PATH)'
   echo '  *_defconfig     - Select default config from arch/powerpc/configs'
   echo ''
   echo '  Targets with <dt> embed a device tree blob inside the image'

arch/powerpc/Makefile.postlink

@@ -24,6 +24,9 @@ else
 	$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$(NM)" "$@"
 endif
 
+quiet_cmd_ftrace_check = CHKFTRC $@
+      cmd_ftrace_check = $(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/ftrace_check.sh "$(NM)" "$@"
+
 # `@true` prevents complaint when there is nothing to be done
 
 vmlinux: FORCE
@@ -34,6 +37,11 @@ endif
 ifdef CONFIG_RELOCATABLE
 	$(call if_changed,relocs_check)
 endif
+ifdef CONFIG_FUNCTION_TRACER
+ifndef CONFIG_PPC64_ELF_ABI_V1
+	$(call cmd,ftrace_check)
+endif
+endif
 
 clean:
 	rm -f .tmp_symbols.txt

arch/powerpc/boot/.gitignore

@@ -30,7 +30,6 @@ zImage.coff
 zImage.epapr
 zImage.holly
 zImage.*lds
-zImage.maple
 zImage.miboot
 zImage.pmac
 zImage.pseries

arch/powerpc/boot/Makefile

@@ -276,7 +276,6 @@ quiet_cmd_wrap	= WRAP    $@
 
 image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
 image-$(CONFIG_PPC_POWERNV)		+= zImage.pseries
-image-$(CONFIG_PPC_MAPLE)		+= zImage.maple
 image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
 image-$(CONFIG_PPC_PS3)			+= dtbImage.ps3
 image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
@@ -444,7 +443,7 @@ $(obj)/zImage.initrd:	$(addprefix $(obj)/, $(initrd-y))
 clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
 	zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
 	zImage.miboot zImage.pmac zImage.pseries \
-	zImage.maple simpleImage.* otheros.bld
+	simpleImage.* otheros.bld
 
 # clean up files cached by wrapper
 clean-kernel-base := vmlinux.strip vmlinux.bin

arch/powerpc/boot/wrapper

@@ -271,11 +271,6 @@ pseries)
     fi
     make_space=n
     ;;
-maple)
-    platformo="$object/of.o $object/epapr.o"
-    link_address='0x400000'
-    make_space=n
-    ;;
 pmac|chrp)
     platformo="$object/of.o $object/epapr.o"
     make_space=n
@@ -517,7 +512,7 @@ fi
 
 # post-processing needed for some platforms
 case "$platform" in
-pseries|chrp|maple)
+pseries|chrp)
     $objbin/addnote "$ofile"
     ;;
 coff)

arch/powerpc/configs/ppc64_defconfig

@@ -44,7 +44,6 @@ CONFIG_PPC_SMLPAR=y
 CONFIG_IBMEBUS=y
 CONFIG_PAPR_SCM=m
 CONFIG_PPC_SVM=y
-CONFIG_PPC_MAPLE=y
 CONFIG_PPC_PASEMI=y
 CONFIG_PPC_PASEMI_IOMMU=y
 CONFIG_PPC_PS3=y