From 74e7904559a10cbb9fbf9139c5c42fc87c0f62a4 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 17 Jan 2009 15:26:32 +0900 Subject: linker script: add missing .data.percpu.page_aligned arm, arm/mach-integrator and powerpc were missing .data.percpu.page_aligned in their percpu output section definitions. Add it. Signed-off-by: Tejun Heo --- arch/powerpc/kernel/vmlinux.lds.S | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/kernel/vmlinux.lds.S') diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 47bf15cd2c9e..04e8ecea9b40 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -182,6 +182,7 @@ SECTIONS . = ALIGN(PAGE_SIZE); .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { __per_cpu_start = .; + *(.data.percpu.page_aligned) *(.data.percpu) *(.data.percpu.shared_aligned) __per_cpu_end = .; -- cgit v1.2.3 From 19390c4d03688b9940a1836f06b76ec622b9cd6f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 10 Mar 2009 16:27:48 +0900 Subject: linker script: define __per_cpu_load on all SMP capable archs Impact: __per_cpu_load available on all SMP capable archs Percpu now requires three symbols to be defined - __per_cpu_load, __per_cpu_start and __per_cpu_end. There were three archs which didn't have it. Update them as follows. * powerpc: can use generic PERCPU() macro. Compile tested for powerpc32, compile/boot tested for powerpc64. * ia64: can use generic PERCPU_VADDR() macro. __phys_per_cpu_start is identical to __per_cpu_load. Compile tested and symbol table looks identical after the change except for the additional __per_cpu_load. * arm: added explicit __per_cpu_load definition. Currently uses unified .init output section so can't use the generic macro. Dunno whether the unified .init ouput section is required by arch peculiarity so I left it alone. Please break it up and use PERCPU() if possible. Signed-off-by: Tejun Heo Cc: Benjamin Herrenschmidt Cc: Pat Gefre Cc: Russell King --- arch/arm/kernel/vmlinux.lds.S | 1 + arch/ia64/kernel/vmlinux.lds.S | 12 ++---------- arch/powerpc/kernel/vmlinux.lds.S | 9 +-------- 3 files changed, 4 insertions(+), 18 deletions(-) (limited to 'arch/powerpc/kernel/vmlinux.lds.S') diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 85598f7da407..1602373e539c 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -64,6 +64,7 @@ SECTIONS __initramfs_end = .; #endif . = ALIGN(4096); + __per_cpu_load = .; __per_cpu_start = .; *(.data.percpu.page_aligned) *(.data.percpu) diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S index f45e4e508eca..3765efc5f963 100644 --- a/arch/ia64/kernel/vmlinux.lds.S +++ b/arch/ia64/kernel/vmlinux.lds.S @@ -213,17 +213,9 @@ SECTIONS { *(.data.cacheline_aligned) } /* Per-cpu data: */ - percpu : { } :percpu . = ALIGN(PERCPU_PAGE_SIZE); - __phys_per_cpu_start = .; - .data.percpu PERCPU_ADDR : AT(__phys_per_cpu_start - LOAD_OFFSET) - { - __per_cpu_start = .; - *(.data.percpu.page_aligned) - *(.data.percpu) - *(.data.percpu.shared_aligned) - __per_cpu_end = .; - } + PERCPU_VADDR(PERCPU_ADDR, :percpu) + __phys_per_cpu_start = __per_cpu_load; . = __phys_per_cpu_start + PERCPU_PAGE_SIZE; /* ensure percpu data fits * into percpu page size */ diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 295ccc5e86b1..67f07f453385 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -181,14 +181,7 @@ SECTIONS __initramfs_end = .; } #endif - . = ALIGN(PAGE_SIZE); - .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { - __per_cpu_start = .; - *(.data.percpu.page_aligned) - *(.data.percpu) - *(.data.percpu.shared_aligned) - __per_cpu_end = .; - } + PERCPU(PAGE_SIZE) . = ALIGN(8); .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { -- cgit v1.2.3