[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v4 3/5] build: Alloc space for sched list in the link file
Creates a section to contain scheduler entry pointers that are gathered together into an array. This will allow, in a follow-on patch, scheduler entries to be automatically gathered together into the array for automatic parsing. CC: Ian Campbell <ian.campbell@xxxxxxxxxx> CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx> CC: Keir Fraser <keir@xxxxxxx> CC: Jan Beulich <jbeulich@xxxxxxxx> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Signed-off-by: Jonathan Creekmore <jonathan.creekmore@xxxxxxxxx> Reviewed-by: Doug Goldstein <cardoe@xxxxxxxxxx> --- Changed since v3: * Add defensive check for schedulers in the linker Changed since v1: * rename the __start and __end symbols to better match the rest of the file --- xen/arch/arm/xen.lds.S | 5 +++++ xen/arch/x86/xen.lds.S | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/xen/arch/arm/xen.lds.S b/xen/arch/arm/xen.lds.S index 0488f37..2492def 100644 --- a/xen/arch/arm/xen.lds.S +++ b/xen/arch/arm/xen.lds.S @@ -57,6 +57,10 @@ SECTIONS . = ALIGN(PAGE_SIZE); *(.data.page_aligned) *(.data) + . = ALIGN(8); + __start_schedulers_array = .; + *(.data.schedulers) + __end_schedulers_array = .; *(.data.rel) *(.data.rel.*) CONSTRUCTORS @@ -193,3 +197,4 @@ SECTIONS * code running on the boot time identity map cannot cross a section boundary. */ ASSERT( _end_boot - start <= PAGE_SIZE, "Boot code is larger than 4K") +ASSERT((__end_schedulers_array - __start_schedulers_array) > 0, "no schedulers compiled in") diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S index e18e08f..63f89af 100644 --- a/xen/arch/x86/xen.lds.S +++ b/xen/arch/x86/xen.lds.S @@ -80,6 +80,10 @@ SECTIONS __stop___pre_ex_table = .; *(.data.read_mostly) + . = ALIGN(8); + __start_schedulers_array = .; + *(.data.schedulers) + __end_schedulers_array = .; *(.data.rel.ro) *(.data.rel.ro.*) } :text @@ -226,3 +230,4 @@ ASSERT(kexec_reloc_size - kexec_reloc <= PAGE_SIZE, "kexec_reloc is too large") #endif ASSERT((cpu0_stack & (STACK_SIZE - 1)) == 0, "cpu0_stack misaligned") +ASSERT((__end_schedulers_array - __start_schedulers_array) > 0, "no schedulers compiled in") -- 2.6.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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