be7635e728
KASAN needs to know whether the allocation happens in an IRQ handler. This lets us strip everything below the IRQ entry point to reduce the number of unique stack traces needed to be stored. Move the definition of __irq_entry to <linux/interrupt.h> so that the users don't need to pull in <linux/ftrace.h>. Also introduce the __softirq_entry macro which is similar to __irq_entry, but puts the corresponding functions to the .softirqentry.text section. Signed-off-by: Alexander Potapenko <glider@google.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Andrey Konovalov <adech.fo@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Konstantin Serebryany <kcc@google.com> Cc: Dmitry Chernenkov <dmitryc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
1.3 KiB
ArmAsm
73 lines
1.3 KiB
ArmAsm
/* ld script to make Meta Linux kernel */
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#include <asm/thread_info.h>
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#include <asm/page.h>
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#include <asm/cache.h>
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#include <asm-generic/vmlinux.lds.h>
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OUTPUT_FORMAT("elf32-metag", "elf32-metag", "elf32-metag")
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OUTPUT_ARCH(metag)
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ENTRY(__start)
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_jiffies = _jiffies_64;
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SECTIONS
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{
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. = CONFIG_PAGE_OFFSET;
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_text = .;
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__text = .;
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__stext = .;
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HEAD_TEXT_SECTION
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.text : {
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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IRQENTRY_TEXT
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SOFTIRQENTRY_TEXT
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*(.text.*)
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*(.gnu.warning)
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}
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__etext = .; /* End of text section */
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__sdata = .;
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RO_DATA_SECTION(PAGE_SIZE)
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RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
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__edata = .; /* End of data section */
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EXCEPTION_TABLE(16)
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NOTES
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. = ALIGN(PAGE_SIZE); /* Init code and data */
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___init_begin = .;
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INIT_TEXT_SECTION(PAGE_SIZE)
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INIT_DATA_SECTION(16)
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.init.arch.info : {
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___arch_info_begin = .;
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*(.arch.info.init)
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___arch_info_end = .;
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}
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PERCPU_SECTION(L1_CACHE_BYTES)
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___init_end = .;
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BSS_SECTION(0, PAGE_SIZE, 0)
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__end = .;
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. = ALIGN(PAGE_SIZE);
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__heap_start = .;
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DWARF_DEBUG
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/* When something in the kernel is NOT compiled as a module, the
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* module cleanup code and data are put into these segments. Both
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* can then be thrown away, as cleanup code is never called unless
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* it's a module.
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*/
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DISCARDS
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}
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