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cc19018a12
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>
Bug: 64145065
(cherry-picked from be7635e728)
Change-Id: Ib321eb9c2b76ef4785cf3fd522169f524348bd9a
Signed-off-by: Paul Lawrence <paullawrence@google.com>
163 lines
3.0 KiB
ArmAsm
163 lines
3.0 KiB
ArmAsm
/* ld script for sparc32/sparc64 kernel */
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/page.h>
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#include <asm/thread_info.h>
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#ifdef CONFIG_SPARC32
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#define INITIAL_ADDRESS 0x10000 + SIZEOF_HEADERS
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#define TEXTSTART 0xf0004000
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#define SMP_CACHE_BYTES_SHIFT 5
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#else
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#define SMP_CACHE_BYTES_SHIFT 6
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#define INITIAL_ADDRESS 0x4000
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#define TEXTSTART 0x0000000000404000
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#endif
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#define SMP_CACHE_BYTES (1 << SMP_CACHE_BYTES_SHIFT)
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#ifdef CONFIG_SPARC32
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OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparc")
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OUTPUT_ARCH(sparc)
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ENTRY(_start)
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jiffies = jiffies_64 + 4;
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#else
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/* sparc64 */
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OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
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OUTPUT_ARCH(sparc:v9a)
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ENTRY(_start)
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jiffies = jiffies_64;
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#endif
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#ifdef CONFIG_SPARC64
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ASSERT((swapper_tsb == 0x0000000000408000), "Error: sparc64 early assembler too large")
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#endif
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SECTIONS
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{
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#ifdef CONFIG_SPARC64
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swapper_pg_dir = 0x0000000000402000;
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#endif
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. = INITIAL_ADDRESS;
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.text TEXTSTART :
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{
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_text = .;
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HEAD_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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*(.gnu.warning)
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} = 0
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_etext = .;
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RO_DATA(PAGE_SIZE)
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/* Start of data section */
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_sdata = .;
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.data1 : {
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*(.data1)
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}
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RW_DATA_SECTION(SMP_CACHE_BYTES, 0, THREAD_SIZE)
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/* End of data section */
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_edata = .;
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.fixup : {
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__start___fixup = .;
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*(.fixup)
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__stop___fixup = .;
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}
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EXCEPTION_TABLE(16)
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NOTES
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. = ALIGN(PAGE_SIZE);
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__init_begin = ALIGN(PAGE_SIZE);
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INIT_TEXT_SECTION(PAGE_SIZE)
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__init_text_end = .;
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INIT_DATA_SECTION(16)
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. = ALIGN(4);
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.tsb_ldquad_phys_patch : {
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__tsb_ldquad_phys_patch = .;
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*(.tsb_ldquad_phys_patch)
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__tsb_ldquad_phys_patch_end = .;
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}
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.tsb_phys_patch : {
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__tsb_phys_patch = .;
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*(.tsb_phys_patch)
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__tsb_phys_patch_end = .;
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}
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.cpuid_patch : {
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__cpuid_patch = .;
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*(.cpuid_patch)
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__cpuid_patch_end = .;
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}
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.sun4v_1insn_patch : {
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__sun4v_1insn_patch = .;
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*(.sun4v_1insn_patch)
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__sun4v_1insn_patch_end = .;
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}
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.sun4v_2insn_patch : {
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__sun4v_2insn_patch = .;
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*(.sun4v_2insn_patch)
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__sun4v_2insn_patch_end = .;
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}
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.leon_1insn_patch : {
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__leon_1insn_patch = .;
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*(.leon_1insn_patch)
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__leon_1insn_patch_end = .;
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}
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.swapper_tsb_phys_patch : {
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__swapper_tsb_phys_patch = .;
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*(.swapper_tsb_phys_patch)
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__swapper_tsb_phys_patch_end = .;
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}
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.swapper_4m_tsb_phys_patch : {
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__swapper_4m_tsb_phys_patch = .;
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*(.swapper_4m_tsb_phys_patch)
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__swapper_4m_tsb_phys_patch_end = .;
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}
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.popc_3insn_patch : {
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__popc_3insn_patch = .;
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*(.popc_3insn_patch)
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__popc_3insn_patch_end = .;
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}
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.popc_6insn_patch : {
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__popc_6insn_patch = .;
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*(.popc_6insn_patch)
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__popc_6insn_patch_end = .;
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}
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.pause_3insn_patch : {
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__pause_3insn_patch = .;
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*(.pause_3insn_patch)
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__pause_3insn_patch_end = .;
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}
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.sun_m7_2insn_patch : {
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__sun_m7_2insn_patch = .;
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*(.sun_m7_2insn_patch)
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__sun_m7_2insn_patch_end = .;
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}
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PERCPU_SECTION(SMP_CACHE_BYTES)
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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BSS_SECTION(0, 0, 0)
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_end = . ;
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STABS_DEBUG
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DWARF_DEBUG
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DISCARDS
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}
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