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Merge branch 'perf/urgent' into perf/core, to pick up fixes

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Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2017-08-25 11:01:05 +02:00
commit 290d9bf281
41 changed files with 319 additions and 214 deletions
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38
include/asm-generic/vmlinux.lds.h
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@ -59,6 +59,22 @@
/* Align . to a 8 byte boundary equals to maximum function alignment. */
#define ALIGN_FUNCTION() . = ALIGN(8)
/*
* LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which
* generates .data.identifier sections, which need to be pulled in with
* .data. We don't want to pull in .data..other sections, which Linux
* has defined. Same for text and bss.
*/
#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
#define DATA_MAIN .data .data.[0-9a-zA-Z_]*
#define BSS_MAIN .bss .bss.[0-9a-zA-Z_]*
#else
#define TEXT_MAIN .text
#define DATA_MAIN .data
#define BSS_MAIN .bss
#endif
/*
* Align to a 32 byte boundary equal to the
* alignment gcc 4.5 uses for a struct
@ -198,12 +214,9 @@
/*
* .data section
* LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections generates
* .data.identifier which needs to be pulled in with .data, but don't want to
* pull in .data..stuff which has its own requirements. Same for bss.
*/
#define DATA_DATA \
*(.data .data.[0-9a-zA-Z_]*) \
*(DATA_MAIN) \
*(.ref.data) \
*(.data..shared_aligned) /* percpu related */ \
MEM_KEEP(init.data) \
@ -434,16 +447,17 @@
VMLINUX_SYMBOL(__security_initcall_end) = .; \
}
/* .text section. Map to function alignment to avoid address changes
/*
* .text section. Map to function alignment to avoid address changes
* during second ld run in second ld pass when generating System.map
* LD_DEAD_CODE_DATA_ELIMINATION option enables -ffunction-sections generates
* .text.identifier which needs to be pulled in with .text , but some
* architectures define .text.foo which is not intended to be pulled in here.
* Those enabling LD_DEAD_CODE_DATA_ELIMINATION must ensure they don't have
* conflicting section names, and must pull in .text.[0-9a-zA-Z_]* */
*
* TEXT_MAIN here will match .text.fixup and .text.unlikely if dead
* code elimination is enabled, so these sections should be converted
* to use ".." first.
*/
#define TEXT_TEXT \
ALIGN_FUNCTION(); \
*(.text.hot .text .text.fixup .text.unlikely) \
*(.text.hot TEXT_MAIN .text.fixup .text.unlikely) \
*(.ref.text) \
MEM_KEEP(init.text) \
MEM_KEEP(exit.text) \
@ -605,7 +619,7 @@
BSS_FIRST_SECTIONS \
*(.bss..page_aligned) \
*(.dynbss) \
*(.bss .bss.[0-9a-zA-Z_]*) \
*(BSS_MAIN) \
*(COMMON) \
}