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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2017-08-29 22:33:57 +0200 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2017-09-11 01:34:52 +0200 |
| commit | 861e37da6a06c867b51528066cad84c0fb90cc0c (patch) | |
| tree | c35a624a1ec38a6bcb6cead49134024c4fc83cf3 | |
| parent | ARM: vmlinux*.lds.S: some decruftification (diff) | |
| download | linux-861e37da6a06c867b51528066cad84c0fb90cc0c.tar.xz linux-861e37da6a06c867b51528066cad84c0fb90cc0c.zip | |
ARM: vmlinux.lds.S: replace open coded .data sections with generic macros
Our .data section is missing PAGE_ALIGNED_DATA() which contains,
amongst other things, the vdso page. This creates a System.map that
looks like this:
c15769a8 D _edata
c1577000 d vdso_data_store
c1578000 D __start___bug_table
c1580544 D __stop___bug_table
c1580544 B __bss_start
By using RW_DATA_SECTION() we pick whatever generic sections might be
added in the future and have page-aligned data next to other strongly
aligned data. Furthermore we now include the entire thing, including the
bug table, in the data accounting surrounded by _sdata/_edata.
While at it let's also remplace the open coded .init.data by its
equivalent INIT_DATA_SECTION().
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Chris Brandt <Chris.Brandt@renesas.com>
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 38 |
1 files changed, 6 insertions, 32 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 4f86b4b7bdcc..f73ba564b5e5 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -214,14 +214,9 @@ SECTIONS *(.pv_table) __pv_table_end = .; } - .init.data : { - INIT_DATA - INIT_SETUP(16) - INIT_CALLS - CON_INITCALL - SECURITY_INITCALL - INIT_RAM_FS - } + + INIT_DATA_SECTION(16) + .exit.data : { ARM_EXIT_KEEP(EXIT_DATA) } @@ -237,30 +232,9 @@ SECTIONS #endif __init_end = .; - .data : { - _data = .; /* address in memory */ - _sdata = .; - - /* - * first, the init task union, aligned - * to an 8192 byte boundary. - */ - INIT_TASK_DATA(THREAD_SIZE) - - NOSAVE_DATA - CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) - READ_MOSTLY_DATA(L1_CACHE_BYTES) - - /* - * and the usual data section - */ - DATA_DATA - CONSTRUCTORS - - _edata = .; - } - - BUG_TABLE + _sdata = .; + RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) + _edata = .; #ifdef CONFIG_HAVE_TCM /* |