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| author | David Howells <dhowells@redhat.com> | 2018-01-02 15:12:01 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-01-09 23:21:02 +0000 |
| commit | 0500871f21b237b2bea2d9db405eadf78e5aab05 (patch) | |
| tree | 6004424368ea44f74d9d9d66fb565a59d3dba970 /arch/openrisc | |
| parent | 138101932054268a235c6ac7cf474f6a88fcd885 (diff) | |
| download | linux-0500871f21b237b2bea2d9db405eadf78e5aab05.tar.gz linux-0500871f21b237b2bea2d9db405eadf78e5aab05.tar.bz2 linux-0500871f21b237b2bea2d9db405eadf78e5aab05.zip | |
Construct init thread stack in the linker script rather than by union
Construct the init thread stack in the linker script rather than doing it
by means of a union so that ia64's init_task.c can be got rid of.
The following symbols are then made available from INIT_TASK_DATA() linker
script macro:
init_thread_union
init_stack
INIT_TASK_DATA() also expands the region to THREAD_SIZE to accommodate the
size of the init stack. init_thread_union is given its own section so that
it can be placed into the stack space in the right order. I'm assuming
that the ia64 ordering is correct and that the task_struct is first and the
thread_info second.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/openrisc')
| -rw-r--r-- | arch/openrisc/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/thread_info.h | 2 |
2 files changed, 0 insertions, 4 deletions
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h index 396d8f306c21..af31a9fe736a 100644 --- a/arch/openrisc/include/asm/processor.h +++ b/arch/openrisc/include/asm/processor.h @@ -84,8 +84,6 @@ void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp); void release_thread(struct task_struct *); unsigned long get_wchan(struct task_struct *p); -#define init_stack (init_thread_union.stack) - #define cpu_relax() barrier() #endif /* __ASSEMBLY__ */ diff --git a/arch/openrisc/include/asm/thread_info.h b/arch/openrisc/include/asm/thread_info.h index c229aa6bb502..5c15dfa2fd4f 100644 --- a/arch/openrisc/include/asm/thread_info.h +++ b/arch/openrisc/include/asm/thread_info.h @@ -79,8 +79,6 @@ struct thread_info { .ksp = 0, \ } -#define init_thread_info (init_thread_union.thread_info) - /* how to get the thread information struct from C */ register struct thread_info *current_thread_info_reg asm("r10"); #define current_thread_info() (current_thread_info_reg) |