android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

unicore: switch to copy_thread_tls()

Browse Source 
Use the copy_thread_tls() calling convention which passes tls through a
register. This is required so we can remove the copy_thread{_tls}() split
and remove the HAVE_COPY_THREAD_TLS macro.

Cc: Guan Xuetao <gxt@pku.edu.cn>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2020-05-24 23:29:27 +02:00
parent 15350c4226
commit 8496da092a
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/unicore32/Kconfig
View File

@ -22,6 +22,7 @@ config UNICORE32
select MODULES_USE_ELF_REL
select NEED_DMA_MAP_STATE
select MMU_GATHER_NO_RANGE if MMU
select HAVE_COPY_THREAD_TLS
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip

8
arch/unicore32/kernel/process.c
View File

@ -219,9 +219,9 @@ void release_thread(struct task_struct *dead_task)
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread");
int
copy_thread(unsigned long clone_flags, unsigned long stack_start,
unsigned long stk_sz, struct task_struct *p)
int copy_thread_tls(unsigned long clone_flags, unsigned long stack_start,
unsigned long stk_sz, struct task_struct *p,
unsigned long tls)
{
struct thread_info *thread = task_thread_info(p);
struct pt_regs *childregs = task_pt_regs(p);
@ -241,7 +241,7 @@ copy_thread(unsigned long clone_flags, unsigned long stack_start,
childregs->UCreg_sp = stack_start;
if (clone_flags & CLONE_SETTLS)
childregs->UCreg_16 = childregs->UCreg_03;
childregs->UCreg_16 = tls;
}
return 0;
}