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| author | Guo Ren <guoren@linux.alibaba.com> | 2020-02-12 05:24:52 +0300 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2020-02-21 10:43:25 +0300 |
| commit | 0b9f386c4be6493d282aab0af6f9b70c62142777 (patch) | |
| tree | 41b2b3541a5d776249ddafa659408ba88ece742b /arch | |
| parent | 5b49c82dadfe0f3741778f57385f964ec1514863 (diff) | |
| download | linux-0b9f386c4be6493d282aab0af6f9b70c62142777.tar.xz | |
csky: Implement copy_thread_tls
This is required for clone3 which passes the TLS value through a
struct rather than a register.
Cc: Amanieu d'Antras <amanieu@gmail.com>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/csky/Kconfig | 1 | ||||
| -rw-r--r-- | arch/csky/kernel/process.c | 7 |
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 72b2999a889a..047427f71d83 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -36,6 +36,7 @@ config CSKY select GX6605S_TIMER if CPU_CK610 select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_AUDITSYSCALL + select HAVE_COPY_THREAD_TLS select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER diff --git a/arch/csky/kernel/process.c b/arch/csky/kernel/process.c index 5349cd8c0f30..f7b231ca269a 100644 --- a/arch/csky/kernel/process.c +++ b/arch/csky/kernel/process.c @@ -40,10 +40,11 @@ unsigned long thread_saved_pc(struct task_struct *tsk) return sw->r15; } -int copy_thread(unsigned long clone_flags, +int copy_thread_tls(unsigned long clone_flags, unsigned long usp, unsigned long kthread_arg, - struct task_struct *p) + struct task_struct *p, + unsigned long tls) { struct switch_stack *childstack; struct pt_regs *childregs = task_pt_regs(p); @@ -70,7 +71,7 @@ int copy_thread(unsigned long clone_flags, childregs->usp = usp; if (clone_flags & CLONE_SETTLS) task_thread_info(p)->tp_value = childregs->tls - = childregs->regs[0]; + = tls; childregs->a0 = 0; childstack->r15 = (unsigned long) ret_from_fork; |