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Merge tag 'csky-for-linus-5.9-rc1' of https://github.com/c-sky/csky-linux

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Pull arch/csky updates from Guo Ren:
 "New features:
   - seccomp-filter
   - err-injection
   - top-down&random mmap-layout
   - irq_work
   - show_ipi
   - context-tracking

  Fixes & Optimizations:
   - kprobe_on_ftrace
   - optimize panic print"

* tag 'csky-for-linus-5.9-rc1' of https://github.com/c-sky/csky-linux:
  csky: Add context tracking support
  csky: Add arch_show_interrupts for IPI interrupts
  csky: Add irq_work support
  csky: Fixup warning by EXPORT_SYMBOL(kmap)
  csky: Set CONFIG_NR_CPU 4 as default
  csky: Use top-down mmap layout
  csky: Optimize the trap processing flow
  csky: Add support for function error injection
  csky: Fixup kprobes handler couldn't change pc
  csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE
  csky: Add cpu feature register hint for smp
  csky: Add SECCOMP_FILTER supported
  csky: remove unusued thread_saved_pc and *_segments functions/macros
This commit is contained in:
Linus Torvalds
2020-08-06 10:15:28 -07:00
parent bbcf9cd157 bdcd93ef9a
commit 2044513ffe
19 changed files with 321 additions and 146 deletions
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10
arch/csky/kernel/process.c
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@@ -30,16 +30,6 @@ asmlinkage void ret_from_kernel_thread(void);
*/
void flush_thread(void){}
/*
* Return saved PC from a blocked thread
*/
unsigned long thread_saved_pc(struct task_struct *tsk)
{
struct switch_stack *sw = (struct switch_stack *)tsk->thread.sp;
return sw->r15;
}
int copy_thread(unsigned long clone_flags,
unsigned long usp,
unsigned long kthread_arg,