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https://github.com/edk2-porting/linux-next.git
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27f6b41662
The current virtual timer interface is inherently per-cpu and hard to use. The sole user of the interface is appldata which uses it to execute a function after a specific amount of cputime has been used over all cpus. Rework the virtual timer interface to hook into the cputime accounting. This makes the interface independent from the CPU timer interrupts, and makes the virtual timers global as opposed to per-cpu. Overall the code is greatly simplified. The downside is that the accuracy is not as good as the original implementation, but it is still good enough for appldata. Reviewed-by: Jan Glauber <jang@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
#ifndef _ENTRY_H
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#define _ENTRY_H
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#include <linux/types.h>
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#include <linux/signal.h>
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#include <asm/ptrace.h>
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#include <asm/cputime.h>
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extern void (*pgm_check_table[128])(struct pt_regs *);
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extern void *restart_stack;
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void system_call(void);
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void pgm_check_handler(void);
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void ext_int_handler(void);
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void io_int_handler(void);
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void mcck_int_handler(void);
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void restart_int_handler(void);
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void restart_call_handler(void);
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void psw_idle(struct s390_idle_data *, unsigned long);
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asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
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asmlinkage void do_syscall_trace_exit(struct pt_regs *regs);
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void do_protection_exception(struct pt_regs *regs);
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void do_dat_exception(struct pt_regs *regs);
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void do_asce_exception(struct pt_regs *regs);
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void do_per_trap(struct pt_regs *regs);
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void syscall_trace(struct pt_regs *regs, int entryexit);
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void kernel_stack_overflow(struct pt_regs * regs);
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void do_signal(struct pt_regs *regs);
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void handle_signal32(unsigned long sig, struct k_sigaction *ka,
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siginfo_t *info, sigset_t *oldset, struct pt_regs *regs);
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void do_notify_resume(struct pt_regs *regs);
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struct ext_code;
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void do_extint(struct pt_regs *regs, struct ext_code, unsigned int, unsigned long);
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void do_restart(void);
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void __init startup_init(void);
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void die(struct pt_regs *regs, const char *str);
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void __init time_init(void);
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struct s390_mmap_arg_struct;
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struct fadvise64_64_args;
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struct old_sigaction;
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long sys_mmap2(struct s390_mmap_arg_struct __user *arg);
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long sys_s390_ipc(uint call, int first, unsigned long second,
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unsigned long third, void __user *ptr);
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long sys_s390_personality(unsigned int personality);
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long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low,
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size_t len, int advice);
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long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args);
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long sys_s390_fallocate(int fd, int mode, loff_t offset, u32 len_high,
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u32 len_low);
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long sys_fork(void);
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long sys_clone(unsigned long newsp, unsigned long clone_flags,
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int __user *parent_tidptr, int __user *child_tidptr);
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long sys_vfork(void);
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void execve_tail(void);
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long sys_execve(const char __user *name, const char __user *const __user *argv,
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const char __user *const __user *envp);
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long sys_sigsuspend(int history0, int history1, old_sigset_t mask);
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long sys_sigaction(int sig, const struct old_sigaction __user *act,
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struct old_sigaction __user *oact);
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long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss);
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long sys_sigreturn(void);
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long sys_rt_sigreturn(void);
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long sys32_sigreturn(void);
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long sys32_rt_sigreturn(void);
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#endif /* _ENTRY_H */
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