diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2019-02-06 04:10:48 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2019-05-29 17:31:42 +0300 |
| commit | 6f25a967646aa3204d78eb03f72798169bb18607 (patch) | |
| tree | b5c8304287d257ad1b423a40b81c43166c884e43 | |
| parent | e1656829719f9e8005ae281984b5624fc2604ad3 (diff) | |
| download | linux-6f25a967646aa3204d78eb03f72798169bb18607.tar.xz | |
signal/riscv: Remove tsk parameter from do_trap
The do_trap function is always called with tsk == current.
Make that obvious by removing the tsk parameter.
This also makes it clear that do_trap calls force_sig_fault
on the current task.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | arch/riscv/include/asm/bug.h | 2 | ||||
| -rw-r--r-- | arch/riscv/kernel/traps.c | 7 | ||||
| -rw-r--r-- | arch/riscv/mm/fault.c | 6 |
3 files changed, 8 insertions, 7 deletions
diff --git a/arch/riscv/include/asm/bug.h b/arch/riscv/include/asm/bug.h index 52a1fbdeab3b..f1390914ba7a 100644 --- a/arch/riscv/include/asm/bug.h +++ b/arch/riscv/include/asm/bug.h @@ -94,7 +94,7 @@ struct task_struct; extern void die(struct pt_regs *regs, const char *str); extern void do_trap(struct pt_regs *regs, int signo, int code, - unsigned long addr, struct task_struct *tsk); + unsigned long addr); #endif /* !__ASSEMBLY__ */ diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index 3d1a651dc54c..71445a928c1b 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -63,9 +63,10 @@ void die(struct pt_regs *regs, const char *str) do_exit(SIGSEGV); } -void do_trap(struct pt_regs *regs, int signo, int code, - unsigned long addr, struct task_struct *tsk) +void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr) { + struct task_struct *tsk = current; + if (show_unhandled_signals && unhandled_signal(tsk, signo) && printk_ratelimit()) { pr_info("%s[%d]: unhandled signal %d code 0x%x at 0x" REG_FMT, @@ -82,7 +83,7 @@ static void do_trap_error(struct pt_regs *regs, int signo, int code, unsigned long addr, const char *str) { if (user_mode(regs)) { - do_trap(regs, signo, code, addr, current); + do_trap(regs, signo, code, addr); } else { if (!fixup_exception(regs)) die(regs, str); diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index cec8be9e2d6a..0a0081d9b766 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -181,7 +181,7 @@ bad_area: up_read(&mm->mmap_sem); /* User mode accesses just cause a SIGSEGV */ if (user_mode(regs)) { - do_trap(regs, SIGSEGV, code, addr, tsk); + do_trap(regs, SIGSEGV, code, addr); return; } @@ -217,7 +217,7 @@ do_sigbus: /* Kernel mode? Handle exceptions or die */ if (!user_mode(regs)) goto no_context; - do_trap(regs, SIGBUS, BUS_ADRERR, addr, tsk); + do_trap(regs, SIGBUS, BUS_ADRERR, addr); return; vmalloc_fault: @@ -231,7 +231,7 @@ vmalloc_fault: /* User mode accesses just cause a SIGSEGV */ if (user_mode(regs)) - return do_trap(regs, SIGSEGV, code, addr, tsk); + return do_trap(regs, SIGSEGV, code, addr); /* * Synchronize this task's top level page-table |