xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[S390] add TIF_SYSCALL thread flag

Browse Source 
Add an explicit TIF_SYSCALL bit that indicates if a task is inside
a system call. The svc_code in the pt_regs structure is now only
valid if TIF_SYSCALL is set. With this definition TIF_RESTART_SVC
can be replaced with TIF_SYSCALL. Overall do_signal is a bit more
readable and it saves a few lines of code.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2011-10-30 15:16:49 +01:00
parent ccf45cafb0
commit b6ef5bb3d9
7 changed files with 69 additions and 94 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/s390/kernel/compat_signal.c
View File

@@ -342,7 +342,7 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
return err;
restore_fp_regs(&current->thread.fp_regs);
regs->svc_code = 0; /* disable syscall checks */
clear_thread_flag(TIF_SYSCALL); /* No longer in a system call */
return 0;
}