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| author | Vineet Gupta <vgupta@synopsys.com> | 2020-01-15 16:08:12 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-12 08:56:40 +0200 |
| commit | 9febc9153fdb3f7637fb578bc75d9b27930efdb8 (patch) | |
| tree | d0b877d48a41811cd397162c2410679a0be732af /arch/arc/kernel | |
| parent | 417b11d3255c58cc2c33a74cf588d42a8cefbf95 (diff) | |
| download | linux-stable-9febc9153fdb3f7637fb578bc75d9b27930efdb8.tar.gz linux-stable-9febc9153fdb3f7637fb578bc75d9b27930efdb8.tar.bz2 linux-stable-9febc9153fdb3f7637fb578bc75d9b27930efdb8.zip | |
ARC: wireup clone3 syscall
commit bd71c453db91ecb464405411f2821d040f2a0d44 upstream.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arc/kernel')
| -rw-r--r-- | arch/arc/kernel/entry.S | 12 | ||||
| -rw-r--r-- | arch/arc/kernel/process.c | 7 | ||||
| -rw-r--r-- | arch/arc/kernel/sys.c | 1 |
3 files changed, 16 insertions, 4 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index b37ca852a9f7..cef1d3f2656f 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -35,6 +35,18 @@ ENTRY(sys_clone_wrapper) b .Lret_from_system_call END(sys_clone_wrapper) +ENTRY(sys_clone3_wrapper) + SAVE_CALLEE_SAVED_USER + bl @sys_clone3 + DISCARD_CALLEE_SAVED_USER + + GET_CURR_THR_INFO_FLAGS r10 + btst r10, TIF_SYSCALL_TRACE + bnz tracesys_exit + + b .Lret_from_system_call +END(sys_clone3_wrapper) + ENTRY(ret_from_fork) ; when the forked child comes here from the __switch_to function ; r0 has the last task pointer. diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index e1889ce3faf9..bfd4cbe74aa3 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -171,9 +171,8 @@ asmlinkage void ret_from_fork(void); * | user_r25 | * ------------------ <===== END of PAGE */ -int copy_thread(unsigned long clone_flags, - unsigned long usp, unsigned long kthread_arg, - struct task_struct *p) +int copy_thread_tls(unsigned long clone_flags, unsigned long usp, + unsigned long kthread_arg, struct task_struct *p, unsigned long tls) { struct pt_regs *c_regs; /* child's pt_regs */ unsigned long *childksp; /* to unwind out of __switch_to() */ @@ -231,7 +230,7 @@ int copy_thread(unsigned long clone_flags, * set task's userland tls data ptr from 4th arg * clone C-lib call is difft from clone sys-call */ - task_thread_info(p)->thr_ptr = regs->r3; + task_thread_info(p)->thr_ptr = tls; } else { /* Normal fork case: set parent's TLS ptr in child */ task_thread_info(p)->thr_ptr = diff --git a/arch/arc/kernel/sys.c b/arch/arc/kernel/sys.c index fddecc76efb7..1069446bdc58 100644 --- a/arch/arc/kernel/sys.c +++ b/arch/arc/kernel/sys.c @@ -7,6 +7,7 @@ #include <asm/syscalls.h> #define sys_clone sys_clone_wrapper +#define sys_clone3 sys_clone3_wrapper #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), |