diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2021-04-30 17:53:38 -0500 |
---|---|---|
committer | Eric W. Biederman <ebiederm@xmission.com> | 2021-07-23 13:14:13 -0500 |
commit | c7fff9288dce1ee5fa9de8d656e09cc8e0e3281b (patch) | |
tree | 57b4e87c5d1946b65dac114654d4972d60cff1bd | |
parent | 7de5f68d497cbc700c4a28cc037dd61f00e452e8 (diff) | |
download | linux-c7fff9288dce1ee5fa9de8d656e09cc8e0e3281b.tar.bz2 |
signal: Remove the generic __ARCH_SI_TRAPNO support
Now that __ARCH_SI_TRAPNO is no longer set by any architecture remove
all of the code it enabled from the kernel.
On alpha and sparc a more explict approach of using
send_sig_fault_trapno or force_sig_fault_trapno in the very limited
circumstances where si_trapno was set to a non-zero value.
The generic support that is being removed always set si_trapno on all
fault signals. With only SIGILL ILL_ILLTRAP on sparc and SIGFPE and
SIGTRAP TRAP_UNK on alpla providing si_trapno values asking all senders
of fault signals to provide an si_trapno value does not make sense.
Making si_trapno an ordinary extension of the fault siginfo layout has
enabled the architecture generic implementation of SIGTRAP TRAP_PERF,
and enables other faulting signals to grow architecture generic
senders as well.
v1: https://lkml.kernel.org/r/m18s4zs7nu.fsf_-_@fess.ebiederm.org
v2: https://lkml.kernel.org/r/20210505141101.11519-8-ebiederm@xmission.com
Link: https://lkml.kernel.org/r/87bl73xx6x.fsf_-_@disp2133
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
-rw-r--r-- | arch/mips/include/uapi/asm/siginfo.h | 2 | ||||
-rw-r--r-- | include/linux/sched/signal.h | 8 | ||||
-rw-r--r-- | kernel/signal.c | 14 |
3 files changed, 0 insertions, 24 deletions
diff --git a/arch/mips/include/uapi/asm/siginfo.h b/arch/mips/include/uapi/asm/siginfo.h index c34c7eef0a1c..8cb8bd061a68 100644 --- a/arch/mips/include/uapi/asm/siginfo.h +++ b/arch/mips/include/uapi/asm/siginfo.h @@ -10,9 +10,7 @@ #ifndef _UAPI_ASM_SIGINFO_H #define _UAPI_ASM_SIGINFO_H - #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int)) -#undef __ARCH_SI_TRAPNO /* exception code needs to fill this ... */ #define __ARCH_HAS_SWAPPED_SIGINFO diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h index 6657184cef07..928e0025d358 100644 --- a/include/linux/sched/signal.h +++ b/include/linux/sched/signal.h @@ -298,11 +298,6 @@ static inline void kernel_signal_stop(void) schedule(); } -#ifdef __ARCH_SI_TRAPNO -# define ___ARCH_SI_TRAPNO(_a1) , _a1 -#else -# define ___ARCH_SI_TRAPNO(_a1) -#endif #ifdef __ia64__ # define ___ARCH_SI_IA64(_a1, _a2, _a3) , _a1, _a2, _a3 #else @@ -310,14 +305,11 @@ static inline void kernel_signal_stop(void) #endif int force_sig_fault_to_task(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr) , struct task_struct *t); int force_sig_fault(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr)); int send_sig_fault(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr) , struct task_struct *t); diff --git a/kernel/signal.c b/kernel/signal.c index ae06a424aa72..2181423e562a 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1666,7 +1666,6 @@ void force_sigsegv(int sig) } int force_sig_fault_to_task(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr) , struct task_struct *t) { @@ -1677,9 +1676,6 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr info.si_errno = 0; info.si_code = code; info.si_addr = addr; -#ifdef __ARCH_SI_TRAPNO - info.si_trapno = trapno; -#endif #ifdef __ia64__ info.si_imm = imm; info.si_flags = flags; @@ -1689,16 +1685,13 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr } int force_sig_fault(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr)) { return force_sig_fault_to_task(sig, code, addr - ___ARCH_SI_TRAPNO(trapno) ___ARCH_SI_IA64(imm, flags, isr), current); } int send_sig_fault(int sig, int code, void __user *addr - ___ARCH_SI_TRAPNO(int trapno) ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr) , struct task_struct *t) { @@ -1709,9 +1702,6 @@ int send_sig_fault(int sig, int code, void __user *addr info.si_errno = 0; info.si_code = code; info.si_addr = addr; -#ifdef __ARCH_SI_TRAPNO - info.si_trapno = trapno; -#endif #ifdef __ia64__ info.si_imm = imm; info.si_flags = flags; @@ -3283,10 +3273,6 @@ enum siginfo_layout siginfo_layout(unsigned sig, int si_code) ((sig == SIGFPE) || ((sig == SIGTRAP) && (si_code == TRAP_UNK)))) layout = SIL_FAULT_TRAPNO; -#ifdef __ARCH_SI_TRAPNO - else if (layout == SIL_FAULT) - layout = SIL_FAULT_TRAPNO; -#endif } else if (si_code <= NSIGPOLL) layout = SIL_POLL; |