diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 55d13b589ff3e..5a27a6fd3a1c4 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -29,6 +29,7 @@ config XTENSA select HAVE_OPROFILE select HAVE_PERF_EVENTS select HAVE_STACKPROTECTOR + select HAVE_SYSCALL_TRACEPOINTS select IRQ_DOMAIN select MODULES_USE_ELF_RELA select PERF_USE_VMALLOC diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h index f1b1de526d1d1..62a58d2567e94 100644 --- a/arch/xtensa/include/asm/ptrace.h +++ b/arch/xtensa/include/asm/ptrace.h @@ -102,6 +102,11 @@ struct pt_regs { #define user_stack_pointer(regs) ((regs)->areg[1]) +static inline unsigned long regs_return_value(struct pt_regs *regs) +{ + return regs->areg[2]; +} + #else /* __ASSEMBLY__ */ # include diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h index e47470ec8ea8d..a168bf81c7f47 100644 --- a/arch/xtensa/include/asm/syscall.h +++ b/arch/xtensa/include/asm/syscall.h @@ -19,6 +19,9 @@ static inline int syscall_get_arch(void) return AUDIT_ARCH_XTENSA; } +typedef void (*syscall_t)(void); +extern syscall_t sys_call_table[]; + static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h index c823dddfebdfe..f333f10a7650d 100644 --- a/arch/xtensa/include/asm/thread_info.h +++ b/arch/xtensa/include/asm/thread_info.h @@ -106,6 +106,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SIGPENDING 1 /* signal pending */ #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ #define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */ +#define TIF_SYSCALL_TRACEPOINT 4 /* syscall tracepoint instrumentation */ #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */ #define TIF_NOTIFY_RESUME 7 /* callback before returning to user */ @@ -115,8 +116,10 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SIGPENDING (1< #include +#define CREATE_TRACE_POINTS +#include + #include #include #include @@ -545,12 +548,17 @@ void do_syscall_trace_enter(struct pt_regs *regs) tracehook_report_syscall_entry(regs)) regs->syscall = NO_SYSCALL; + if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) + trace_sys_enter(regs, syscall_get_nr(current, regs)); } void do_syscall_trace_leave(struct pt_regs *regs) { int step; + if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) + trace_sys_exit(regs, regs_return_value(regs)); + step = test_thread_flag(TIF_SINGLESTEP); if (step || test_thread_flag(TIF_SYSCALL_TRACE)) diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c index b8240e08f1f18..2c415fce6801a 100644 --- a/arch/xtensa/kernel/syscall.c +++ b/arch/xtensa/kernel/syscall.c @@ -28,8 +28,6 @@ #include #include -typedef void (*syscall_t)(void); - syscall_t sys_call_table[__NR_syscalls] /* FIXME __cacheline_aligned */= { [0 ... __NR_syscalls - 1] = (syscall_t)&sys_ni_syscall,