diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2013-09-06 14:24:48 -0400 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2013-10-29 16:25:16 -0400 |
commit | 1d7bf993e0731b4ac790667c196b2a2d787f95c3 (patch) | |
tree | 235093a4593d6c68b87b5d602a2f1d0dde3ad085 /arch/mips/include/asm | |
parent | 0dfa95aaa817eec8473abf5465eae135b1cf1138 (diff) |
MIPS: ftrace: Add support for syscall tracepoints.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm')
-rw-r--r-- | arch/mips/include/asm/syscall.h | 19 | ||||
-rw-r--r-- | arch/mips/include/asm/thread_info.h | 9 | ||||
-rw-r--r-- | arch/mips/include/asm/unistd.h | 7 |
3 files changed, 32 insertions, 3 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 087df5f26f86..81c89132c59d 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h | |||
@@ -59,6 +59,25 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, | |||
59 | } | 59 | } |
60 | } | 60 | } |
61 | 61 | ||
62 | static inline long syscall_get_return_value(struct task_struct *task, | ||
63 | struct pt_regs *regs) | ||
64 | { | ||
65 | return regs->regs[2]; | ||
66 | } | ||
67 | |||
68 | static inline void syscall_set_return_value(struct task_struct *task, | ||
69 | struct pt_regs *regs, | ||
70 | int error, long val) | ||
71 | { | ||
72 | if (error) { | ||
73 | regs->regs[2] = -error; | ||
74 | regs->regs[7] = -1; | ||
75 | } else { | ||
76 | regs->regs[2] = val; | ||
77 | regs->regs[7] = 0; | ||
78 | } | ||
79 | } | ||
80 | |||
62 | static inline void syscall_get_arguments(struct task_struct *task, | 81 | static inline void syscall_get_arguments(struct task_struct *task, |
63 | struct pt_regs *regs, | 82 | struct pt_regs *regs, |
64 | unsigned int i, unsigned int n, | 83 | unsigned int i, unsigned int n, |
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h index e0c8cf3b16ff..f9b24bfbdbae 100644 --- a/arch/mips/include/asm/thread_info.h +++ b/arch/mips/include/asm/thread_info.h | |||
@@ -116,6 +116,7 @@ static inline struct thread_info *current_thread_info(void) | |||
116 | #define TIF_32BIT_ADDR 23 /* 32-bit address space (o32/n32) */ | 116 | #define TIF_32BIT_ADDR 23 /* 32-bit address space (o32/n32) */ |
117 | #define TIF_FPUBOUND 24 /* thread bound to FPU-full CPU set */ | 117 | #define TIF_FPUBOUND 24 /* thread bound to FPU-full CPU set */ |
118 | #define TIF_LOAD_WATCH 25 /* If set, load watch registers */ | 118 | #define TIF_LOAD_WATCH 25 /* If set, load watch registers */ |
119 | #define TIF_SYSCALL_TRACEPOINT 26 /* syscall tracepoint instrumentation */ | ||
119 | #define TIF_SYSCALL_TRACE 31 /* syscall trace active */ | 120 | #define TIF_SYSCALL_TRACE 31 /* syscall trace active */ |
120 | 121 | ||
121 | #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) | 122 | #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) |
@@ -132,20 +133,22 @@ static inline struct thread_info *current_thread_info(void) | |||
132 | #define _TIF_32BIT_ADDR (1<<TIF_32BIT_ADDR) | 133 | #define _TIF_32BIT_ADDR (1<<TIF_32BIT_ADDR) |
133 | #define _TIF_FPUBOUND (1<<TIF_FPUBOUND) | 134 | #define _TIF_FPUBOUND (1<<TIF_FPUBOUND) |
134 | #define _TIF_LOAD_WATCH (1<<TIF_LOAD_WATCH) | 135 | #define _TIF_LOAD_WATCH (1<<TIF_LOAD_WATCH) |
136 | #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) | ||
135 | 137 | ||
136 | #define _TIF_WORK_SYSCALL_ENTRY (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \ | 138 | #define _TIF_WORK_SYSCALL_ENTRY (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \ |
137 | _TIF_SYSCALL_AUDIT) | 139 | _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT) |
138 | 140 | ||
139 | /* work to do in syscall_trace_leave() */ | 141 | /* work to do in syscall_trace_leave() */ |
140 | #define _TIF_WORK_SYSCALL_EXIT (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \ | 142 | #define _TIF_WORK_SYSCALL_EXIT (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \ |
141 | _TIF_SYSCALL_AUDIT) | 143 | _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT) |
142 | 144 | ||
143 | /* work to do on interrupt/exception return */ | 145 | /* work to do on interrupt/exception return */ |
144 | #define _TIF_WORK_MASK \ | 146 | #define _TIF_WORK_MASK \ |
145 | (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_NOTIFY_RESUME) | 147 | (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_NOTIFY_RESUME) |
146 | /* work to do on any return to u-space */ | 148 | /* work to do on any return to u-space */ |
147 | #define _TIF_ALLWORK_MASK (_TIF_NOHZ | _TIF_WORK_MASK | \ | 149 | #define _TIF_ALLWORK_MASK (_TIF_NOHZ | _TIF_WORK_MASK | \ |
148 | _TIF_WORK_SYSCALL_EXIT) | 150 | _TIF_WORK_SYSCALL_EXIT | \ |
151 | _TIF_SYSCALL_TRACEPOINT) | ||
149 | 152 | ||
150 | /* | 153 | /* |
151 | * We stash processor id into a COP0 register to retrieve it fast | 154 | * We stash processor id into a COP0 register to retrieve it fast |
diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h index 63c9c886173a..4d3b92886665 100644 --- a/arch/mips/include/asm/unistd.h +++ b/arch/mips/include/asm/unistd.h | |||
@@ -14,6 +14,13 @@ | |||
14 | 14 | ||
15 | #include <uapi/asm/unistd.h> | 15 | #include <uapi/asm/unistd.h> |
16 | 16 | ||
17 | #ifdef CONFIG_MIPS32_N32 | ||
18 | #define NR_syscalls (__NR_N32_Linux + __NR_N32_Linux_syscalls) | ||
19 | #elif defined(CONFIG_64BIT) | ||
20 | #define NR_syscalls (__NR_64_Linux + __NR_64_Linux_syscalls) | ||
21 | #else | ||
22 | #define NR_syscalls (__NR_O32_Linux + __NR_O32_Linux_syscalls) | ||
23 | #endif | ||
17 | 24 | ||
18 | #ifndef __ASSEMBLY__ | 25 | #ifndef __ASSEMBLY__ |
19 | 26 | ||