diff options
| author |   Helge Deller <deller@gmx.de> | 2016-04-13 22:44:54 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-05-22 21:38:47 +0200 |
| commit | fc79168a7c75423047d60a033dc4844955ccae0b (patch) | |
| tree | 2a2cc2008024f4025965abd54799004176c3dc58 /arch/parisc/include/asm | |
| parent | Merge tag 'for-f2fs-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs (diff) | |
| download | linux-dev-fc79168a7c75423047d60a033dc4844955ccae0b.tar.xz linux-dev-fc79168a7c75423047d60a033dc4844955ccae0b.zip | |
parisc: Add syscall tracepoint support
This patch adds support for the TIF_SYSCALL_TRACEPOINT on the parisc
architecture. Basically, it calls the appropriate tracepoints on syscall
entry and exit.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include/asm')
| -rw-r--r-- | arch/parisc/include/asm/ftrace.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/asm/syscall.h | 9 | ||||
| -rw-r--r-- | arch/parisc/include/asm/thread_info.h | 4 |
3 files changed, 14 insertions, 1 deletions
diff --git a/arch/parisc/include/asm/ftrace.h b/arch/parisc/include/asm/ftrace.h index 24cd81d58d70..d635c6b0269d 100644 --- a/arch/parisc/include/asm/ftrace.h +++ b/arch/parisc/include/asm/ftrace.h @@ -6,6 +6,8 @@ extern void mcount(void); #define MCOUNT_INSN_SIZE 4 +extern unsigned long sys_call_table[]; + extern unsigned long return_address(unsigned int); #define ftrace_return_address(n) return_address(n) diff --git a/arch/parisc/include/asm/syscall.h b/arch/parisc/include/asm/syscall.h index 637ce8d6f375..5e0b4e6bd99d 100644 --- a/arch/parisc/include/asm/syscall.h +++ b/arch/parisc/include/asm/syscall.h @@ -8,6 +8,8 @@ #include <linux/err.h> #include <asm/ptrace.h> +#define NR_syscalls (__NR_Linux_syscalls) + static inline long syscall_get_nr(struct task_struct *tsk, struct pt_regs *regs) { @@ -33,12 +35,19 @@ static inline void syscall_get_arguments(struct task_struct *tsk, args[1] = regs->gr[25]; case 1: args[0] = regs->gr[26]; + case 0: break; default: BUG(); } } +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->gr[28]; +} + static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index e96e693fd58c..7581330ea35b 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -55,6 +55,7 @@ struct thread_info { #define TIF_SINGLESTEP 9 /* single stepping? */ #define TIF_BLOCKSTEP 10 /* branch stepping? */ #define TIF_SECCOMP 11 /* secure computing */ +#define TIF_SYSCALL_TRACEPOINT 12 /* syscall tracepoint instrumentation */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) @@ -66,12 +67,13 @@ struct thread_info { #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) #define _TIF_SECCOMP (1 << TIF_SECCOMP) +#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ _TIF_NEED_RESCHED) #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ - _TIF_SECCOMP) + _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) #ifdef CONFIG_64BIT # ifdef CONFIG_COMPAT |