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parisc: Add syscall tracepoint support

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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>
This commit is contained in:
Helge Deller
2016-04-13 22:44:54 +02:00
parent f6c658df63
commit fc79168a7c
6 changed files with 28 additions and 1 deletions
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2
arch/parisc/include/asm/ftrace.h
View File

@@ -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)

9
arch/parisc/include/asm/syscall.h
View File

@@ -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)

4
arch/parisc/include/asm/thread_info.h
View File

@@ -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