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sh: Wire up HAVE_SYSCALL_TRACEPOINTS.

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This is necessary to get ftrace syscall tracing working again.. a fairly
trivial and mechanical change. The one benefit is that this can also be
enabled on sh64, despite not having its own ftrace port.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-09-16 14:30:34 +09:00
parent ea88023b34
commit a74f7e0410
4 changed files with 20 additions and 13 deletions
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1
arch/sh/Kconfig
View File

@ -20,6 +20,7 @@ config SUPERH
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
select HAVE_SYSCALL_TRACEPOINTS
select RTC_LIB
select GENERIC_ATOMIC64
help

8
arch/sh/include/asm/thread_info.h
View File

@ -116,7 +116,7 @@ extern void free_thread_info(struct thread_info *ti);
#define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */
#define TIF_SECCOMP 6 /* secure computing */
#define TIF_NOTIFY_RESUME 7 /* callback before returning to user */
#define TIF_SYSCALL_FTRACE 8 /* for ftrace syscall instrumentation */
#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 18
@ -130,7 +130,7 @@ extern void free_thread_info(struct thread_info *ti);
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
#define _TIF_SYSCALL_FTRACE (1 << TIF_SYSCALL_FTRACE)
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
#define _TIF_USEDFPU (1 << TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_FREEZE (1 << TIF_FREEZE)
@ -144,13 +144,13 @@ extern void free_thread_info(struct thread_info *ti);
/* work to do in syscall trace */
#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
_TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
_TIF_SYSCALL_FTRACE)
_TIF_SYSCALL_TRACEPOINT)
/* work to do on any return to u-space */
#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \
_TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \
_TIF_SINGLESTEP | _TIF_RESTORE_SIGMASK | \
_TIF_NOTIFY_RESUME | _TIF_SYSCALL_FTRACE)
_TIF_NOTIFY_RESUME | _TIF_SYSCALL_TRACEPOINT)
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \

15
arch/sh/kernel/ptrace_32.c
View File

@ -34,7 +34,8 @@
#include <asm/syscalls.h>
#include <asm/fpu.h>
#include <trace/syscall.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
/*
* This routine will get a word off of the process kernel stack.
@ -461,10 +462,8 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
*/
ret = -1L;
#ifdef CONFIG_FTRACE_SYSCALLS
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
ftrace_syscall_enter(regs);
#endif
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->regs[0]);
if (unlikely(current->audit_context))
audit_syscall_entry(audit_arch(), regs->regs[3],
@ -482,10 +481,8 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
regs->regs[0]);
#ifdef CONFIG_FTRACE_SYSCALLS
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
ftrace_syscall_exit(regs);
#endif
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_exit(regs, regs->regs[0]);
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))

9
arch/sh/kernel/ptrace_64.c
View File

@ -40,6 +40,9 @@
#include <asm/syscalls.h>
#include <asm/fpu.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
/* This mask defines the bits of the SR which the user is not allowed to
change, which are everything except S, Q, M, PR, SZ, FR. */
#define SR_MASK (0xffff8cfd)
@ -438,6 +441,9 @@ asmlinkage long long do_syscall_trace_enter(struct pt_regs *regs)
*/
ret = -1LL;
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->regs[9]);
if (unlikely(current->audit_context))
audit_syscall_entry(audit_arch(), regs->regs[1],
regs->regs[2], regs->regs[3],
@ -452,6 +458,9 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(AUDITSC_RESULT(regs->regs[9]),
regs->regs[9]);
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_exit(regs, regs->regs[9]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);
}