@@ -43,6 +43,7 @@ config SPARC64
select HAVE_SYSCALL_WRAPPERS
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
+ select HAVE_SYSCALL_TRACEPOINTS
select USE_GENERIC_SMP_HELPERS if SMP
select RTC_DRV_CMOS
select RTC_DRV_BQ4802
@@ -227,6 +227,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
/* flag bit 8 is available */
#define TIF_SECCOMP 9 /* secure computing */
#define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */
+#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
/* flag bit 11 is available */
/* NOTE: Thread flags >= 12 should be ones we have no interest
* in using in assembly, else we can't use the mask as
@@ -246,6 +247,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_32BIT (1<<TIF_32BIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
+#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_FREEZE (1<<TIF_FREEZE)
@@ -398,7 +398,7 @@
#define __NR_perf_event_open 327
#define __NR_recvmmsg 328
-#define NR_SYSCALLS 329
+#define NR_syscalls 329
#ifdef __32bit_syscall_numbers__
/* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
@@ -1294,7 +1294,7 @@ linux_sparc_syscall:
sethi %hi(PSR_SYSCALL), %l4
or %l0, %l4, %l0
/* Direct access to user regs, must faster. */
- cmp %g1, NR_SYSCALLS
+ cmp %g1, NR_syscalls
bgeu linux_sparc_ni_syscall
sll %g1, 2, %l4
ld [%l7 + %l4], %l7
@@ -4,6 +4,7 @@
#include <linux/percpu.h>
#include <linux/init.h>
#include <linux/list.h>
+#include <trace/syscall.h>
#include <asm/ftrace.h>
@@ -91,3 +92,13 @@ int __init ftrace_dyn_arch_init(void *data)
}
#endif
+#ifdef CONFIG_FTRACE_SYSCALLS
+
+extern unsigned int sys_call_table[];
+
+unsigned long __init arch_syscall_addr(int nr)
+{
+ return (unsigned long)sys_call_table[nr];
+}
+
+#endif
@@ -23,6 +23,7 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/tracehook.h>
+#include <trace/syscall.h>
#include <linux/compat.h>
#include <linux/elf.h>
@@ -37,6 +38,9 @@
#include <asm/cpudata.h>
#include <asm/cacheflush.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/syscalls.h>
+
#include "entry.h"
/* #define ALLOW_INIT_TRACING */
@@ -1059,6 +1063,9 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
if (test_thread_flag(TIF_SYSCALL_TRACE))
ret = tracehook_report_syscall_entry(regs);
+ if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
+ trace_sys_enter(regs, regs->u_regs[UREG_G1]);
+
if (unlikely(current->audit_context) && !ret)
audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
AUDIT_ARCH_SPARC :
@@ -1084,6 +1091,9 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(result, regs->u_regs[UREG_I0]);
}
+ if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
+ trace_sys_exit(regs, regs->u_regs[UREG_G1]);
+
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);
}
@@ -62,7 +62,7 @@ sys32_rt_sigreturn:
#endif
.align 32
1: ldx [%g6 + TI_FLAGS], %l5
- andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+ andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
be,pt %icc, rtrap
nop
call syscall_trace_leave
@@ -187,7 +187,7 @@ linux_syscall_trace:
.globl linux_sparc_syscall32
linux_sparc_syscall32:
/* Direct access to user regs, much faster. */
- cmp %g1, NR_SYSCALLS ! IEU1 Group
+ cmp %g1, NR_syscalls ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
srl %i0, 0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
@@ -198,7 +198,7 @@ linux_sparc_syscall32:
srl %i5, 0, %o5 ! IEU1
srl %i2, 0, %o2 ! IEU0 Group
- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+ andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
bne,pn %icc, linux_syscall_trace32 ! CTI
mov %i0, %l5 ! IEU1
call %l7 ! CTI Group brk forced
@@ -210,7 +210,7 @@ linux_sparc_syscall32:
.globl linux_sparc_syscall
linux_sparc_syscall:
/* Direct access to user regs, much faster. */
- cmp %g1, NR_SYSCALLS ! IEU1 Group
+ cmp %g1, NR_syscalls ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
mov %i0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
@@ -221,7 +221,7 @@ linux_sparc_syscall:
mov %i3, %o3 ! IEU1
mov %i4, %o4 ! IEU0 Group
- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+ andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
bne,pn %icc, linux_syscall_trace ! CTI Group
mov %i0, %l5 ! IEU0
2: call %l7 ! CTI Group brk forced
@@ -245,7 +245,7 @@ ret_sys_call:
cmp %o0, -ERESTART_RESTARTBLOCK
bgeu,pn %xcc, 1f
- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
+ andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6
80:
/* System call success, clear Carry condition code. */
andn %g3, %g2, %g3
@@ -260,7 +260,7 @@ ret_sys_call:
/* System call failure, set Carry condition code.
* Also, get abs(errno) to return to the process.
*/
- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
+ andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6
sub %g0, %o0, %o0
or %g3, %g2, %g3
stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
Signed-off-by: David S. Miller <davem@davemloft.net> --- arch/sparc/Kconfig | 1 + arch/sparc/include/asm/thread_info_64.h | 2 ++ arch/sparc/include/asm/unistd.h | 2 +- arch/sparc/kernel/entry.S | 2 +- arch/sparc/kernel/ftrace.c | 11 +++++++++++ arch/sparc/kernel/ptrace_64.c | 10 ++++++++++ arch/sparc/kernel/syscalls.S | 14 +++++++------- 7 files changed, 33 insertions(+), 9 deletions(-)