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Commit c658ad1b authored by David S. Miller's avatar David S. Miller
Browse files

sparc64: Add syscall tracepoint support. 



Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4d14a459

arch/sparc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/sparc/include/asm/thread_info_64.h

+2 −0
Original line number Diff line number Diff line
@@ -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)

arch/sparc/include/asm/unistd.h

+1 −1
Original line number Diff line number Diff line
@@ -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,

arch/sparc/kernel/entry.S

+1 −1
Original line number Diff line number Diff line
@@ -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

arch/sparc/kernel/ftrace.c

+11 −0
Original line number Diff line number Diff line
@@ -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