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Commit 469226a4 authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds
Browse files

[PATCH] uml: remove syscall debugging 



Eliminate an unused debug option.

Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 29ac1c21

arch/um/Kconfig.debug

+0 −9
Original line number Diff line number Diff line
@@ -47,13 +47,4 @@ config GCOV 
        If you're involved in UML kernel development and want to use gcov,

        say Y.  If you're unsure, say N.



config SYSCALL_DEBUG

	bool "Enable system call debugging"

	depends on DEBUG_INFO

	help

	This adds some system debugging to UML, including keeping a ring buffer

	with recent system calls and some global and per-task statistics.



	If unsure, say N



endmenu

arch/um/defconfig

+0 −1
Original line number Diff line number Diff line
@@ -526,4 +526,3 @@ CONFIG_FORCED_INLINING=y 
# CONFIG_RCU_TORTURE_TEST is not set

# CONFIG_GPROF is not set

# CONFIG_GCOV is not set
 
# CONFIG_SYSCALL_DEBUG is not set

arch/um/kernel/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -15,7 +15,6 @@ obj-y = config.o exec_kern.o exitcode.o \ 
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o

obj-$(CONFIG_GPROF)	+= gprof_syms.o

obj-$(CONFIG_GCOV)	+= gmon_syms.o

obj-$(CONFIG_SYSCALL_DEBUG) += syscall.o



obj-$(CONFIG_MODE_TT) += tt/

obj-$(CONFIG_MODE_SKAS) += skas/

arch/um/kernel/skas/syscall.c

+0 −7
Original line number Diff line number Diff line
@@ -18,11 +18,7 @@ void handle_syscall(union uml_pt_regs *r) 
	struct pt_regs *regs = container_of(r, struct pt_regs, regs);

	long result;

	int syscall;

#ifdef UML_CONFIG_SYSCALL_DEBUG

  	int index;



  	index = record_syscall_start(UPT_SYSCALL_NR(r));

#endif

	syscall_trace(r, 0);



	current->thread.nsyscalls++;
@@ -44,7 +40,4 @@ void handle_syscall(union uml_pt_regs *r) 
	REGS_SET_SYSCALL_RETURN(r->skas.regs, result);



	syscall_trace(r, 1);

#ifdef UML_CONFIG_SYSCALL_DEBUG

  	record_syscall_end(index, result);

#endif

}

arch/um/kernel/syscall.c

deleted100644 → 0
+0 −36
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)

 * Licensed under the GPL

 */



#include "kern_util.h"

#include "syscall.h"

#include "os.h"



struct {

	int syscall;

	int pid;

	long result;

	unsigned long long start;

	unsigned long long end;

} syscall_record[1024];



int record_syscall_start(int syscall)

{

	int max, index;



	max = sizeof(syscall_record)/sizeof(syscall_record[0]);

	index = next_syscall_index(max);



	syscall_record[index].syscall = syscall;

	syscall_record[index].pid = current_pid();

	syscall_record[index].result = 0xdeadbeef;

	syscall_record[index].start = os_nsecs();

	return(index);

}



void record_syscall_end(int index, long result)

{

	syscall_record[index].result = result;

	syscall_record[index].end = os_nsecs();

}