From 85bd2fddd68e757da8e1af98f857f61a3c9ce647 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 26 Feb 2007 15:33:52 +0100 Subject: kbuild: fix section mismatch check for vmlinux vmlinux does not contain relocation entries which is used by the section mismatch checks. Reported by: Atsushi Nemoto Use the individual objects as inputs to overcome this limitation. In modpost check the .o files and skip non-ELF files. Signed-off-by: Sam Ravnborg --- Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'Makefile') diff --git a/Makefile b/Makefile index d970cb16545a..5a774cbf6bfa 100644 --- a/Makefile +++ b/Makefile @@ -603,6 +603,7 @@ vmlinux-init := $(head-y) $(init-y) vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) vmlinux-all := $(vmlinux-init) $(vmlinux-main) vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds +export KBUILD_VMLINUX_OBJS := $(vmlinux-all) # Rule to link vmlinux - also used during CONFIG_KALLSYMS # May be overridden by arch/$(ARCH)/Makefile -- cgit v1.2.3 From 2462566f21a5ecdb2a7e75e09db90ff175b1f748 Mon Sep 17 00:00:00 2001 From: Uwe Zeisberger Date: Thu, 5 Oct 2006 16:24:45 +0200 Subject: kbuild: add a missing slash in the comments Signed-off-by: Uwe Zeisberger Signed-off-by: Sam Ravnborg --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 5a774cbf6bfa..001a473234f5 100644 --- a/Makefile +++ b/Makefile @@ -576,7 +576,7 @@ libs-y := $(libs-y1) $(libs-y2) # --------------------------------------------------------------------------- # vmlinux is built from the objects selected by $(vmlinux-init) and # $(vmlinux-main). Most are built-in.o files from top-level directories -# in the kernel tree, others are specified in arch/$(ARCH)Makefile. +# in the kernel tree, others are specified in arch/$(ARCH)/Makefile. # Ordering when linking is important, and $(vmlinux-init) must be first. # # vmlinux -- cgit v1.2.3 From dd7e54ade8f515ec38d5dc2129705352e2296f8e Mon Sep 17 00:00:00 2001 From: Don Mullis Date: Thu, 4 Jan 2007 10:14:52 -0800 Subject: kbuild: move tags from ARCH and include/ ahead of drivers Move tags extracted from the ARCH and include/ sub-trees ahead of those from device drivers, so that the former will appear first during searches. Saves user time during interactive searches for certain patterns that happen to find unwanted matches in driver files. Example in emacs: "M-x find-tag PAGE_SIZE" "M-1 M-." (repeated until definition from asm-i386/page.h appears) Signed-off-by: Don Mullis Signed-off-by: Sam Ravnborg --- Makefile | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 001a473234f5..92cbc05c31ad 100644 --- a/Makefile +++ b/Makefile @@ -1278,10 +1278,7 @@ endif ALLSOURCE_ARCHS := $(ARCH) define find-sources - ( find $(__srctree) $(RCS_FIND_IGNORE) \ - \( -name include -o -name arch \) -prune -o \ - -name $1 -print; \ - for ARCH in $(ALLSOURCE_ARCHS) ; do \ + ( for ARCH in $(ALLSOURCE_ARCHS) ; do \ find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ -name $1 -print; \ done ; \ @@ -1295,7 +1292,11 @@ define find-sources -name $1 -print; \ done ; \ find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ - -name $1 -print ) + -name $1 -print; \ + find $(__srctree) $(RCS_FIND_IGNORE) \ + \( -name include -o -name arch \) -prune -o \ + -name $1 -print; \ + ) endef define all-sources -- cgit v1.2.3 From c53aeca059c4d2108335810fba6ba89ab6a944dd Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Tue, 27 Mar 2007 22:50:29 +0200 Subject: kbuild: complain about missing system calls MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Most system calls seems to get added to i386 first. This patch automatically generates a warning for any new system call which is implemented on i386 but not the architecture currently being compiled. On PowerPC at the moment, for example, it results in these warnings: init/missing_syscalls.h:935:3: warning: #warning syscall sync_file_range not implemented init/missing_syscalls.h:947:3: warning: #warning syscall getcpu not implemented init/missing_syscalls.h:950:3: warning: #warning syscall epoll_pwait not implemented The file scripts/checksyscalls.sh list a number of legacy system calls that are ignored because they only makes sense on i386 systems. Other contributors to this patch are Russell King and Stéphane Jourdois Signed-off-by: David Woodhouse Signed-off-by: Sam Ravnborg --- Kbuild | 11 +++++ Makefile | 1 + scripts/checksyscalls.sh | 118 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 130 insertions(+) create mode 100755 scripts/checksyscalls.sh (limited to 'Makefile') diff --git a/Kbuild b/Kbuild index 0451f69353ba..163f8cb020a4 100644 --- a/Kbuild +++ b/Kbuild @@ -2,6 +2,7 @@ # Kbuild for top-level directory of the kernel # This file takes care of the following: # 1) Generate asm-offsets.h +# 2) Check for missing system calls ##### # 1) Generate asm-offsets.h @@ -46,3 +47,13 @@ $(obj)/$(offsets-file): arch/$(ARCH)/kernel/asm-offsets.s Kbuild $(Q)mkdir -p $(dir $@) $(call cmd,offsets) +##### +# 2) Check for missing system calls +# + +quiet_cmd_syscalls = CALL $< + cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) + +PHONY += missing-syscalls +missing-syscalls: scripts/checksyscalls.sh FORCE + $(call cmd,syscalls) diff --git a/Makefile b/Makefile index 92cbc05c31ad..2910c2d5ee9f 100644 --- a/Makefile +++ b/Makefile @@ -856,6 +856,7 @@ archprepare: prepare1 scripts_basic prepare0: archprepare FORCE $(Q)$(MAKE) $(build)=. + $(Q)$(MAKE) $(build)=. missing-syscalls # All the preparing.. prepare: prepare0 diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh new file mode 100755 index 000000000000..f98171f5a3df --- /dev/null +++ b/scripts/checksyscalls.sh @@ -0,0 +1,118 @@ +#!/bin/sh +# +# Check if current architecture are missing any function calls compared +# to i386. +# i386 define a number of legacy system calls that are i386 specific +# and listed below so they are ignored. +# +# Usage: +# syscallchk gcc gcc-options +# + +ignore_list() { +cat << EOF +#include +#include + +/* System calls for 32-bit kernels only */ +#if BITS_PER_LONG == 64 +#define __IGNORE_sendfile64 +#define __IGNORE_ftruncate64 +#define __IGNORE_truncate64 +#define __IGNORE_stat64 +#define __IGNORE_lstat64 +#define __IGNORE_fstat64 +#define __IGNORE_fcntl64 +#define __IGNORE_fadvise64_64 +#define __IGNORE_fstatat64 +#define __IGNORE_fstatfs64 +#define __IGNORE_statfs64 +#endif + +/* i386-specific or historical system calls */ +#define __IGNORE_break +#define __IGNORE_stty +#define __IGNORE_gtty +#define __IGNORE_ftime +#define __IGNORE_prof +#define __IGNORE_lock +#define __IGNORE_mpx +#define __IGNORE_ulimit +#define __IGNORE_profil +#define __IGNORE_ioperm +#define __IGNORE_iopl +#define __IGNORE_idle +#define __IGNORE_modify_ldt +#define __IGNORE_ugetrlimit +#define __IGNORE_mmap2 +#define __IGNORE_vm86 +#define __IGNORE_vm86old +#define __IGNORE_set_thread_area +#define __IGNORE_get_thread_area +#define __IGNORE_madvise1 +#define __IGNORE_oldstat +#define __IGNORE_oldfstat +#define __IGNORE_oldlstat +#define __IGNORE_oldolduname +#define __IGNORE_olduname +#define __IGNORE_umount2 +#define __IGNORE_umount +#define __IGNORE_waitpid +#define __IGNORE_stime +#define __IGNORE_nice +#define __IGNORE_signal +#define __IGNORE_sigaction +#define __IGNORE_sgetmask +#define __IGNORE_sigsuspend +#define __IGNORE_sigpending +#define __IGNORE_ssetmask +#define __IGNORE_readdir +#define __IGNORE_socketcall +#define __IGNORE_ipc +#define __IGNORE_sigreturn +#define __IGNORE_sigprocmask +#define __IGNORE_bdflush +#define __IGNORE__llseek +#define __IGNORE__newselect +#define __IGNORE_create_module +#define __IGNORE_delete_module +#define __IGNORE_query_module +#define __IGNORE_get_kernel_syms +/* ... including the "new" 32-bit uid syscalls */ +#define __IGNORE_lchown32 +#define __IGNORE_getuid32 +#define __IGNORE_getgid32 +#define __IGNORE_geteuid32 +#define __IGNORE_getegid32 +#define __IGNORE_setreuid32 +#define __IGNORE_setregid32 +#define __IGNORE_getgroups32 +#define __IGNORE_setgroups32 +#define __IGNORE_fchown32 +#define __IGNORE_setresuid32 +#define __IGNORE_getresuid32 +#define __IGNORE_setresgid32 +#define __IGNORE_getresgid32 +#define __IGNORE_chown32 +#define __IGNORE_setuid32 +#define __IGNORE_setgid32 +#define __IGNORE_setfsuid32 +#define __IGNORE_setfsgid32 + +/* Unmerged syscalls for AFS, STREAMS, etc. */ +#define __IGNORE_afs_syscall +#define __IGNORE_getpmsg +#define __IGNORE_putpmsg +#define __IGNORE_vserver +EOF +} + +syscall_list() { +sed -n -e '/^\#define/ { s/[^_]*__NR_\([^[:space:]]*\).*/\ +\#if !defined \(__NR_\1\) \&\& !defined \(__IGNORE_\1\)\ +\#warning syscall \1 not implemented\ +\#endif/p }' $1 +} + +(ignore_list && syscall_list ${srctree}/include/asm-i386/unistd.h) | \ +$* -E -x c - > /dev/null -- cgit v1.2.3