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| author | Mike Frysinger <vapier@gentoo.org> | 2010-01-26 04:40:03 -0500 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-02-17 13:07:21 +0100 |
| commit | e7b8e675d9c71b868b66f62f725a948047514719 (patch) | |
| tree | 77877e2470148dc47653408c4b624734a8f14239 /arch/s390 | |
| parent | ea2c68a08fedb5053ba312d661e47df9f4d72411 (diff) | |
| download | linux-e7b8e675d9c71b868b66f62f725a948047514719.tar.bz2 | |
tracing: Unify arch_syscall_addr() implementations
Most implementations of arch_syscall_addr() are the same, so create a
default version in common code and move the one piece that differs (the
syscall table) to asm/syscall.h. New arch ports don't have to waste
time copying & pasting this simple function.
The s390/sparc versions need to be different, so document why.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1264498803-17278-1-git-send-email-vapier@gentoo.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/syscall.h | 7 | ||||
| -rw-r--r-- | arch/s390/kernel/ftrace.c | 10 |
2 files changed, 7 insertions, 10 deletions
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h index e0a73d3eb837..8429686951f9 100644 --- a/arch/s390/include/asm/syscall.h +++ b/arch/s390/include/asm/syscall.h @@ -15,6 +15,13 @@ #include <linux/sched.h> #include <asm/ptrace.h> +/* + * The syscall table always contains 32 bit pointers since we know that the + * address of the function to be called is (way) below 4GB. So the "int" + * type here is what we want [need] for both 32 bit and 64 bit systems. + */ +extern const unsigned int sys_call_table[]; + static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c index 5a82bc68193e..9e69449e77ad 100644 --- a/arch/s390/kernel/ftrace.c +++ b/arch/s390/kernel/ftrace.c @@ -200,13 +200,3 @@ out: return parent; } #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ - -#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 |