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tracing/syscalls: Make arch_syscall_addr weak

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Some architectures use non-trivial system call tables and will not work
with the generic arch_syscall_addr code. For example, PowerPC64 uses a
table of twin long longs.

This patch makes the generic arch_syscall_addr weak to allow
architectures with non-trivial system call tables to override it.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-4-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Ian Munsie
2011-02-03 14:27:22 +11:00
committed by Steven Rostedt
parent 3773b389b6
commit c763ba06bd
2 changed files with 4 additions and 1 deletions
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2
kernel/trace/trace_syscalls.c
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@@ -446,7 +446,7 @@ int init_syscall_trace(struct ftrace_event_call *call)
return id;
}
unsigned long __init arch_syscall_addr(int nr)
unsigned long __init __weak arch_syscall_addr(int nr)
{
return (unsigned long)sys_call_table[nr];
}