diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2012-07-13 23:38:17 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-10-29 21:25:01 +0100 |
| commit | 19e2e172f0ed2552793ecef506b00c3fa3421845 (patch) | |
| tree | ca324a14964fd13fd7957c2e30baa196cee1e998 /arch/mips/kernel | |
| parent | 403342a82d7959ad76210778cfcd7e26f7dd98cd (diff) | |
MIPS: Provide arch_syscall_addr.
The generic version is wrong for MIPS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/ftrace.c | 33 |
2 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 4bbece9b3eb..81773a4508f 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -35,6 +35,7 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_MODULES) += mips_ksyms.o module.o obj-$(CONFIG_MODULES_USE_ELF_RELA) += module-rela.o +obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o obj-$(CONFIG_CPU_R4K_FPU) += r4k_fpu.o r4k_switch.o diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c index dba90ec0dc3..6e022c44f44 100644 --- a/arch/mips/kernel/ftrace.c +++ b/arch/mips/kernel/ftrace.c @@ -11,11 +11,14 @@ #include <linux/uaccess.h> #include <linux/init.h> #include <linux/ftrace.h> +#include <linux/syscalls.h> #include <asm/asm.h> #include <asm/asm-offsets.h> #include <asm/cacheflush.h> +#include <asm/syscall.h> #include <asm/uasm.h> +#include <asm/unistd.h> #include <asm-generic/sections.h> @@ -364,3 +367,33 @@ out: WARN_ON(1); } #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ + +#ifdef CONFIG_FTRACE_SYSCALLS + +#ifdef CONFIG_32BIT +unsigned long __init arch_syscall_addr(int nr) +{ + return (unsigned long)sys_call_table[nr - __NR_O32_Linux]; +} +#endif + +#ifdef CONFIG_64BIT + +unsigned long __init arch_syscall_addr(int nr) +{ +#ifdef CONFIG_MIPS32_N32 + if (nr >= __NR_N32_Linux && nr <= __NR_N32_Linux + __NR_N32_Linux_syscalls) + return (unsigned long)sysn32_call_table[(nr - __NR_N32_Linux) * 2]; +#endif + if (nr >= __NR_64_Linux && nr <= __NR_64_Linux + __NR_64_Linux_syscalls) + return (unsigned long)sys_call_table[nr - __NR_64_Linux]; +#ifdef CONFIG_MIPS32_O32 + if (nr >= __NR_O32_Linux && nr <= __NR_O32_Linux + __NR_O32_Linux_syscalls) + return (unsigned long)sys32_call_table[nr - __NR_O32_Linux]; +#endif + + return (unsigned long) &sys_ni_syscall; +} +#endif + +#endif /* CONFIG_FTRACE_SYSCALLS */ |