From 81dac817786263bb44cd5a200a07eff346f78e31 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 15 Jan 2019 17:37:36 +1100 Subject: powerpc/64: Make sys_switch_endian() traceable We weren't using SYSCALL_DEFINE for sys_switch_endian(), which means it wasn't able to be traced by CONFIG_FTRACE_SYSCALLS. By using the macro we create the right metadata and the syscall is visible. eg: # cd /sys/kernel/debug/tracing # echo 1 | tee events/syscalls/sys_*_switch_endian/enable # ~/switch_endian_test # cat trace ... switch_endian_t-3604 [009] .... 315.175164: sys_switch_endian() switch_endian_t-3604 [009] .... 315.175167: sys_switch_endian -> 0x5555aaaa5555aaaa switch_endian_t-3604 [009] .... 315.175169: sys_switch_endian() switch_endian_t-3604 [009] .... 315.175169: sys_switch_endian -> 0x5555aaaa5555aaaa Fixes: 529d235a0e19 ("powerpc: Add a proper syscall for switching endianness") Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/syscalls.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/kernel/syscalls.c') diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c index e6982ab21816..e52a8878c2fb 100644 --- a/arch/powerpc/kernel/syscalls.c +++ b/arch/powerpc/kernel/syscalls.c @@ -123,7 +123,7 @@ long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low, (u64)len_high << 32 | len_low, advice); } -long sys_switch_endian(void) +SYSCALL_DEFINE0(switch_endian) { struct thread_info *ti; -- cgit