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81dac81778
linux/arch/powerpc
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Michael Ellerman 81dac81778 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: 529d235a0e ("powerpc: Add a proper syscall for switching endianness")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-02-22 00:10:15 +11:00
..
boot powerpc/dts: Standardize DTS status assignments from "ok" to "okay" 2019-02-22 00:10:15 +11:00
configs powerpc/configs: Add PPC4xx_OCM to ppc40x_defconfig 2018-12-30 14:00:47 +11:00
crypto powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
include powerpc/book3s: Remove pgd/pud/pmd_set() interfaces 2019-02-22 00:10:15 +11:00
kernel powerpc/64: Make sys_switch_endian() traceable 2019-02-22 00:10:15 +11:00
kvm Merge branch 'topic/ppc-kvm' into next 2019-02-22 00:09:56 +11:00
lib Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
math-emu powerpc: math-emu: remove unneeded header search paths 2019-01-14 20:39:27 +11:00
mm powerpc/64s/hash: Fix assert_slb_presence() use of the slbfee. instruction 2019-02-22 00:10:14 +11:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-12-10 18:00:43 -08:00
oprofile Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
perf Merge branch 'fixes' into next 2019-02-19 19:56:26 +11:00
platforms powerpc/pseries: export timebase register sample in lparcfg 2019-02-22 00:10:15 +11:00
purgatory powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
sysdev Merge branch 'topic/dma' into next 2019-02-21 23:15:10 +11:00
tools powerpc/tools/checkpatch: Ignore DT_SPLIT_BINDING_PATCH 2018-12-04 19:45:01 +11:00
xmon powerpc/xmon: fix dump_segments() 2018-12-19 18:56:32 +11:00
Kbuild powerpc: Add -Werror at arch/powerpc level 2018-10-19 00:56:17 +11:00
Kconfig powerpc: drop unused GENERIC_CSUM Kconfig item 2019-02-22 00:10:14 +11:00
Kconfig.debug powerpc: remove redundant 'default n' from Kconfig-s 2018-10-13 22:21:25 +11:00
Makefile powerpc: remove redundant header search path additions 2019-01-14 20:39:27 +11:00
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