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| author | Michael Ellerman <mpe@ellerman.id.au> | 2019-01-15 17:37:36 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-22 00:10:15 +1100 |
| commit | 81dac817786263bb44cd5a200a07eff346f78e31 (patch) | |
| tree | fdf3bb06f3b46c9d5350836a669881888bf8b05b /tools/perf/scripts/python/stackcollapse.py | |
| parent | 5c285dd76c7f022dbde3f617efd4f0b8b8ebaeb7 (diff) | |
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 <mpe@ellerman.id.au>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions