diff options
| author | Peter Zijlstra <[email protected]> | 2017-05-24 08:52:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-05-24 09:10:00 +0200 |
| commit | 45aea321678856687927c53972321ebfab77759a (patch) | |
| tree | 7e82415526d67107739c41076bc329e63d096c44 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 5c3c2ea6887176c5ae812c9f0350ff65b10e9485 (diff) | |
sched/clock: Fix early boot preempt assumption in __set_sched_clock_stable()
The more strict early boot preemption warnings found that
__set_sched_clock_stable() was incorrectly assuming we'd still be
running on a single CPU:
BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
caller is debug_smp_processor_id+0x1c/0x1e
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.12.0-rc2-00108-g1c3c5ea #1
Call Trace:
dump_stack+0x110/0x192
check_preemption_disabled+0x10c/0x128
? set_debug_rodata+0x25/0x25
debug_smp_processor_id+0x1c/0x1e
sched_clock_init_late+0x27/0x87
[...]
Fix it by disabling IRQs.
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions