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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-09-29 13:29:40 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-10-04 11:26:23 +1100 |
| commit | 064996d62a33ffe10264b5af5dca92d54f60f806 (patch) | |
| tree | b1a8280f35dc949c35e4ac0864a52db688c12b20 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | powerpc/watchdog: Do not trigger SMP crash from touch_nmi_watchdog (diff) | |
| download | linux-064996d62a33ffe10264b5af5dca92d54f60f806.tar.gz linux-064996d62a33ffe10264b5af5dca92d54f60f806.zip | |
powerpc/xmon: Avoid tripping SMP hardlockup watchdog
The SMP hardlockup watchdog cross-checks other CPUs for lockups, which
causes xmon headaches because it's assuming interrupts hard disabled
means no watchdog troubles. Try to improve that by calling
touch_nmi_watchdog() in obvious places where secondaries are spinning.
Also annotate these spin loops with spin_begin/end calls.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions