It was noticed that the watchdog was causing hangs and lockups in some cases, hammering on the watchdog lock, so I've found a few other improvements and bugs. Thanks to Paulus for finding the problem and fixing the lock primitives (I fixed it a bit differently but the idea is his).
Thanks, Nick Nicholas Piggin (6): powerpc: NMI IPI improve lock primitive powerpc/watchdog: Improve watchdog lock primitive powerpc/watchdog: Moderate touch_nmi_watchdog overhead powerpc/watchdog: Fix final-check recovered case powerpc/watchdog: Fix marking of stuck CPUs powerpc/watchdog: add locking around init/exit functions arch/powerpc/kernel/smp.c | 6 +++--- arch/powerpc/kernel/watchdog.c | 49 +++++++++++++++++++++++++++++++----------- 2 files changed, 39 insertions(+), 16 deletions(-) -- 2.13.3
