talos-skiboot/core/test/run-timer.c, branch master

lock: Add additional lock auditing code

2017-12-21T04:15:36+00:00

Keep track of lock owner name and replace lock_depth counter with a per-cpu list of locks held by the cpu. This allows us to print the actual locks held in case we hit the (in)famous message about opal_pollers being run with a lock held. It also allows us to warn (and drop them) if locks are still held when returning to the OS or completing a scheduled job. Signed-off-by: Benjamin Herrenschmidt Reviewed-by: Nicholas Piggin [stewart: fix unit tests] Signed-off-by: Stewart Smith

Convert important polling loops to spin at lowest SMT priority

2017-06-06T10:49:06+00:00

The pattern of calling cpu_relax() inside a polling loop does not suit the powerpc SMT priority instructions. Prefrred is to set a low priority then spin until break condition is reached, then restore priority. Signed-off-by: Nicholas Piggin [stewart@linux.vnet.ibm.com: fixup lpc-uart wait_tx_room() and unit test] Signed-off-by: Stewart Smith

Timebase quirk for slow simulators like AWAN and SIMICS

2016-07-06T09:30:48+00:00

This will internally pretend the timebase is running 1000 times slower, which reduces some otherwise really terrible delays in some simulators. Signed-off-by: Benjamin Herrenschmidt Acked-by: Michael Neuling [stewart@linux.vnet.ibm.com: move cfam_chipid cleanup into own patch] Signed-off-by: Stewart Smith

slw/timer: SBE based timer support

2015-09-11T06:42:17+00:00

Recent HostBoot & SBE firmware provide a HW timer facility that can be used to implement OPAL timers and thus limit the reliance on the Linux heartbeat. This implements support for it. The side effect is that i2c from Centaurs is now usable. Signed-off-by: Benjamin Herrenschmidt [stewart@linux.vnet.ibm.com: fix run-timer unit test] Signed-off-by: Stewart Smith

timer: Pass current timer to timer callbacks

2015-09-11T06:32:37+00:00

The caller usually has it and it avoids additional mftb() which can be expensive. Signed-off-by: Benjamin Herrenschmidt [stewart@linux.vnet.ibm.com: fix run-timer unit test] Signed-off-by: Stewart Smith

core/test: Fix timer test case

2014-11-21T21:25:13+00:00

Commit b54d1a8 broke timer test case. core/test/run-timer.c: In function ‘main’: core/test/run-timer.c:52:3: error: too few arguments to function ‘check_timers’ check_timers(); ^ In file included from core/test/run-timer.c:16:0: core/test/../timer.c:201:6: note: declared here void check_timers(bool from_interrupt) ^ make: *** [core/test/run-timer] Error 1 This patch fixes above compilation issue. Signed-off-by: Vasant Hegde Signed-off-by: Benjamin Herrenschmidt

timer: Add scheduled timer facility

2014-11-07T04:54:22+00:00

For now running off the event pollers, that will improve once we get delayed interrupts from the SLW Signed-off-by: Benjamin Herrenschmidt