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| author | Dan Crowell <dcrowell@us.ibm.com> | 2017-09-23 22:24:28 -0500 |
|---|---|---|
| committer | William G. Hoffa <wghoffa@us.ibm.com> | 2018-06-15 13:44:39 -0400 |
| commit | 7cc8294252577238eb99bad42c3bc7dd92f4794d (patch) | |
| tree | 09a73519b9565693ca699a73ec1a21fd17153350 /src/include | |
| parent | 5090c197292cdd0ec4ad8e416020e5229812cb65 (diff) | |
| download | talos-hostboot-7cc8294252577238eb99bad42c3bc7dd92f4794d.tar.gz talos-hostboot-7cc8294252577238eb99bad42c3bc7dd92f4794d.zip | |
Debug improvements for exceptions and OOM hangs
There are two main changes in this commit:
1) Forcing an assert if we cannot allocate pages after
10,000 attempts to yield.
2) Adding a backtrace for a lot of exception paths.
Change-Id: I755ada753b78abed56e553f7c669f0f98ae68700
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/58224
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/arch/ppc.H | 3 | ||||
| -rw-r--r-- | src/include/kernel/misc.H | 16 |
2 files changed, 16 insertions, 3 deletions
diff --git a/src/include/arch/ppc.H b/src/include/arch/ppc.H index f63b5db2f..053661e1d 100644 --- a/src/include/arch/ppc.H +++ b/src/include/arch/ppc.H @@ -434,10 +434,11 @@ ALWAYS_INLINE inline void MAGIC_INSTRUCTION(int _n) { register int n = _n; + isync(); asm volatile("rlwimi %0,%0,0,%1,%2" \ :: "i" (((n) >> 8) & 0x1f), \ "i" (((n) >> 4) & 0xf), \ - "i" ((((n) >> 0) & 0xf) | 16)); + "i" ((((n) >> 0) & 0xf) | 16)); \ } // Arguments to MAGIC_INSTRUCTION(). diff --git a/src/include/kernel/misc.H b/src/include/kernel/misc.H index 4c570423a..26fde6528 100644 --- a/src/include/kernel/misc.H +++ b/src/include/kernel/misc.H @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2011,2017 */ +/* Contributors Listed Below - COPYRIGHT 2011,2018 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -178,7 +178,7 @@ namespace KernelMisc */ void populate_cache_lines(uint64_t* i_start, uint64_t* i_end); - /** @fn set + /** @fn set scratch reg * * @brief Update value of scratch register to specified data. * @@ -195,5 +195,17 @@ namespace KernelMisc */ void updateScratchReg(MMIO_Scratch_Register scratch_addr, uint64_t data); + /** @fn Log backtrace to printk + * + * @brief Collect the backtrace for the given task and print an + * abbreviated version to the printk buffer. + * + * This can be used in task-crash paths for FFDC + * + * @param[in] task_t i_task - Task to operate against, + * if i_task==nullptr then call will use user-space interfaces + */ + void printkBacktrace(task_t* i_task); + }; #endif |
