diff options
Diffstat (limited to 'pk/trace/pk_trace_core.c')
| -rw-r--r-- | pk/trace/pk_trace_core.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/pk/trace/pk_trace_core.c b/pk/trace/pk_trace_core.c deleted file mode 100644 index 429679db..00000000 --- a/pk/trace/pk_trace_core.c +++ /dev/null @@ -1,119 +0,0 @@ -//----------------------------------------------------------------------------- -// *! (C) Copyright International Business Machines Corp. 2014 -// *! All Rights Reserved -- Property of IBM -// *! *** IBM Confidential *** -//----------------------------------------------------------------------------- - -/// \file pk_trace_core.c -/// \brief PK Trace core data and code. -/// -/// This file includes the minimal code/data required to do minimal tracing. -/// This includes the periodic timer initialization and the pk_trace_tiny -/// function. The pk_trace_tiny function is called by the PK_TRACE() macro -/// when there is one or less parameters (not including the format string) -/// and the parameter size is 16 bits or smaller. -/// - -#include "pk.h" -#include "pk_trace.h" - -void pk_trace_timer_callback(void* arg); - -#if (PK_TRACE_SUPPORT && PK_TIMER_SUPPORT) - -//Static initialization of the trace timer -PkTimer g_pk_trace_timer = { - .deque = PK_DEQUE_ELEMENT_INIT(), - .timeout = 0, - .callback = pk_trace_timer_callback, - .arg = 0, -}; - -//Static initialization of the pk trace buffer -PkTraceBuffer g_pk_trace_buf = -{ - .version = PK_TRACE_VERSION, - .image_str = PPE_IMG_STRING, - .hash_prefix = PK_TRACE_HASH_PREFIX, - .partial_trace_hash = trace_ppe_hash("PARTIAL TRACE ENTRY. HASH_ID = %d", PK_TRACE_HASH_PREFIX), - .size = PK_TRACE_SZ, - .max_time_change = PK_TRACE_MTBT, - .hz = 500000000, //default value. Actual value is set in pk_init.c - .time_adj64 = 0, - .state.word64 = 0, - .cb = {0} -}; - -//Needed for buffer extraction in simics for now -PkTraceBuffer* g_pk_trace_buf_ptr = &g_pk_trace_buf; - -// Creates an 8 byte entry in the trace buffer that includes a timestamp, -// a format string hash value and a 16 bit parameter. -// -// i_parm has the hash value combined with the 16 bit parameter -void pk_trace_tiny(uint32_t i_parm) -{ - PkTraceTiny footer; - PkTraceState state; - uint64_t* ptr64; - uint64_t tb64; - PkMachineContext ctx; - - //fill in the footer data - footer.parms.word32 = i_parm; - tb64 = pk_timebase_get(); - state.tbu32 = tb64 >> 32; - footer.time_format.word32 = tb64 & 0x00000000ffffffffull; - - footer.time_format.format = PK_TRACE_FORMAT_TINY; - - //The following operations must be done atomically - pk_critical_section_enter(&ctx); - - //load the current byte count and calculate the address for this - //entry in the cb - ptr64 = (uint64_t*)&g_pk_trace_buf.cb[g_pk_trace_buf.state.offset & PK_TRACE_CB_MASK]; - - //calculate the offset for the next entry in the cb - state.offset = g_pk_trace_buf.state.offset + sizeof(PkTraceTiny); - - //update the cb state (tbu and offset) - g_pk_trace_buf.state.word64 = state.word64; - - //write the data to the circular buffer including the - //timesamp, string hash, and 16bit parameter - *ptr64 = footer.word64; - - //exit the critical section - pk_critical_section_exit(&ctx); -} - - -// This function is called periodically in order to ensure that the max ticks -// between trace entries is no more than what will fit inside a 32bit value. -#ifndef PK_TRACE_TIMER_OUTPUT -#define PK_TRACE_TIMER_OUTPUT 1 -#endif -void pk_trace_timer_callback(void* arg) -{ -#if PK_TRACE_TIMER_OUTPUT - // guarantee at least one trace before the lower 32bit timebase flips - PK_TRACE("PERIODIC TIMESTAMPING TRACE"); -#endif - // restart the timer - pk_timer_schedule(&g_pk_trace_timer, - PK_TRACE_TIMER_PERIOD); -} - -// Use this function to synchronize the timebase between multiple PPEs. -// PPE A can send PPE B it's current timebase and then PPE B can set that -// as the current timebase for tracing purposes. It can also be used -// to set the current time to 0. This function changes the timebase for -// all entries that are currently in the trace buffer. Setting the current -// timebase to 0 will cause previous traces to have very large timestamps. -void pk_trace_set_timebase(PkTimebase timebase) -{ - g_pk_trace_buf.time_adj64 = timebase - pk_timebase_get(); -} - -#endif |
