This file has the source code for a component that enables PAPI-C to access hardware monitoring counters for BG/Q through the BGPM library. More...

Include dependency graph for linux-bgq.c:

Data Structures
struct	bgq_generic_events_t
Defines
#define	get_cycles GetTimeBase
#define	OPCODE_EVENT_CHUNK 8
Functions
int	_bgq_get_memory_info (PAPI_hw_info_t *pHwInfo, int pCPU_Type)
int	_bgq_get_dmem_info (PAPI_dmem_info_t *pDmemInfo)
void	_papi_hwd_lock (int lock)
void	_papi_hwd_unlock (int lock)
int	_bgq_get_system_info (papi_mdi_t *mdi)
int	_bgq_init_control_state (void *ptr)
int	_bgq_set_domain (void *cntrl, int domain)
int	_bgq_init (void *ctx)
int	_bgq_multiplex (void *bgq_state)
int	_bgq_allocate_registers (EventSetInfo_t *ESI)
int	_bgq_cleanup_eventset (void *ctrl)
int	_bgq_update_control_state (void ptr, NativeInfo_t native, int count, void *ctx)
int	_bgq_start (void ctx, void ptr)
int	_bgq_stop (void ctx, void ptr)
int	_bgq_read (void ctx, void ptr, long long **dp, int flags)
int	_bgq_reset (void ctx, void ptr)
int	_bgq_shutdown (void *ctx)
int	_bgq_write (void ctx, void cntrl, long long *from)
void	_bgq_dispatch_timer (int signal, void info, void uc)
void	user_signal_handler (int hEvtSet, uint64_t address, uint64_t ovfVector, const ucontext_t *pContext)
int	_bgq_set_overflow (EventSetInfo_t *ESI, int EventIndex, int threshold)
int	_bgq_set_profile (EventSetInfo_t *ESI, int EventIndex, int threshold)
int	_bgq_stop_profiling (ThreadInfo_t master, EventSetInfo_t ESI)
int	_bgq_ctl (void ctx, int code, _papi_int_option_t option)
long long	_bgq_get_real_usec (void)
long long	_bgq_get_real_cycles (void)
long long	_bgq_get_virt_usec (void)
long long	_bgq_get_virt_cycles (void)
int	_bgq_init_component (int cidx)
int	_bgq_ntv_name_to_code (char name, unsigned int event_code)
int	_bgq_ntv_code_to_name (unsigned int EventCode, char *name, int len)
int	_bgq_ntv_code_to_descr (unsigned int EventCode, char *name, int len)
int	_bgq_ntv_code_to_bits (unsigned int EventCode, void *bits)
int	_bgq_ntv_enum_events (unsigned int *EventCode, int modifier)
int	_papi_hwi_init_os (void)
Variables
UPC_Lock_t	thdLocks [(9+0x2)]
papi_vector_t	_bgq_vectors
PAPI_os_info_t	_papi_os_info
static int	allocated_opcode_events = 0
static int	num_opcode_events = 0
static struct bgq_generic_events_t *	GenericEvent
papi_os_vector_t	_papi_os_vector

Detailed Description

Author:: Heike Jagode jagode@eecs.utk.edu Mods: <your name="" here>=""> <your email="" address>=""> Blue Gene/Q CPU component: BGPM / Punit

Tested version of bgpm (early access)

Definition in file linux-bgq.c.

Define Documentation

#define get_cycles GetTimeBase

Definition at line 48 of file linux-bgq.c.

#define OPCODE_EVENT_CHUNK 8

Definition at line 63 of file linux-bgq.c.

Function Documentation

int _bgq_allocate_registers ( EventSetInfo_t * ESI )

< No error

Definition at line 311 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf("_bgq_allocate_registers\n");
#endif
    int i, natNum;
    int xEventId;

    /*
     * Start monitoring the events...
     */
    natNum = ESI->NativeCount;

    for ( i = 0; i < natNum; i++ ) {
        xEventId = ( ESI->NativeInfoArray[i].ni_event & PAPI_NATIVE_AND_MASK ) + 1;
        ESI->NativeInfoArray[i].ni_position = i;        
    }

    return PAPI_OK;
}

int _bgq_cleanup_eventset ( void * ctrl )

< No error

Definition at line 339 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_cleanup_eventset\n" );
#endif
    
    // set multiplexing flag to OFF (0)
    ctrl->muxOn = 0;
    // set BGPM eventGroup flag back to NOT applied yet (0)
    ctrl->bgpm_eventset_applied = 0;

    return ( PAPI_OK );
}

int _bgq_ctl	(	void *	ctx,
		int	code,
		_papi_int_option_t *	option
	)

< Turn on/off or multiplexing for an eventset

< No error

Definition at line 856 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_ctl\n" );
#endif

    int retval;
    
    switch ( code ) {
        case PAPI_MULTIPLEX:
        {
            hwd_control_state_t * bgq_state = ( ( hwd_control_state_t * ) option->multiplex.ESI->ctl_state );
            bgq_state->muxOn = 1;
            retval = _bgq_multiplex( bgq_state );
            return ( retval );
        }
        default:
            return ( PAPI_OK );
    }
}

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void _bgq_dispatch_timer	(	int	signal,
		void *	info,
		void *	uc
	)

Definition at line 624 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf("BEGIN _bgq_dispatch_timer\n");
#endif
    
    return;
}

int _bgq_get_dmem_info ( PAPI_dmem_info_t * pDmemInfo )

< Invalid argument

< No error

Definition at line 53 of file linux-bgq-memory.c.

{
//  pid_t xPID = getpid();
//  prpsinfo_t xInfo;
//  char xFile[256];
//  int xFD;

//  sprintf(xFile, "/proc/%05d", xPID);
//  if ((fd = open(xFile, O_RDONLY)) < 0) {
//     SUBDBG("PAPI_get_dmem_info can't open /proc/%d\n", xPID);
//     return (PAPI_ESYS);
//  }
//  if (ioctl(xFD, PIOCPSINFO, &xInfo) < 0) {
//     return (PAPI_ESYS);
//  }
//  close(xFD);

    pDmemInfo->size = PAPI_EINVAL;
    pDmemInfo->resident = PAPI_EINVAL;
    pDmemInfo->high_water_mark = PAPI_EINVAL;
    pDmemInfo->shared = PAPI_EINVAL;
    pDmemInfo->text = PAPI_EINVAL;
    pDmemInfo->library = PAPI_EINVAL;
    pDmemInfo->heap = PAPI_EINVAL;
    pDmemInfo->locked = PAPI_EINVAL;
    pDmemInfo->stack = PAPI_EINVAL;
    pDmemInfo->pagesize = PAPI_EINVAL;

    return PAPI_OK;
}

int _bgq_get_memory_info	(	PAPI_hw_info_t *	pHwInfo,
		int	pCPU_Type
	)

Definition at line 33 of file linux-bgq-memory.c.

{
    int retval = 0;

    switch ( pCPU_Type ) {
    default:
        //fprintf(stderr,"Default CPU type in %s (%d)\n",__FUNCTION__,__LINE__);
        retval = init_bgq( &pHwInfo->mem_hierarchy );
        break;
    }

    return retval;
}

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long long _bgq_get_real_cycles ( void )

Definition at line 903 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_get_real_cycles\n" );
#endif

    return ( ( long long ) get_cycles(  ) );

}

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long long _bgq_get_real_usec ( void )

Definition at line 881 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_get_real_usec\n" );
#endif
    
    /*
     * NOTE:  _papi_hwi_system_info.hw_info.mhz is really a representation of unit of time per cycle.
     *        On BG/P, it's value is 8.5e-4.  Therefore, to get cycles per sec, we have to multiply
     *        by 1.0e12.  To then convert to usec, we have to divide by 1.0e-3.
     */
    return ( ( long long ) ( ( ( float ) get_cycles(  ) ) /
                             ( ( _papi_hwi_system_info.hw_info.cpu_max_mhz ) ) ) );

}

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int _bgq_get_system_info ( papi_mdi_t * mdi )

< A System/C library call failed

< No error

Definition at line 136 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_get_system_info\n" );
#endif
    
    //( void ) mdi;
    Personality_t personality;
    int retval;
    
    /* Hardware info */
    retval = Kernel_GetPersonality( &personality, sizeof( Personality_t ) );
    if ( retval ) {
        fprintf( stdout, "Kernel_GetPersonality returned %d (sys error=%d).\n"
                "\t%s\n", retval, errno, strerror( errno ) );
        return PAPI_ESYS;
    }

    /* Returns the number of processors that are associated with the currently
     * running process */
    _papi_hwi_system_info.hw_info.ncpu = Kernel_ProcessorCount( );
    // TODO: HJ Those values need to be fixed
    _papi_hwi_system_info.hw_info.nnodes = Kernel_ProcessCount( );
    _papi_hwi_system_info.hw_info.totalcpus = _papi_hwi_system_info.hw_info.ncpu;
    
    _papi_hwi_system_info.hw_info.cpu_max_mhz = personality.Kernel_Config.FreqMHz;
    _papi_hwi_system_info.hw_info.cpu_min_mhz = personality.Kernel_Config.FreqMHz;

    _papi_hwi_system_info.hw_info.mhz = ( float ) personality.Kernel_Config.FreqMHz;
    SUBDBG( "_bgq_get_system_info:  Detected MHZ is %f\n",
           _papi_hwi_system_info.hw_info.mhz );

    return ( PAPI_OK );
}

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long long _bgq_get_virt_cycles ( void )

Definition at line 934 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_get_virt_cycles\n" );
#endif
    
    return _bgq_get_real_cycles(  );
}

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long long _bgq_get_virt_usec ( void )

Definition at line 919 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_get_virt_usec\n" );
#endif
    
    return _bgq_get_real_usec(  );
}

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int _bgq_init ( void * ctx )

< No error

Definition at line 227 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_init\n" );
#endif
    ( void ) ctx;
    int retval;

#ifdef DEBUG_BGPM
    Bgpm_PrintOnError(1);
    Bgpm_ExitOnError(0);
#else
    Bgpm_PrintOnError(0);
    // avoid bgpm default of exiting when error occurs - caller will check return code instead.
    Bgpm_ExitOnError(0);    
#endif
    
    retval = Bgpm_Init( BGPM_MODE_SWDISTRIB );
    CHECK_BGPM_ERROR( retval, "Bgpm_Init" );

    //_common_initBgpm();
    
    return PAPI_OK; 
}

int _bgq_init_component ( int cidx )

< Insufficient memory

< No error

< Used with setting up array

< No error

Definition at line 951 of file linux-bgq.c.

{   
#ifdef DEBUG_BGQ
    printf("_bgq_init_substrate\n");
    //printf("_bgq_init_substrate: 1. BGPM_INITIALIZED = %d \n", BGPM_INITIALIZED);
#endif
    int retval;
    int i;
        
    /* allocate the opcode event structure */
    GenericEvent = calloc( OPCODE_EVENT_CHUNK, sizeof( struct bgq_generic_events_t ) );
    if ( NULL == GenericEvent ) {
        return PAPI_ENOMEM;
    }
    
    /* init opcode event stuff */
    allocated_opcode_events = OPCODE_EVENT_CHUNK;
    num_opcode_events = 0;
        
    _bgq_vectors.cmp_info.CmpIdx = cidx;

    /*
     * Fill in what we can of the papi_system_info
     */
    SUBDBG( "Before _bgq_get_system_info()...\n" );
    retval = _bgq_get_system_info( &_papi_hwi_system_info );
    SUBDBG( "After _bgq_get_system_info(), retval=%d...\n", retval );
    if ( retval != PAPI_OK )
        return ( retval );

    /*
     * Setup memory info
     */

    SUBDBG( "Before _bgq_get_memory_info...\n" );
    retval = _bgq_get_memory_info( &_papi_hwi_system_info.hw_info,
                                  ( int ) _papi_hwi_system_info.hw_info.
                                  model );
    SUBDBG( "After _bgq_get_memory_info, retval=%d...\n", retval );
    if ( retval )
        return ( retval );
#if 1
    /* Setup Locks */
    for ( i = 0; i < PAPI_MAX_LOCK; i++ )
        thdLocks[i] = 0;  // MUTEX_OPEN
#else
    for( i = 0; i < PAPI_MAX_LOCK; i++ ) {
        pthread_mutex_init( &thdLocks[i], NULL );
    }
#endif
    
    /* Setup presets */
    retval = _papi_load_preset_table( "BGQ", 0, cidx );
    if ( retval ) {
        return retval;
    }   
    
    
    return ( PAPI_OK );
}

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int _bgq_init_control_state ( void * ptr )

< No error

Definition at line 177 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_init_control_state\n" );
#endif
    
    ptr->EventGroup = Bgpm_CreateEventSet();
    CHECK_BGPM_ERROR( ptr->EventGroup, "Bgpm_CreateEventSet" );
    
    // initialize multiplexing flag to OFF (0)
    ptr->muxOn = 0;
    // initialized BGPM eventGroup flag to NOT applied yet (0)
    ptr->bgpm_eventset_applied = 0;
    
    return PAPI_OK;
}

int _bgq_multiplex ( void * bgq_state )

Definition at line 254 of file linux-bgq.c.

{
    int retval;
    uint64_t bgpm_period;
    double Sec, Hz; 

#ifdef DEBUG_BGQ
    printf("_bgq_multiplex BEGIN: Num of Events = %d (vs %d)\n", Bgpm_NumEvents( bgq_state->EventGroup ), bgq_state->count );
#endif
    
    // convert Mhz to Hz ( = cycles / sec )
    Hz = (double) _papi_hwi_system_info.hw_info.cpu_max_mhz * 1000 * 1000;
    // convert PAPI multiplex period (in ns) to BGPM period (in cycles)
    Sec = (double) _papi_os_info.itimer_ns / ( 1000 * 1000 * 1000 );
    bgpm_period = Hz * Sec;

    // if EventGroup is not empty -- which is required by BGPM before 
    // we can call SetMultiplex() -- then drain the events from the 
    // BGPM EventGroup, turn on multiplex flag, and rebuild BGPM EventGroup.
    if ( 0 < bgq_state->count ) {
        // Delete and re-create BGPM eventset
        _common_deleteRecreate( &bgq_state->EventGroup );
        
        // turn on multiplex for BGPM
        retval = Bgpm_SetMultiplex( bgq_state->EventGroup, bgpm_period, BGPM_NORMAL );      
        CHECK_BGPM_ERROR( retval, "Bgpm_SetMultiplex" );
        
        // rebuild BGPM EventGroup
        _common_rebuildEventgroup( bgq_state->count, 
                                   bgq_state->EventGroup_local, 
                                   &bgq_state->EventGroup );        
    }
    else {
        // need to pass either BGPM_NORMAL or BGPM_NOTNORMAL 
        // BGPM_NORMAL: numbers reported by Bgpm_ReadEvent() are normalized 
        // to the maximum time spent in a multiplexed group
        retval = Bgpm_SetMultiplex( bgq_state->EventGroup, bgpm_period, BGPM_NORMAL );      
        CHECK_BGPM_ERROR( retval, "Bgpm_SetMultiplex" );                
    }

#ifdef DEBUG_BGQ
    printf("_bgq_multiplex END: Num of Events = %d (vs %d) --- retval = %d\n", 
           Bgpm_NumEvents( bgq_state->EventGroup ), bgq_state->count, retval );
#endif
    
    return ( retval );
}

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int _bgq_ntv_code_to_bits	(	unsigned int	EventCode,
		void *	bits
	)

< No error

Definition at line 1178 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_ntv_code_to_bits\n" );
#endif
    
    ( void ) EventCode;
    ( void ) bits;
    
    return ( PAPI_OK );
}

int _bgq_ntv_code_to_descr	(	unsigned int	EventCode,
		char *	name,
		int	len
	)

< No error

Definition at line 1153 of file linux-bgq.c.

{   
#ifdef DEBUG_BGQ
    printf( "_bgq_ntv_code_to_descr\n" );
#endif
    int retval;
    int index = ( EventCode & PAPI_NATIVE_AND_MASK ) + 1;

    retval = Bgpm_GetLongDesc( index, name, &len );
    CHECK_BGPM_ERROR( retval, "Bgpm_GetLongDesc" );                      

    return ( PAPI_OK );
}

int _bgq_ntv_code_to_name	(	unsigned int	EventCode,
		char *	name,
		int	len
	)

< Event does not exist

< No error

Definition at line 1122 of file linux-bgq.c.

{   
#ifdef DEBUG_BGQ    
    printf( "_bgq_ntv_code_to_name\n" );
#endif
    int index = ( EventCode & PAPI_NATIVE_AND_MASK ) + 1;
    
    if ( index >= MAX_COUNTERS )
        return PAPI_ENOEVNT;
            
    strncpy( name, Bgpm_GetEventIdLabel( index ), len );
    
    if ( name == NULL ) {
#ifdef DEBUG_BGPM
        printf ("Error: ret value is NULL for BGPM API function Bgpm_GetEventIdLabel.\n" );
#endif
        return PAPI_ENOEVNT;
    }
#ifdef DEBUG_BGQ
    printf( "name = ===%s===\n", name );
#endif  
    
    return ( PAPI_OK );
}

int _bgq_ntv_enum_events	(	unsigned int *	EventCode,
		int	modifier
	)

< No error

< Event does not exist

< Invalid argument

Definition at line 1195 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_ntv_enum_events\n" );
#endif
    
    switch ( modifier ) {
        case PAPI_ENUM_FIRST:
            *EventCode = PAPI_NATIVE_MASK;
            
            return ( PAPI_OK );
            break;
            
        case PAPI_ENUM_EVENTS:
        {
            int index = ( *EventCode & PAPI_NATIVE_AND_MASK ) + 1;
            
            if ( index < BGQ_PUNIT_MAX_COUNTERS ) {
                *EventCode = *EventCode + 1;
                return ( PAPI_OK );
            } else
                return ( PAPI_ENOEVNT );
            
            break;
        }
        default:
            return ( PAPI_EINVAL );
    }
    
    return ( PAPI_EINVAL ); 
}

int _bgq_ntv_name_to_code	(	char *	name,
		unsigned int *	event_code
	)

< Event does not exist

< Insufficient memory

< Event does not exist

< No error

Definition at line 1021 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_ntv_name_to_code\n" );
#endif
    int ret;
#ifdef DEBUG_BGQ
    printf( "name = ===%s===\n", name );
#endif  

    /* Treat events differently if BGPM Opcodes are used */
    /* Opcode group selection values are "OR"ed together to create a desired 
     mask of instruction group events to accumulate in the same counter */  
    if ( 0 == strncmp( name, "PEVT_INST_XU_GRP_MASK", strlen( "PEVT_INST_XU_GRP_MASK" ) ) ||
         0 == strncmp( name, "PEVT_INST_QFPU_GRP_MASK", strlen( "PEVT_INST_QFPU_GRP_MASK" ) ) ) {

        char *pcolon;
        pcolon = strchr( name, ':' );
        
        // Found colon separator
        if ( pcolon != NULL ) {
            int mask_len = pcolon - name;
            strncpy( GenericEvent[num_opcode_events].mask, name,  mask_len  );
            strncpy( GenericEvent[num_opcode_events].opcode, pcolon+1, strlen(name) - 1 - mask_len );
            /* opcode_mask needs to be 'uint64_t',
               hence we use strtoull() which returns an 'unsigned long long int' */
            GenericEvent[num_opcode_events].opcode_mask = strtoull( GenericEvent[num_opcode_events].opcode, (char **)NULL, 16 );
            GenericEvent[num_opcode_events].idx = OPCODE_BUF + num_opcode_events;
            /* Return event id matching the generic XU/QFPU event string */
            GenericEvent[num_opcode_events].eventId = Bgpm_GetEventIdFromLabel( GenericEvent[num_opcode_events].mask );
            if ( GenericEvent[num_opcode_events].eventId <= 0 ) {
#ifdef DEBUG_BGPM
                printf ("Error: ret value is %d for BGPM API function '%s'.\n",
                        ret, "Bgpm_GetEventIdFromLabel" );
#endif
                return PAPI_ENOEVNT;
            }
            
            *event_code = GenericEvent[num_opcode_events].idx;
            
            num_opcode_events++;
            
            /* If there are too many opcode events than allocated, then allocate more room */
            if( num_opcode_events >= allocated_opcode_events ) {
                
                SUBDBG("Allocating more room for BGPM opcode events (%d %ld)\n",
                       ( allocated_opcode_events + NATIVE_OPCODE_CHUNK ),
                       ( long )sizeof( struct bgq_generic_events_t ) *
                       ( allocated_opcode_events + NATIVE_OPCODE_CHUNK ) );
                
                GenericEvent = realloc( GenericEvent, sizeof( struct bgq_generic_events_t ) *
                                       ( allocated_opcode_events + OPCODE_EVENT_CHUNK ) );
                if ( NULL == GenericEvent ) {
                    return PAPI_ENOMEM;
                }
                allocated_opcode_events += OPCODE_EVENT_CHUNK;
            }
        }
        else {
            SUBDBG( "Error: Found a generic BGPM event mask without opcode string\n" );
            return PAPI_ENOEVNT;
        }
        
        
#ifdef DEBUG_BGQ
        printf(_AT_ " _bgq_ntv_name_to_code: GenericEvent no. %d: \n", num_opcode_events-1 );
        printf( "idx         = %d\n", GenericEvent[num_opcode_events-1].idx);
        printf( "eventId     = %d\n", GenericEvent[num_opcode_events-1].eventId);
        printf( "mask        = %s\n", GenericEvent[num_opcode_events-1].mask);
        printf( "opcode      = %s\n", GenericEvent[num_opcode_events-1].opcode);
        printf( "opcode_mask = %" PRIX64 " (%" PRIu64 ")\n", GenericEvent[num_opcode_events-1].opcode_mask,
               GenericEvent[num_opcode_events-1].opcode_mask );
#endif
    }
    else {
        /* Return event id matching a given event label string */
        ret = Bgpm_GetEventIdFromLabel ( name );
        
        if ( ret <= 0 ) {
#ifdef DEBUG_BGPM
            printf ("Error: ret value is %d for BGPM API function '%s'.\n",
                    ret, "Bgpm_GetEventIdFromLabel" );
#endif
            return PAPI_ENOEVNT;
        }
        else if ( ret > BGQ_PUNIT_MAX_COUNTERS ) // not a PUnit event
            return PAPI_ENOEVNT;
        else
            *event_code = ( ret - 1 );      
    }
    
    return PAPI_OK;
}

int _bgq_read	(	void *	ctx,
		void *	ptr,
		long long **	dp,
		int	flags
	)

< No error

Definition at line 519 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_read\n" );
#endif
    ( void ) ctx;
    ( void ) flags;
    int i, numEvts;
    
    numEvts = Bgpm_NumEvents( ptr->EventGroup );
    if ( numEvts == 0 ) {
#ifdef DEBUG_BGPM
        printf ("Error: ret value is %d for BGPM API function Bgpm_NumEvents.\n", numEvts );
        //return ( EXIT_FAILURE );
#endif
    }
    
    for ( i = 0; i < numEvts; i++ ) 
        ptr->counters[i] = _common_getEventValue( i, ptr->EventGroup );

    *dp = ptr->counters;
        
    return ( PAPI_OK );
}

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int _bgq_reset	(	void *	ctx,
		void *	ptr
	)

< No error

Definition at line 551 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_reset\n" );
#endif
    ( void ) ctx;
    int retval;
    
    /* we can't simply call Bgpm_Reset() since PAPI doesn't have the 
       restriction that an EventSet has to be stopped before resetting is
       possible. However, BGPM does have this restriction. 
       Hence we need to stop, reset and start */
    retval = Bgpm_Stop( ptr->EventGroup );
    CHECK_BGPM_ERROR( retval, "Bgpm_Stop" );
    
    retval = Bgpm_ResetStart( ptr->EventGroup );
    CHECK_BGPM_ERROR( retval, "Bgpm_ResetStart" );

    return ( PAPI_OK );
}

int _bgq_set_domain	(	void *	cntrl,
		int	domain
	)

< User context counted

< Kernel/OS context counted

< Exception/transient mode (like user TLB misses )

< Invalid argument

< No error

Definition at line 199 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_set_domain\n" );
#endif
    int found = 0;
    ( void ) cntrl;
    
    if ( PAPI_DOM_USER & domain )
        found = 1;
    
    if ( PAPI_DOM_KERNEL & domain )
        found = 1;
    
    if ( PAPI_DOM_OTHER & domain )
        found = 1;
    
    if ( !found )
        return ( PAPI_EINVAL );
    
    return ( PAPI_OK );
}

int _bgq_set_overflow	(	EventSetInfo_t *	ESI,
		int	EventIndex,
		int	threshold
	)

< No error

Definition at line 733 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf("BEGIN _bgq_set_overflow\n");
#endif
    hwd_control_state_t * this_state = ( hwd_control_state_t * ) ESI->ctl_state;
    int retval;
    int evt_idx;
    uint64_t threshold_for_bgpm;
    
    /*
     * In case an BGPM eventGroup HAS BEEN applied or attached before
     * overflow is set, delete the eventGroup and create an new empty one,
     * and rebuild as it was prior to deletion
     */
#ifdef DEBUG_BGQ
    printf( "_bgq_set_overflow: bgpm_eventset_applied = %d\n",
            this_state->bgpm_eventset_applied );
#endif  
    if ( 1 == this_state->bgpm_eventset_applied ) {
        _common_deleteRecreate( &this_state->EventGroup );
        _common_rebuildEventgroup( this_state->count,
                                   this_state->EventGroup_local,
                                   &this_state->EventGroup );
        
        /* set BGPM eventGroup flag back to NOT applied yet (0) 
         * because the eventGroup has been recreated from scratch */
        this_state->bgpm_eventset_applied = 0;
    }
    
    /* convert threadhold value assigned by PAPI user to value that is
     * programmed into the counter. This value is required by Bgpm_SetOverflow() */ 
    threshold_for_bgpm = BGPM_PERIOD2THRES( threshold );
    
    evt_idx = ESI->EventInfoArray[EventIndex].pos[0];
    //evt_id = ( ESI->NativeInfoArray[EventIndex].ni_event & PAPI_NATIVE_AND_MASK ) + 1;
    SUBDBG( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
            evt_idx, EventIndex, threshold );
#ifdef DEBUG_BGQ
    printf( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
            evt_idx, EventIndex, threshold );
#endif
    /* If this counter isn't set to overflow, it's an error */
    if ( threshold == 0 ) {
        /* Remove the signal handler */
        retval = _papi_hwi_stop_signal( _bgq_vectors.cmp_info.hardware_intr_sig );
        if ( retval != PAPI_OK )
            return ( retval );
    }
    else {
#ifdef DEBUG_BGQ
        printf( "_bgq_set_overflow: Enable the signal handler\n" );
#endif      
        /* Enable the signal handler */
        retval = _papi_hwi_start_signal( _bgq_vectors.cmp_info.hardware_intr_sig, 
                                         NEED_CONTEXT, 
                                         _bgq_vectors.cmp_info.CmpIdx );
        if ( retval != PAPI_OK )
            return ( retval );
        
        retval = Bgpm_SetOverflow( this_state->EventGroup, 
                                   evt_idx,
                                   threshold_for_bgpm );

        CHECK_BGPM_ERROR( retval, "Bgpm_SetOverflow" );
        
        retval = Bgpm_SetEventUser1( this_state->EventGroup, 
                                     evt_idx,
                                     1024 );
        CHECK_BGPM_ERROR( retval, "Bgpm_SetEventUser1" );

        /* user signal handler for overflow case */
        retval = Bgpm_SetOverflowHandler( this_state->EventGroup, user_signal_handler );
        CHECK_BGPM_ERROR( retval, "Bgpm_SetOverflowHandler" );
    }

    return ( PAPI_OK );
}

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int _bgq_set_profile	(	EventSetInfo_t *	ESI,
		int	EventIndex,
		int	threshold
	)

< Not supported by component

Definition at line 819 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf("BEGIN _bgq_set_profile\n");
#endif
    
    ( void ) ESI;
    ( void ) EventIndex;
    ( void ) threshold;
    
    return PAPI_ECMP;
}

int _bgq_shutdown ( void * ctx )

< No error

Definition at line 581 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_shutdown\n" );
#endif
    ( void ) ctx;
    int retval;
    
    /* Disable BGPM library */  
    retval = Bgpm_Disable();
    CHECK_BGPM_ERROR( retval, "Bgpm_Disable" );

    return ( PAPI_OK );
    
}

int _bgq_start	(	void *	ctx,
		void *	ptr
	)

< No error

Definition at line 465 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "BEGIN _bgq_start\n" );
#endif
    ( void ) ctx;
    int retval;
        
    retval = Bgpm_Apply( ptr->EventGroup ); 
    CHECK_BGPM_ERROR( retval, "Bgpm_Apply" );
    
    // set flag to 1: BGPM eventGroup HAS BEEN applied
    ptr->bgpm_eventset_applied = 1;

#ifdef DEBUG_BGQ
    int i;
    int numEvts = Bgpm_NumEvents( ptr->EventGroup );
    for ( i = 0; i < numEvts; i++ ) {
        printf("%d = %s\n", i, Bgpm_GetEventLabel( ptr->EventGroup, i) );
    }
#endif  
    
    /* Bgpm_Apply() does an implicit reset; 
     hence no need to use Bgpm_ResetStart */
    retval = Bgpm_Start( ptr->EventGroup );
    CHECK_BGPM_ERROR( retval, "Bgpm_Start" );
    
    return ( PAPI_OK );
}

int _bgq_stop	(	void *	ctx,
		void *	ptr
	)

< No error

Definition at line 499 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "BEGIN _bgq_stop\n" );
#endif
    ( void ) ctx;
    int retval;
    
    retval = Bgpm_Stop( ptr->EventGroup );
    CHECK_BGPM_ERROR( retval, "Bgpm_Stop" );
    
    return ( PAPI_OK );
}

int _bgq_stop_profiling	(	ThreadInfo_t *	master,
		EventSetInfo_t *	ESI
	)

< No error

Definition at line 838 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf("BEGIN _bgq_stop_profiling\n");
#endif
    
    ( void ) master;
    ( void ) ESI;
    
    return ( PAPI_OK );
}

int _bgq_update_control_state	(	void *	ptr,
		NativeInfo_t *	native,
		int	count,
		void *	ctx
	)

< No error

Definition at line 362 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( _AT_ " _bgq_update_control_state: count = %d, EventGroup=%d\n", count, ptr->EventGroup );
#endif
    ( void ) ctx;
    int i, j, index, retval;
    unsigned evtIdx;
    
    // Delete and re-create BGPM eventset
    _common_deleteRecreate( &ptr->EventGroup );
    
#ifdef DEBUG_BGQ
    printf( _AT_ " _bgq_update_control_state: EventGroup=%d, muxOn = %d\n", ptr->EventGroup, ptr->muxOn );
#endif
    
    // add the events to the eventset
    for ( i = 0; i < count; i++ ) {
        index = ( native[i].ni_event & PAPI_NATIVE_AND_MASK ) + 1;
        
        ptr->EventGroup_local[i] = index;

        // we found an opcode event
        if ( index > BGQ_PUNIT_MAX_COUNTERS ) {
            for( j = 0; j < num_opcode_events; j++ ) {
#ifdef DEBUG_BGQ
                printf(_AT_ " _bgq_update_control_state: %d out of %d OPCODES\n",
                       j, num_opcode_events );
#endif
#ifdef DEBUG_BGQ
                printf(_AT_ " _bgq_update_control_state: j's idx = %d, index = %d\n",
                       GenericEvent[j].idx, index );
#endif
                if ( GenericEvent[j].idx == ( index - 1) ) {
                    /* Add events to the BGPM eventGroup */
                    retval = Bgpm_AddEvent( ptr->EventGroup, GenericEvent[j].eventId );
                    CHECK_BGPM_ERROR( retval, "Bgpm_AddEvent" );
#ifdef DEBUG_BGQ
                    printf(_AT_ " _bgq_update_control_state: ADD event: i = %d, eventId = %d\n", i, GenericEvent[j].eventId );
#endif
                    
                    evtIdx = Bgpm_GetEventIndex( ptr->EventGroup,
                                                 GenericEvent[j].eventId,
                                                 i );
#ifdef DEBUG_BGQ
                    printf(_AT_ " _bgq_update_control_state: evtIdx in EventGroup = %d\n",
                           evtIdx );
#endif
                    if ( 0 == strcmp( GenericEvent[j].mask, "PEVT_INST_XU_GRP_MASK" ) ) {
                        retval = Bgpm_SetXuGrpMask( ptr->EventGroup,
                                                    evtIdx,
                                                    GenericEvent[j].opcode_mask );
                        CHECK_BGPM_ERROR( retval, "Bgpm_SetXuGrpMask" );
#ifdef DEBUG_BGQ
                        printf(_AT_ " _bgq_update_control_state: it's PEVT_INST_XU_GRP_MASK\n" );
#endif
                    } else if ( 0 == strcmp( GenericEvent[j].mask, "PEVT_INST_QFPU_GRP_MASK" ) ) {
                        retval = Bgpm_SetQfpuGrpMask( ptr->EventGroup,
                                                      evtIdx,
                                                      GenericEvent[j].opcode_mask );
                        CHECK_BGPM_ERROR( retval, "Bgpm_SetQfpuGrpMask" );
#ifdef DEBUG_BGQ
                        printf(_AT_ " _bgq_update_control_state: it's PEVT_INST_QFPU_GRP_MASK\n" );
#endif
                    }
                }   
            }
        }
        else {
#ifdef DEBUG_BGQ
            printf(_AT_ " _bgq_update_control_state: no OPCODE\n" );
#endif
            
            /* Add events to the BGPM eventGroup */
            retval = Bgpm_AddEvent( ptr->EventGroup, index );
            CHECK_BGPM_ERROR( retval, "Bgpm_AddEvent" );
#ifdef DEBUG_BGQ
            printf(_AT_ " _bgq_update_control_state: ADD event: i = %d, index = %d\n", i, index );
#endif
            
        }
    }
    
    // store how many events we added to an EventSet
    ptr->count = count;

    // if muxOn and EventGroup is not empty -- which is required by BGPM before 
    // we can call SetMultiplex() -- then drain the events from the 
    // BGPM EventGroup, turn on multiplex flag, and rebuild BGPM EventGroup.
    if ( 1 == ptr->muxOn ) 
        retval = _bgq_multiplex( ptr );
    
    return ( PAPI_OK );
}

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int _bgq_write	(	void *	ctx,
		void *	cntrl,
		long long *	from
	)

< Not supported by component

Definition at line 604 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "_bgq_write\n" );
#endif
    ( void ) ctx;
    ( void ) cntrl;
    ( void ) from;
    
    return PAPI_ECMP;
}

void _papi_hwd_lock ( int lock )

< Used with setting up array

Definition at line 91 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( _AT_ " _papi_hwd_lock %d\n", lock);
#endif
    assert( lock < PAPI_MAX_LOCK );
#if 1
    UPC_Lock( &thdLocks[lock] );
#else
    pthread_mutex_lock( &thdLocks[lock] );
#endif
    
#ifdef DEBUG_BGQ
    printf( _AT_ " _papi_hwd_lock got lock %d\n", lock );
#endif
    
    return;
}

void _papi_hwd_unlock ( int lock )

< Used with setting up array

Definition at line 114 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( _AT_ " _papi_hwd_unlock %d\n", lock );
#endif
    assert( lock < PAPI_MAX_LOCK );
#if 1
    UPC_Unlock( &thdLocks[lock] );
#else
    pthread_mutex_unlock( &thdLocks[lock] );
#endif
    
    return;
}

int _papi_hwi_init_os ( void )

< No error

Definition at line 1229 of file linux-bgq.c.

                        {
    
    struct utsname uname_buffer;
    
    /* Get the kernel info */
    uname(&uname_buffer);
    
    strncpy(_papi_os_info.name,uname_buffer.sysname,PAPI_MAX_STR_LEN);
    
    strncpy(_papi_os_info.version,uname_buffer.release,PAPI_MAX_STR_LEN);
    
    _papi_os_info.itimer_sig = PAPI_INT_MPX_SIGNAL;
    _papi_os_info.itimer_num = PAPI_INT_ITIMER;
    _papi_os_info.itimer_res_ns = 1;
    
    return PAPI_OK;
}

void user_signal_handler	(	int	hEvtSet,
		uint64_t	address,
		uint64_t	ovfVector,
		const ucontext_t *	pContext
	)

< Force using Software

< Using Hardware

Definition at line 642 of file linux-bgq.c.

{
#ifdef DEBUG_BGQ
    printf( "user_signal_handler start\n" );
#endif
    
    int retval, i;
    int isHardware = 1;
    int cidx = _bgq_vectors.cmp_info.CmpIdx;
    long_long overflow_bit = 0;
    caddr_t address1;
    _papi_hwi_context_t ctx;
    ctx.ucontext = ( hwd_ucontext_t * ) pContext;
    ThreadInfo_t *thread = _papi_hwi_lookup_thread( 0 );
    
    //printf(_AT_ " thread = %p\n", thread);    // <<<<<<<<<<<<<<<<<<
    
    EventSetInfo_t *ESI;
    ESI = thread->running_eventset[cidx];
    // Get the indices of all events which have overflowed.
    unsigned ovfIdxs[BGPM_MAX_OVERFLOW_EVENTS];
    unsigned len = BGPM_MAX_OVERFLOW_EVENTS;
    
    retval = Bgpm_GetOverflowEventIndices( hEvtSet, ovfVector, ovfIdxs, &len );

    if ( retval < 0 ) {
#ifdef DEBUG_BGPM
        printf ( "Error: ret value is %d for BGPM API function Bgpm_GetOverflowEventIndices.\n", 
                 retval ); 
#endif
        return;
    }
        
    if ( thread == NULL ) {
        PAPIERROR( "thread == NULL in user_signal_handler!" );
        return;
    }
        
    if ( ESI == NULL ) {
        PAPIERROR( "ESI == NULL in user_signal_handler!");
        return;
    }
        
    if ( ESI->overflow.flags == 0 ) {
        PAPIERROR( "ESI->overflow.flags == 0 in user_signal_handler!");
        return;
    }

    for ( i = 0; i < len; i++ ) {
        uint64_t hProf;
        Bgpm_GetEventUser1( hEvtSet, ovfIdxs[i], &hProf );
        if ( hProf ) {
            overflow_bit ^= 1 << ovfIdxs[i];
            break;
        }
        
    }
    
    if ( ESI->overflow.flags & PAPI_OVERFLOW_FORCE_SW ) {
#ifdef DEBUG_BGQ
        printf("OVERFLOW_SOFTWARE\n");
#endif
        address1 = GET_OVERFLOW_ADDRESS( ctx );
        _papi_hwi_dispatch_overflow_signal( ( void * ) &ctx, address1, NULL, 0, 0, &thread, cidx );
        return;
    }
    else if ( ESI->overflow.flags & PAPI_OVERFLOW_HARDWARE ) {
#ifdef DEBUG_BGQ
        printf("OVERFLOW_HARDWARE\n");
#endif
        address1 = GET_OVERFLOW_ADDRESS( ctx );
        _papi_hwi_dispatch_overflow_signal( ( void * ) &ctx, address1, &isHardware, overflow_bit, 0, &thread, cidx );
    }
    else {
#ifdef DEBUG_BGQ
        printf("OVERFLOW_NONE\n");
#endif
        PAPIERROR( "ESI->overflow.flags is set to something other than PAPI_OVERFLOW_HARDWARE or PAPI_OVERFLOW_FORCE_SW (%x)", thread->running_eventset[cidx]->overflow.flags);
    }
}

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Variable Documentation

papi_vector_t _bgq_vectors

Definition at line 60 of file linux-bgq.c.

PAPI_os_info_t _papi_os_info

Definition at line 61 of file linux-bgq.c.

papi_os_vector_t _papi_os_vector

Initial value:

 {
    .get_memory_info = _bgq_get_memory_info,
    .get_dmem_info = _bgq_get_dmem_info,
    .get_real_cycles = _bgq_get_real_cycles,
    .get_real_usec = _bgq_get_real_usec,
    .get_virt_cycles = _bgq_get_virt_cycles,
    .get_virt_usec = _bgq_get_virt_usec,
    .get_system_info = _bgq_get_system_info
}

Definition at line 1310 of file linux-bgq.c.

int allocated_opcode_events = 0 [static]

Definition at line 64 of file linux-bgq.c.

struct bgq_generic_events_t* GenericEvent [static]

Definition at line 75 of file linux-bgq.c.

int num_opcode_events = 0 [static]

Definition at line 65 of file linux-bgq.c.

UPC_Lock_t thdLocks[(9+0x2)]

Definition at line 52 of file linux-bgq.c.

Data Structures

Defines

Functions

Variables

Detailed Description

Define Documentation

Function Documentation

Variable Documentation