linux-NWunit.c File Reference

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...

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Functions
int	NWUNIT_init_thread (hwd_context_t *ctx)
int	NWUNIT_init_component (int cidx)
int	NWUNIT_init_control_state (hwd_control_state_t *ptr)
int	NWUNIT_start (hwd_context_t *ctx, hwd_control_state_t *ptr)
int	NWUNIT_stop (hwd_context_t *ctx, hwd_control_state_t *ptr)
int	NWUNIT_read (hwd_context_t *ctx, hwd_control_state_t *ptr, long_long **events, int flags)
int	NWUNIT_shutdown_thread (hwd_context_t *ctx)
int	NWUNIT_ctl (hwd_context_t *ctx, int code, _papi_int_option_t *option)
int	NWUNIT_update_control_state (hwd_control_state_t *ptr, NativeInfo_t *native, int count, hwd_context_t *ctx)
int	NWUNIT_set_domain (hwd_control_state_t *cntrl, int domain)
int	NWUNIT_reset (hwd_context_t *ctx, hwd_control_state_t *ptr)
int	NWUNIT_cleanup_eventset (hwd_control_state_t *ctrl)
int	NWUNIT_ntv_enum_events (unsigned int *EventCode, int modifier)
int	NWUNIT_ntv_name_to_code (const char *name, unsigned int *event_code)
int	NWUNIT_ntv_code_to_name (unsigned int EventCode, char *name, int len)
int	NWUNIT_ntv_code_to_descr (unsigned int EventCode, char *name, int len)
int	NWUNIT_ntv_code_to_bits (unsigned int EventCode, hwd_register_t *bits)

Variables
papi_vector_t	_NWunit_vector

Detailed Description

Author

Heike Jagode jagod.nosp@m.e@ee.nosp@m.cs.ut.nosp@m.k.ed.nosp@m.u Mods: < your name here > < your email address > BGPM / NWunit component

Tested version of bgpm (early access)

Definition in file linux-NWunit.c.

Function Documentation

NWUNIT_cleanup_eventset()

int NWUNIT_cleanup_eventset

(

hwd_control_state_t *

ctrl

)

Definition at line 310 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_cleanup_eventset\n" );
#endif
    int retval;

    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ctrl;
    
    // create a new empty bgpm eventset
    // reason: bgpm doesn't permit to remove events from an eventset; 
    // hence we delete the old eventset and create a new one
    retval = _common_deleteRecreate( &this_state->EventGroup ); // HJ try to use delete() only
    if ( retval < 0 ) return retval;

    return ( PAPI_OK );
}

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NWUNIT_ctl()

int NWUNIT_ctl	(	hwd_context_t *	ctx,
		int	code,
		_papi_int_option_t *	option
	)

Definition at line 185 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_ctl\n" );
#endif
    
    ( void ) ctx;
    ( void ) code;
    ( void ) option;
    return ( PAPI_OK );
}

NWUNIT_init_component()

int NWUNIT_init_component

(

int

cidx

)

Definition at line 49 of file linux-NWunit.c.

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

    _NWunit_vector.cmp_info.CmpIdx = cidx;
#ifdef DEBUG_BGQ
    printf( "NWUNIT_init_component cidx = %d\n", cidx );
#endif
    
    return ( PAPI_OK );
}

NWUNIT_init_control_state()

int NWUNIT_init_control_state

(

hwd_control_state_t *

ptr

)

Definition at line 69 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_init_control_state\n" );
#endif
    int retval;

    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ptr;
    
    this_state->EventGroup = Bgpm_CreateEventSet();
    retval = _check_BGPM_error( this_state->EventGroup, "Bgpm_CreateEventSet" );
    if ( retval < 0 ) return retval;

    return PAPI_OK;
}

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NWUNIT_init_thread()

int NWUNIT_init_thread

(

hwd_context_t *

ctx

)

Definition at line 33 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_init_thread\n" );
#endif
    
    ( void ) ctx;
    return PAPI_OK;
}

NWUNIT_ntv_code_to_bits()

int NWUNIT_ntv_code_to_bits	(	unsigned int	EventCode,
		hwd_register_t *	bits
	)

Definition at line 447 of file linux-NWunit.c.

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

NWUNIT_ntv_code_to_descr()

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

Definition at line 426 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    //printf( "NWUNIT_ntv_code_to_descr\n" );
#endif
    int retval, index;
    
    index = ( EventCode ) + OFFSET;
    
    retval = Bgpm_GetLongDesc( index, name, &len );
    retval = _check_BGPM_error( retval, "Bgpm_GetLongDesc" );                        
    if ( retval < 0 ) return retval;

    return ( PAPI_OK );
}

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NWUNIT_ntv_code_to_name()

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

Definition at line 397 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    //printf( "NWUNIT_ntv_code_to_name\n" );
#endif
    int index;
    
    index = ( EventCode ) + OFFSET;

    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;
    }
    
    return ( PAPI_OK );
}

NWUNIT_ntv_enum_events()

int NWUNIT_ntv_enum_events	(	unsigned int *	EventCode,
		int	modifier
	)

Definition at line 333 of file linux-NWunit.c.

{
    //printf( "NWUNIT_ntv_enum_events\n" );

    switch ( modifier ) {
    case PAPI_ENUM_FIRST:
        *EventCode = 0;

        return ( PAPI_OK );
        break;

    case PAPI_ENUM_EVENTS:
    {
        int index = ( *EventCode ) + OFFSET;

        if ( index < NWUNIT_MAX_EVENTS ) {
            *EventCode = *EventCode + 1;
            return ( PAPI_OK );
        } else
            return ( PAPI_ENOEVNT );

        break;
    }
    default:
        return ( PAPI_EINVAL );
    }
    return ( PAPI_EINVAL );
}

NWUNIT_ntv_name_to_code()

int NWUNIT_ntv_name_to_code	(	const char *	name,
		unsigned int *	event_code
	)

Definition at line 367 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_ntv_name_to_code\n" );
#endif
    int ret;
    
    /* 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 < OFFSET || ret > NWUNIT_MAX_EVENTS ) // not a NWUnit event
        return PAPI_ENOEVNT;
    else
        *event_code = ( ret - OFFSET ) ;
    
    return PAPI_OK;
}

NWUNIT_read()

int NWUNIT_read	(	hwd_context_t *	ctx,
		hwd_control_state_t *	ptr,
		long_long **	events,
		int	flags
	)

Definition at line 137 of file linux-NWunit.c.

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

    *events = this_state->counts;
    
    return ( PAPI_OK );
}

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NWUNIT_reset()

int NWUNIT_reset	(	hwd_context_t *	ctx,
		hwd_control_state_t *	ptr
	)

Definition at line 279 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_reset\n" );
#endif
    ( void ) ctx;
    int retval;
    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ptr;

    /* 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( this_state->EventGroup );
    retval = _check_BGPM_error( retval, "Bgpm_Stop" );
    if ( retval < 0 ) return retval;

    retval = Bgpm_ResetStart( this_state->EventGroup );
    retval = _check_BGPM_error( retval, "Bgpm_ResetStart" );
    if ( retval < 0 ) return retval;

    return ( PAPI_OK );
}

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NWUNIT_set_domain()

int NWUNIT_set_domain	(	hwd_control_state_t *	cntrl,
		int	domain
	)

Definition at line 251 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_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 );
}

NWUNIT_shutdown_thread()

int NWUNIT_shutdown_thread

(

hwd_context_t *

ctx

)

Definition at line 169 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_shutdown_thread\n" );
#endif
    
    ( void ) ctx;
    return ( PAPI_OK );
}

NWUNIT_start()

int NWUNIT_start	(	hwd_context_t *	ctx,
		hwd_control_state_t *	ptr
	)

Definition at line 90 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_start\n" );
#endif
    
    ( void ) ctx;
    int retval;
    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ptr;

    retval = Bgpm_Attach( this_state->EventGroup, UPC_NW_ALL_LINKS, 0); 
    retval = _check_BGPM_error( retval, "Bgpm_Attach" );
    if ( retval < 0 ) return retval;

    retval = Bgpm_ResetStart( this_state->EventGroup );
    retval = _check_BGPM_error( retval, "Bgpm_ResetStart" );
    if ( retval < 0 ) return retval;

    return ( PAPI_OK );
}

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NWUNIT_stop()

int NWUNIT_stop	(	hwd_context_t *	ctx,
		hwd_control_state_t *	ptr
	)

Definition at line 116 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_stop\n" );
#endif
    ( void ) ctx;
    int retval;
    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ptr;
    
    retval = Bgpm_Stop( this_state->EventGroup );
    retval = _check_BGPM_error( retval, "Bgpm_Stop" );
    if ( retval < 0 ) return retval;

    return ( PAPI_OK );
}

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NWUNIT_update_control_state()

int NWUNIT_update_control_state	(	hwd_control_state_t *	ptr,
		NativeInfo_t *	native,
		int	count,
		hwd_context_t *	ctx
	)

Definition at line 205 of file linux-NWunit.c.

{
#ifdef DEBUG_BGQ
    printf( "NWUNIT_update_control_state: count = %d\n", count );
#endif
    ( void ) ctx;
    int retval, index, i;
    NWUNIT_control_state_t * this_state = ( NWUNIT_control_state_t * ) ptr;
    
    // Delete and re-create BGPM eventset
    retval = _common_deleteRecreate( &this_state->EventGroup );
    if ( retval < 0 ) return retval;

    // otherwise, add the events to the eventset
    for ( i = 0; i < count; i++ ) {
        index = ( native[i].ni_event ) + OFFSET;
        
        native[i].ni_position = i;
        
#ifdef DEBUG_BGQ
        printf("NWUNIT_update_control_state: ADD event: i = %d, index = %d\n", i, index );
#endif
        
        /* Add events to the BGPM eventGroup */
        retval = Bgpm_AddEvent( this_state->EventGroup, index );
        retval = _check_BGPM_error( retval, "Bgpm_AddEvent" );
        if ( retval < 0 ) return retval; 
    }
    
    return ( PAPI_OK );
}

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Variable Documentation

_NWunit_vector

papi_vector_t _NWunit_vector

Definition at line 23 of file linux-NWunit.c.