mirror of https://gitee.com/openkylin/linux.git
334 lines
7.8 KiB
C
334 lines
7.8 KiB
C
// SPDX-License-Identifier: LGPL-2.1
|
|
/*
|
|
* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
|
|
*
|
|
*/
|
|
|
|
#include "event-parse.h"
|
|
#include "event-parse-local.h"
|
|
#include "event-utils.h"
|
|
|
|
/**
|
|
* tep_get_event - returns the event with the given index
|
|
* @tep: a handle to the tep_handle
|
|
* @index: index of the requested event, in the range 0 .. nr_events
|
|
*
|
|
* This returns pointer to the element of the events array with the given index
|
|
* If @tep is NULL, or @index is not in the range 0 .. nr_events, NULL is returned.
|
|
*/
|
|
struct tep_event *tep_get_event(struct tep_handle *tep, int index)
|
|
{
|
|
if (tep && tep->events && index < tep->nr_events)
|
|
return tep->events[index];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* tep_get_first_event - returns the first event in the events array
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns pointer to the first element of the events array
|
|
* If @tep is NULL, NULL is returned.
|
|
*/
|
|
struct tep_event *tep_get_first_event(struct tep_handle *tep)
|
|
{
|
|
return tep_get_event(tep, 0);
|
|
}
|
|
|
|
/**
|
|
* tep_get_events_count - get the number of defined events
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns number of elements in event array
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_events_count(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->nr_events;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_set_flag - set event parser flag
|
|
* @tep: a handle to the tep_handle
|
|
* @flag: flag, or combination of flags to be set
|
|
* can be any combination from enum tep_flag
|
|
*
|
|
* This sets a flag or combination of flags from enum tep_flag
|
|
*/
|
|
void tep_set_flag(struct tep_handle *tep, int flag)
|
|
{
|
|
if (tep)
|
|
tep->flags |= flag;
|
|
}
|
|
|
|
/**
|
|
* tep_clear_flag - clear event parser flag
|
|
* @tep: a handle to the tep_handle
|
|
* @flag: flag to be cleared
|
|
*
|
|
* This clears a tep flag
|
|
*/
|
|
void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag)
|
|
{
|
|
if (tep)
|
|
tep->flags &= ~flag;
|
|
}
|
|
|
|
/**
|
|
* tep_test_flag - check the state of event parser flag
|
|
* @tep: a handle to the tep_handle
|
|
* @flag: flag to be checked
|
|
*
|
|
* This returns the state of the requested tep flag.
|
|
* Returns: true if the flag is set, false otherwise.
|
|
*/
|
|
bool tep_test_flag(struct tep_handle *tep, enum tep_flag flag)
|
|
{
|
|
if (tep)
|
|
return tep->flags & flag;
|
|
return false;
|
|
}
|
|
|
|
unsigned short tep_data2host2(struct tep_handle *tep, unsigned short data)
|
|
{
|
|
unsigned short swap;
|
|
|
|
if (!tep || tep->host_bigendian == tep->file_bigendian)
|
|
return data;
|
|
|
|
swap = ((data & 0xffULL) << 8) |
|
|
((data & (0xffULL << 8)) >> 8);
|
|
|
|
return swap;
|
|
}
|
|
|
|
unsigned int tep_data2host4(struct tep_handle *tep, unsigned int data)
|
|
{
|
|
unsigned int swap;
|
|
|
|
if (!tep || tep->host_bigendian == tep->file_bigendian)
|
|
return data;
|
|
|
|
swap = ((data & 0xffULL) << 24) |
|
|
((data & (0xffULL << 8)) << 8) |
|
|
((data & (0xffULL << 16)) >> 8) |
|
|
((data & (0xffULL << 24)) >> 24);
|
|
|
|
return swap;
|
|
}
|
|
|
|
unsigned long long
|
|
tep_data2host8(struct tep_handle *tep, unsigned long long data)
|
|
{
|
|
unsigned long long swap;
|
|
|
|
if (!tep || tep->host_bigendian == tep->file_bigendian)
|
|
return data;
|
|
|
|
swap = ((data & 0xffULL) << 56) |
|
|
((data & (0xffULL << 8)) << 40) |
|
|
((data & (0xffULL << 16)) << 24) |
|
|
((data & (0xffULL << 24)) << 8) |
|
|
((data & (0xffULL << 32)) >> 8) |
|
|
((data & (0xffULL << 40)) >> 24) |
|
|
((data & (0xffULL << 48)) >> 40) |
|
|
((data & (0xffULL << 56)) >> 56);
|
|
|
|
return swap;
|
|
}
|
|
|
|
/**
|
|
* tep_get_header_page_size - get size of the header page
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns size of the header page
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_header_page_size(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->header_page_size_size;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_get_header_timestamp_size - get size of the timestamp in the header page
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns size of the timestamp in the header page
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_header_timestamp_size(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->header_page_ts_size;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_get_cpus - get the number of CPUs
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns the number of CPUs
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_cpus(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->cpus;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_set_cpus - set the number of CPUs
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This sets the number of CPUs
|
|
*/
|
|
void tep_set_cpus(struct tep_handle *tep, int cpus)
|
|
{
|
|
if (tep)
|
|
tep->cpus = cpus;
|
|
}
|
|
|
|
/**
|
|
* tep_get_long_size - get the size of a long integer on the traced machine
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns the size of a long integer on the traced machine
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_long_size(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->long_size;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_set_long_size - set the size of a long integer on the traced machine
|
|
* @tep: a handle to the tep_handle
|
|
* @size: size, in bytes, of a long integer
|
|
*
|
|
* This sets the size of a long integer on the traced machine
|
|
*/
|
|
void tep_set_long_size(struct tep_handle *tep, int long_size)
|
|
{
|
|
if (tep)
|
|
tep->long_size = long_size;
|
|
}
|
|
|
|
/**
|
|
* tep_get_page_size - get the size of a memory page on the traced machine
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns the size of a memory page on the traced machine
|
|
* If @tep is NULL, 0 is returned.
|
|
*/
|
|
int tep_get_page_size(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->page_size;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_set_page_size - set the size of a memory page on the traced machine
|
|
* @tep: a handle to the tep_handle
|
|
* @_page_size: size of a memory page, in bytes
|
|
*
|
|
* This sets the size of a memory page on the traced machine
|
|
*/
|
|
void tep_set_page_size(struct tep_handle *tep, int _page_size)
|
|
{
|
|
if (tep)
|
|
tep->page_size = _page_size;
|
|
}
|
|
|
|
/**
|
|
* tep_is_file_bigendian - return the endian of the file
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns true if the file is in big endian order
|
|
* If @tep is NULL, false is returned.
|
|
*/
|
|
bool tep_is_file_bigendian(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return (tep->file_bigendian == TEP_BIG_ENDIAN);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* tep_set_file_bigendian - set if the file is in big endian order
|
|
* @tep: a handle to the tep_handle
|
|
* @endian: non zero, if the file is in big endian order
|
|
*
|
|
* This sets if the file is in big endian order
|
|
*/
|
|
void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian)
|
|
{
|
|
if (tep)
|
|
tep->file_bigendian = endian;
|
|
}
|
|
|
|
/**
|
|
* tep_is_local_bigendian - return the endian of the saved local machine
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns true if the saved local machine in @tep is big endian.
|
|
* If @tep is NULL, false is returned.
|
|
*/
|
|
bool tep_is_local_bigendian(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return (tep->host_bigendian == TEP_BIG_ENDIAN);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tep_set_local_bigendian - set the stored local machine endian order
|
|
* @tep: a handle to the tep_handle
|
|
* @endian: non zero, if the local host has big endian order
|
|
*
|
|
* This sets the endian order for the local machine.
|
|
*/
|
|
void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian)
|
|
{
|
|
if (tep)
|
|
tep->host_bigendian = endian;
|
|
}
|
|
|
|
/**
|
|
* tep_is_old_format - get if an old kernel is used
|
|
* @tep: a handle to the tep_handle
|
|
*
|
|
* This returns true, if an old kernel is used to generate the tracing events or
|
|
* false if a new kernel is used. Old kernels did not have header page info.
|
|
* If @tep is NULL, false is returned.
|
|
*/
|
|
bool tep_is_old_format(struct tep_handle *tep)
|
|
{
|
|
if (tep)
|
|
return tep->old_format;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* tep_set_test_filters - set a flag to test a filter string
|
|
* @tep: a handle to the tep_handle
|
|
* @test_filters: the new value of the test_filters flag
|
|
*
|
|
* This sets a flag to test a filter string. If this flag is set, when
|
|
* tep_filter_add_filter_str() API as called,it will print the filter string
|
|
* instead of adding it.
|
|
*/
|
|
void tep_set_test_filters(struct tep_handle *tep, int test_filters)
|
|
{
|
|
if (tep)
|
|
tep->test_filters = test_filters;
|
|
}
|