Merge branch 'perf/urgent' into perf/core, to pick up fixes

#define	IN_MULTICAST(a)		IN_CLASSD(a)

#define	IN_MULTICAST_NET	0xe0000000

#define	IN_BADCLASS(a)		((((long int) (a) ) == 0xffffffff)

#define	IN_BADCLASS(a)		(((long int) (a) ) == (long int)0xffffffff)

#define	IN_EXPERIMENTAL(a)	IN_BADCLASS((a))

#define	IN_CLASSE(a)		((((long int) (a)) & 0xf0000000) == 0xf0000000)

The perf c2c tool provides means for Shared Data C2C/HITM analysis. It allows

you to track down the cacheline contentions.

The tool is based on x86's load latency and precise store facility events

provided by Intel CPUs. These events provide:

On x86, the tool is based on load latency and precise store facility events

provided by Intel CPUs. On PowerPC, the tool uses random instruction sampling

with thresholding feature.

These events provide:

  - memory address of the access

  - type of the access (load and store details)

  - latency (in cycles) of the load access

-l::

--ldlat::

	Configure mem-loads latency.

	Configure mem-loads latency. (x86 only)

-k::

--all-kernel::

  -W,-d,--phys-data,--sample-cpu

Unless specified otherwise with '-e' option, following events are monitored by

default:

default on x86:

  cpu/mem-loads,ldlat=30/P

  cpu/mem-stores/P

and following on PowerPC:

  cpu/mem-loads/

  cpu/mem-stores/

User can pass any 'perf record' option behind '--' mark, like (to enable

callchains and system wide monitoring):

	Be more verbose (show counter open errors, etc)

--ldlat <n>::

	Specify desired latency for loads event.

	Specify desired latency for loads event. (x86 only)

In addition, for report all perf report options are valid, and for record

all perf record options.

libperf-y += sym-handling.o

libperf-y += kvm-stat.o

libperf-y += perf_regs.o

libperf-y += mem-events.o

libperf-$(CONFIG_DWARF) += dwarf-regs.o

libperf-$(CONFIG_DWARF) += skip-callchain-idx.o

// SPDX-License-Identifier: GPL-2.0

#include "mem-events.h"

/* PowerPC does not support 'ldlat' parameter. */

char *perf_mem_events__name(int i)

{

	if (i == PERF_MEM_EVENTS__LOAD)

		return (char *) "cpu/mem-loads/";

	return (char *) "cpu/mem-stores/";

}