mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-27 06:04:23 +08:00
58e9f94138
Add definitions of rmb() and cpu_relax() and include the ARM unistd.h header. The __kuser_memory_barrier helper in the helper page is used to provide the correct memory barrier depending on the CPU type. [ The rmb() will work on v6 and v7, segfault on v5. Dynamic detection to add v5 support will be added later. ] Signed-off-by: Jamie Iles <jamie.iles@picochip.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mikael Pettersson <mikpe@it.uu.se> LKML-Reference: <1260534009-5394-1-git-send-email-jamie.iles@picochip.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
#ifndef _PERF_PERF_H
|
|
#define _PERF_PERF_H
|
|
|
|
#if defined(__i386__)
|
|
#include "../../arch/x86/include/asm/unistd.h"
|
|
#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
|
|
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
|
|
#endif
|
|
|
|
#if defined(__x86_64__)
|
|
#include "../../arch/x86/include/asm/unistd.h"
|
|
#define rmb() asm volatile("lfence" ::: "memory")
|
|
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
|
|
#endif
|
|
|
|
#ifdef __powerpc__
|
|
#include "../../arch/powerpc/include/asm/unistd.h"
|
|
#define rmb() asm volatile ("sync" ::: "memory")
|
|
#define cpu_relax() asm volatile ("" ::: "memory");
|
|
#endif
|
|
|
|
#ifdef __s390__
|
|
#include "../../arch/s390/include/asm/unistd.h"
|
|
#define rmb() asm volatile("bcr 15,0" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory");
|
|
#endif
|
|
|
|
#ifdef __sh__
|
|
#include "../../arch/sh/include/asm/unistd.h"
|
|
#if defined(__SH4A__) || defined(__SH5__)
|
|
# define rmb() asm volatile("synco" ::: "memory")
|
|
#else
|
|
# define rmb() asm volatile("" ::: "memory")
|
|
#endif
|
|
#define cpu_relax() asm volatile("" ::: "memory")
|
|
#endif
|
|
|
|
#ifdef __hppa__
|
|
#include "../../arch/parisc/include/asm/unistd.h"
|
|
#define rmb() asm volatile("" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory");
|
|
#endif
|
|
|
|
#ifdef __sparc__
|
|
#include "../../arch/sparc/include/asm/unistd.h"
|
|
#define rmb() asm volatile("":::"memory")
|
|
#define cpu_relax() asm volatile("":::"memory")
|
|
#endif
|
|
|
|
#ifdef __alpha__
|
|
#include "../../arch/alpha/include/asm/unistd.h"
|
|
#define rmb() asm volatile("mb" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory")
|
|
#endif
|
|
|
|
#ifdef __ia64__
|
|
#include "../../arch/ia64/include/asm/unistd.h"
|
|
#define rmb() asm volatile ("mf" ::: "memory")
|
|
#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
|
|
#endif
|
|
|
|
#ifdef __arm__
|
|
#include "../../arch/arm/include/asm/unistd.h"
|
|
/*
|
|
* Use the __kuser_memory_barrier helper in the CPU helper page. See
|
|
* arch/arm/kernel/entry-armv.S in the kernel source for details.
|
|
*/
|
|
#define rmb() asm volatile("mov r0, #0xffff0fff; mov lr, pc;" \
|
|
"sub pc, r0, #95" ::: "r0", "lr", "cc", \
|
|
"memory")
|
|
#define cpu_relax() asm volatile("":::"memory")
|
|
#endif
|
|
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/syscall.h>
|
|
|
|
#include "../../include/linux/perf_event.h"
|
|
#include "util/types.h"
|
|
|
|
/*
|
|
* prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
|
|
* counters in the current task.
|
|
*/
|
|
#define PR_TASK_PERF_EVENTS_DISABLE 31
|
|
#define PR_TASK_PERF_EVENTS_ENABLE 32
|
|
|
|
#ifndef NSEC_PER_SEC
|
|
# define NSEC_PER_SEC 1000000000ULL
|
|
#endif
|
|
|
|
static inline unsigned long long rdclock(void)
|
|
{
|
|
struct timespec ts;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
|
|
}
|
|
|
|
/*
|
|
* Pick up some kernel type conventions:
|
|
*/
|
|
#define __user
|
|
#define asmlinkage
|
|
|
|
#define __used __attribute__((__unused__))
|
|
|
|
#define unlikely(x) __builtin_expect(!!(x), 0)
|
|
#define min(x, y) ({ \
|
|
typeof(x) _min1 = (x); \
|
|
typeof(y) _min2 = (y); \
|
|
(void) (&_min1 == &_min2); \
|
|
_min1 < _min2 ? _min1 : _min2; })
|
|
|
|
static inline int
|
|
sys_perf_event_open(struct perf_event_attr *attr,
|
|
pid_t pid, int cpu, int group_fd,
|
|
unsigned long flags)
|
|
{
|
|
attr->size = sizeof(*attr);
|
|
return syscall(__NR_perf_event_open, attr, pid, cpu,
|
|
group_fd, flags);
|
|
}
|
|
|
|
#define MAX_COUNTERS 256
|
|
#define MAX_NR_CPUS 256
|
|
|
|
struct ip_callchain {
|
|
u64 nr;
|
|
u64 ips[0];
|
|
};
|
|
|
|
#endif
|