forked from Minki/linux
d2709c7ce4
Make perf build for x86 once the UAPI disintegration patches for that arch have been applied by adding the appropriate -I flags - in the right order - and then converting some #includes that use ../.. notation to find main kernel headerfiles to use <asm/foo.h> and <linux/foo.h> instead. Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include. This makes sure we get the userspace version of the pt_regs struct. Ideally, we wouldn't have the latter -I flag at all, but unfortunately we want asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI - at least not for x86. I wonder if the bits outside of the __KERNEL__ guards *should* be transferred there. I note also that perf seems to do its dependency handling manually by listing all the header files it might want to use in LIB_H in the Makefile. Can this be changed to use -MD? Note that to do make this work, we need to export and UAPI disintegrate linux/hw_breakpoint.h, which I think should've been exported previously so that perf can access the bits. We have to do this in the same patch to maintain bisectability. Signed-off-by: David Howells <dhowells@redhat.com>
239 lines
5.1 KiB
C
239 lines
5.1 KiB
C
#ifndef _PERF_PERF_H
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#define _PERF_PERF_H
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struct winsize;
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void get_term_dimensions(struct winsize *ws);
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#include <asm/unistd.h>
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#if defined(__i386__)
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#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#define CPUINFO_PROC "model name"
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#ifndef __NR_perf_event_open
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# define __NR_perf_event_open 336
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#endif
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#endif
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#if defined(__x86_64__)
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#define rmb() asm volatile("lfence" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#define CPUINFO_PROC "model name"
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#ifndef __NR_perf_event_open
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# define __NR_perf_event_open 298
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#endif
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#endif
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#ifdef __powerpc__
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#define rmb() asm volatile ("sync" ::: "memory")
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#define cpu_relax() asm volatile ("" ::: "memory");
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#define CPUINFO_PROC "cpu"
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#endif
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#ifdef __s390__
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#define rmb() asm volatile("bcr 15,0" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory");
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#endif
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#ifdef __sh__
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#if defined(__SH4A__) || defined(__SH5__)
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# define rmb() asm volatile("synco" ::: "memory")
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#else
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# define rmb() asm volatile("" ::: "memory")
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#endif
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#define cpu_relax() asm volatile("" ::: "memory")
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#define CPUINFO_PROC "cpu type"
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#endif
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#ifdef __hppa__
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#define rmb() asm volatile("" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory");
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#define CPUINFO_PROC "cpu"
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#endif
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#ifdef __sparc__
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#define rmb() asm volatile("":::"memory")
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#define cpu_relax() asm volatile("":::"memory")
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#define CPUINFO_PROC "cpu"
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#endif
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#ifdef __alpha__
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#define rmb() asm volatile("mb" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory")
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#define CPUINFO_PROC "cpu model"
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#endif
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#ifdef __ia64__
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#define rmb() asm volatile ("mf" ::: "memory")
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#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
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#define CPUINFO_PROC "model name"
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#endif
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#ifdef __arm__
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/*
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* Use the __kuser_memory_barrier helper in the CPU helper page. See
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* arch/arm/kernel/entry-armv.S in the kernel source for details.
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*/
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#define rmb() ((void(*)(void))0xffff0fa0)()
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#define cpu_relax() asm volatile("":::"memory")
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#define CPUINFO_PROC "Processor"
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#endif
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#ifdef __aarch64__
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#define rmb() asm volatile("dmb ld" ::: "memory")
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#define cpu_relax() asm volatile("yield" ::: "memory")
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#endif
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#ifdef __mips__
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#define rmb() asm volatile( \
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".set mips2\n\t" \
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"sync\n\t" \
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".set mips0" \
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: /* no output */ \
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: /* no input */ \
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: "memory")
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#define cpu_relax() asm volatile("" ::: "memory")
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#define CPUINFO_PROC "cpu model"
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#endif
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <linux/perf_event.h>
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#include "util/types.h"
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#include <stdbool.h>
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struct perf_mmap {
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void *base;
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int mask;
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unsigned int prev;
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};
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static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
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{
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struct perf_event_mmap_page *pc = mm->base;
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int head = pc->data_head;
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rmb();
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return head;
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}
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static inline void perf_mmap__write_tail(struct perf_mmap *md,
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unsigned long tail)
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{
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struct perf_event_mmap_page *pc = md->base;
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/*
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* ensure all reads are done before we write the tail out.
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*/
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/* mb(); */
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pc->data_tail = tail;
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}
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/*
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* prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
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* counters in the current task.
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*/
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#define PR_TASK_PERF_EVENTS_DISABLE 31
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#define PR_TASK_PERF_EVENTS_ENABLE 32
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#ifndef NSEC_PER_SEC
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# define NSEC_PER_SEC 1000000000ULL
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#endif
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static inline unsigned long long rdclock(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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}
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/*
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* Pick up some kernel type conventions:
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*/
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#define __user
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#define asmlinkage
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define min(x, y) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void) (&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; })
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static inline int
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sys_perf_event_open(struct perf_event_attr *attr,
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pid_t pid, int cpu, int group_fd,
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unsigned long flags)
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{
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return syscall(__NR_perf_event_open, attr, pid, cpu,
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group_fd, flags);
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}
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#define MAX_COUNTERS 256
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#define MAX_NR_CPUS 256
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struct ip_callchain {
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u64 nr;
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u64 ips[0];
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};
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struct branch_flags {
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u64 mispred:1;
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u64 predicted:1;
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u64 reserved:62;
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};
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struct branch_entry {
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u64 from;
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u64 to;
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struct branch_flags flags;
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};
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struct branch_stack {
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u64 nr;
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struct branch_entry entries[0];
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};
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extern bool perf_host, perf_guest;
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extern const char perf_version_string[];
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void pthread__unblock_sigwinch(void);
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#include "util/target.h"
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enum perf_call_graph_mode {
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CALLCHAIN_NONE,
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CALLCHAIN_FP,
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CALLCHAIN_DWARF
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};
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struct perf_record_opts {
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struct perf_target target;
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int call_graph;
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bool group;
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bool inherit_stat;
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bool no_delay;
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bool no_inherit;
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bool no_samples;
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bool pipe_output;
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bool raw_samples;
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bool sample_address;
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bool sample_time;
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bool sample_id_all_missing;
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bool exclude_guest_missing;
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bool period;
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unsigned int freq;
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unsigned int mmap_pages;
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unsigned int user_freq;
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u64 branch_stack;
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u64 default_interval;
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u64 user_interval;
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u16 stack_dump_size;
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};
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#endif
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