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  1. Mar 13, 2012
    • Ingo Molnar's avatar
      Merge branch 'perf/hw-branch-sampling' into perf/core · bea95c15
      Ingo Molnar authored 
      

Merge reason: The 'perf record -b' hardware branch sampling feature is ready for upstream.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      bea95c15
    • Stephane Eranian's avatar
      perf report: Fix annotate double quit issue in branch view mode · 24bff2dc
      Stephane Eranian authored 
      

This patch fixes perf report to not go back two levels when
pressing the 'q' key while annotating in branch view mode.

When pressing 'q' in annotate mode and if the branch source
and target belong to different functions, perf now brings
up the annotation popup menu again to offer the option to
annotate the other branch source or target.

As part of the code restructuring in perf_evsel__hists_browse()
we also fix a memory leak on options[] in case of error.

Signed-off-by: default avatarStephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: acme@redhat.com
Cc: asharma@fb.com
Cc: ravitillo@lbl.gov
Cc: vweaver1@eecs.utk.edu
Cc: khandual@linux.vnet.ibm.com
Cc: dsahern@gmail.com
Link: http://lkml.kernel.org/r/1331565210-10865-3-git-send-email-eranian@google.com


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      24bff2dc
    • Stephane Eranian's avatar
      perf report: Remove duplicate annotate choice in branch view mode · 8bcd65fd
      Stephane Eranian authored 
      

This patch removes the duplicated annotate selection when
browsing in branch view mode. If the sym and dso oof the branch
source and target are the same, then only one annotate choice is
proposed.

Signed-off-by: default avatarStephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: acme@redhat.com
Cc: asharma@fb.com
Cc: ravitillo@lbl.gov
Cc: vweaver1@eecs.utk.edu
Cc: khandual@linux.vnet.ibm.com
Cc: dsahern@gmail.com
Link: http://lkml.kernel.org/r/1331565210-10865-2-git-send-email-eranian@google.com


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      8bcd65fd
    • Peter Zijlstra's avatar
      perf/x86: Prettify pmu config literals · f9b4eeb8
      Peter Zijlstra authored 
      

I got somewhat tired of having to decode hex numbers..

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Stephane Eranian <eranian@google.com>
Cc: Robert Richter <robert.richter@amd.com>
Link: http://lkml.kernel.org/n/tip-0vsy1sgywc4uar3mu1szm0rg@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      f9b4eeb8
    • Ingo Molnar's avatar
      Merge branch 'perf/urgent' into perf/core · 35239e23
      Ingo Molnar authored 
      

Merge reason: We are going to queue up a dependent patch.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      35239e23
    • Peter Zijlstra's avatar
      perf/x86: Fix local vs remote memory events for NHM/WSM · 87e24f4b
      Peter Zijlstra authored 
      

Verified using the below proglet.. before:

[root@westmere ~]# perf stat -e node-stores -e node-store-misses ./numa 0
remote write

 Performance counter stats for './numa 0':

         2,101,554 node-stores
         2,096,931 node-store-misses

       5.021546079 seconds time elapsed

[root@westmere ~]# perf stat -e node-stores -e node-store-misses ./numa 1
local write

 Performance counter stats for './numa 1':

           501,137 node-stores
               199 node-store-misses

       5.124451068 seconds time elapsed

After:

[root@westmere ~]# perf stat -e node-stores -e node-store-misses ./numa 0
remote write

 Performance counter stats for './numa 0':

         2,107,516 node-stores
         2,097,187 node-store-misses

       5.012755149 seconds time elapsed

[root@westmere ~]# perf stat -e node-stores -e node-store-misses ./numa 1
local write

 Performance counter stats for './numa 1':

         2,063,355 node-stores
               165 node-store-misses

       5.082091494 seconds time elapsed

#define _GNU_SOURCE

#include <sched.h>
#include <stdio.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <dirent.h>
#include <signal.h>
#include <unistd.h>
#include <numaif.h>
#include <stdlib.h>

#define SIZE (32*1024*1024)

volatile int done;

void sig_done(int sig)
{
	done = 1;
}

int main(int argc, char **argv)
{
	cpu_set_t *mask, *mask2;
	size_t size;
	int i, err, t;
	int nrcpus = 1024;
	char *mem;
	unsigned long nodemask = 0x01; /* node 0 */
	DIR *node;
	struct dirent *de;
	int read = 0;
	int local = 0;

	if (argc < 2) {
		printf("usage: %s [0-3]\n", argv[0]);
		printf("  bit0 - local/remote\n");
		printf("  bit1 - read/write\n");
		exit(0);
	}

	switch (atoi(argv[1])) {
	case 0:
		printf("remote write\n");
		break;
	case 1:
		printf("local write\n");
		local = 1;
		break;
	case 2:
		printf("remote read\n");
		read = 1;
		break;
	case 3:
		printf("local read\n");
		local = 1;
		read = 1;
		break;
	}

	mask = CPU_ALLOC(nrcpus);
	size = CPU_ALLOC_SIZE(nrcpus);
	CPU_ZERO_S(size, mask);

	node = opendir("/sys/devices/system/node/node0/");
	if (!node)
		perror("opendir");
	while ((de = readdir(node))) {
		int cpu;

		if (sscanf(de->d_name, "cpu%d", &cpu) == 1)
			CPU_SET_S(cpu, size, mask);
	}
	closedir(node);

	mask2 = CPU_ALLOC(nrcpus);
	CPU_ZERO_S(size, mask2);
	for (i = 0; i < size; i++)
		CPU_SET_S(i, size, mask2);
	CPU_XOR_S(size, mask2, mask2, mask); // invert

	if (!local)
		mask = mask2;

	err = sched_setaffinity(0, size, mask);
	if (err)
		perror("sched_setaffinity");

	mem = mmap(0, SIZE, PROT_READ|PROT_WRITE,
			MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
	err = mbind(mem, SIZE, MPOL_BIND, &nodemask, 8*sizeof(nodemask), MPOL_MF_MOVE);
	if (err)
		perror("mbind");

	signal(SIGALRM, sig_done);
	alarm(5);

	if (!read) {
		while (!done) {
			for (i = 0; i < SIZE; i++)
				mem[i] = 0x01;
		}
	} else {
		while (!done) {
			for (i = 0; i < SIZE; i++)
				t += *(volatile char *)(mem + i);
		}
	}

	return 0;
}

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/n/tip-tq73sxus35xmqpojf7ootxgs@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      87e24f4b
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