1. 20 Feb, 2013 1 commit
  2. 24 Jan, 2013 2 commits
  3. 24 Oct, 2012 2 commits
  4. 04 Oct, 2012 1 commit
  5. 19 Sep, 2012 1 commit
  6. 04 Sep, 2012 1 commit
  7. 13 Aug, 2012 1 commit
  8. 26 Jul, 2012 1 commit
  9. 06 Jul, 2012 1 commit
  10. 05 Jul, 2012 3 commits
  11. 07 Jun, 2012 1 commit
  12. 06 Jun, 2012 8 commits
  13. 09 May, 2012 1 commit
  14. 16 Mar, 2012 1 commit
  15. 12 Mar, 2012 2 commits
    • 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
    • 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
  16. 05 Mar, 2012 4 commits
  17. 23 Dec, 2011 1 commit
  18. 21 Dec, 2011 2 commits
  19. 06 Dec, 2011 2 commits
  20. 05 Dec, 2011 1 commit
  21. 31 Oct, 2011 1 commit
    • Paul Gortmaker's avatar
      x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE · 69c60c88
      Paul Gortmaker authored
      
      
      These files were implicitly getting EXPORT_SYMBOL via device.h
      which was including module.h, but that will be fixed up shortly.
      
      By fixing these now, we can avoid seeing things like:
      
      arch/x86/kernel/rtc.c:29: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’
      arch/x86/kernel/pci-dma.c:20: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’
      arch/x86/kernel/e820.c:69: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_GPL’
      
      [ with input from Randy Dunlap <rdunlap@xenotime.net> and also
        from Stephen Rothwell <sfr@canb.auug.org.au> ]
      
      Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
      69c60c88
  22. 10 Oct, 2011 1 commit
  23. 26 Sep, 2011 1 commit