Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux...
authorLinus Torvalds <torvalds@linux-foundation.org>
Sat, 5 Sep 2009 20:48:37 +0000 (13:48 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 5 Sep 2009 20:48:37 +0000 (13:48 -0700)
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf_counter/powerpc: Fix cache event codes for POWER7
  perf_counter: Fix /0 bug in swcounters
  perf_counters: Increase paranoia level

arch/powerpc/kernel/power7-pmu.c
kernel/perf_counter.c

index 388cf57..018d094 100644 (file)
@@ -317,7 +317,7 @@ static int power7_generic_events[] = {
  */
 static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
        [C(L1D)] = {            /*      RESULT_ACCESS   RESULT_MISS */
-               [C(OP_READ)] = {        0x400f0,        0xc880  },
+               [C(OP_READ)] = {        0xc880,         0x400f0 },
                [C(OP_WRITE)] = {       0,              0x300f0 },
                [C(OP_PREFETCH)] = {    0xd8b8,         0       },
        },
@@ -327,8 +327,8 @@ static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
                [C(OP_PREFETCH)] = {    0x408a,         0       },
        },
        [C(LL)] = {             /*      RESULT_ACCESS   RESULT_MISS */
-               [C(OP_READ)] = {        0x6080,         0x6084  },
-               [C(OP_WRITE)] = {       0x6082,         0x6086  },
+               [C(OP_READ)] = {        0x16080,        0x26080 },
+               [C(OP_WRITE)] = {       0x16082,        0x26082 },
                [C(OP_PREFETCH)] = {    0,              0       },
        },
        [C(DTLB)] = {           /*      RESULT_ACCESS   RESULT_MISS */
index f274e19..d7cbc57 100644 (file)
@@ -50,7 +50,7 @@ static atomic_t nr_task_counters __read_mostly;
  *  1 - disallow cpu counters to unpriv
  *  2 - disallow kernel profiling to unpriv
  */
-int sysctl_perf_counter_paranoid __read_mostly;
+int sysctl_perf_counter_paranoid __read_mostly = 1;
 
 static inline bool perf_paranoid_cpu(void)
 {
@@ -4066,6 +4066,7 @@ perf_counter_alloc(struct perf_counter_attr *attr,
        hwc->sample_period = attr->sample_period;
        if (attr->freq && attr->sample_freq)
                hwc->sample_period = 1;
+       hwc->last_period = hwc->sample_period;
 
        atomic64_set(&hwc->period_left, hwc->sample_period);