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Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (47 commits)
  perf report: Add --symbols parameter
  perf report: Add --comms parameter
  perf report: Add --dsos parameter
  perf_counter tools: Adjust only prelinked symbol's addresses
  perf_counter: Provide a way to enable counters on exec
  perf_counter tools: Reduce perf stat measurement overhead/skew
  perf stat: Use percentages for scaling output
  perf_counter, x86: Update x86_pmu after WARN()
  perf stat: Micro-optimize the code: memcpy is only required if no event is selected and !null_run
  perf stat: Improve output
  perf stat: Fix multi-run stats
  perf stat: Add -n/--null option to run without counters
  perf_counter tools: Remove dead code
  perf_counter: Complete counter swap
  perf report: Print sorted callchains per histogram entries
  perf_counter tools: Prepare a small callchain framework
  perf record: Fix unhandled io return value
  perf_counter tools: Add alias for 'l1d' and 'l1i'
  perf-report: Add bare minimum PERF_EVENT_READ parsing
  perf-report: Add modes for inherited stats and no-samples
  ...
This commit is contained in:
Linus Torvalds
2009-06-30 19:02:59 -07:00
parent 58580c8645 7bec7a9134
commit 55bcab4695
32 changed files with 1602 additions and 420 deletions
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22
arch/x86/kernel/cpu/perf_counter.c
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@@ -401,7 +401,7 @@ static const u64 amd_hw_cache_event_ids
[ C(RESULT_MISS) ] = 0x0041, /* Data Cache Misses */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x0042, /* Data Cache Refills from L2 */
[ C(RESULT_ACCESS) ] = 0x0142, /* Data Cache Refills :system */
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
@@ -912,6 +912,8 @@ x86_perf_counter_set_period(struct perf_counter *counter,
err = checking_wrmsrl(hwc->counter_base + idx,
(u64)(-left) & x86_pmu.counter_mask);
perf_counter_update_userpage(counter);
return ret;
}
@@ -969,13 +971,6 @@ fixed_mode_idx(struct perf_counter *counter, struct hw_perf_counter *hwc)
if (!x86_pmu.num_counters_fixed)
return -1;
/*
* Quirk, IA32_FIXED_CTRs do not work on current Atom processors:
*/
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
boot_cpu_data.x86_model == 28)
return -1;
event = hwc->config & ARCH_PERFMON_EVENT_MASK;
if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
@@ -1041,6 +1036,8 @@ try_generic:
x86_perf_counter_set_period(counter, hwc, idx);
x86_pmu.enable(hwc, idx);
perf_counter_update_userpage(counter);
return 0;
}
@@ -1133,6 +1130,8 @@ static void x86_pmu_disable(struct perf_counter *counter)
x86_perf_counter_update(counter, hwc, idx);
cpuc->counters[idx] = NULL;
clear_bit(idx, cpuc->used_mask);
perf_counter_update_userpage(counter);
}
/*
@@ -1428,8 +1427,6 @@ static int intel_pmu_init(void)
*/
x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl);
/*
* Install the hw-cache-events table:
*/
@@ -1499,21 +1496,22 @@ void __init init_hw_perf_counters(void)
pr_cont("%s PMU driver.\n", x86_pmu.name);
if (x86_pmu.num_counters > X86_PMC_MAX_GENERIC) {
x86_pmu.num_counters = X86_PMC_MAX_GENERIC;
WARN(1, KERN_ERR "hw perf counters %d > max(%d), clipping!",
x86_pmu.num_counters, X86_PMC_MAX_GENERIC);
x86_pmu.num_counters = X86_PMC_MAX_GENERIC;
}
perf_counter_mask = (1 << x86_pmu.num_counters) - 1;
perf_max_counters = x86_pmu.num_counters;
if (x86_pmu.num_counters_fixed > X86_PMC_MAX_FIXED) {
x86_pmu.num_counters_fixed = X86_PMC_MAX_FIXED;
WARN(1, KERN_ERR "hw perf counters fixed %d > max(%d), clipping!",
x86_pmu.num_counters_fixed, X86_PMC_MAX_FIXED);
x86_pmu.num_counters_fixed = X86_PMC_MAX_FIXED;
}
perf_counter_mask |=
((1LL << x86_pmu.num_counters_fixed)-1) << X86_PMC_IDX_FIXED;
x86_pmu.intel_ctrl = perf_counter_mask;
perf_counters_lapic_init();
register_die_notifier(&perf_counter_nmi_notifier);