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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-12 13:16:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-12 13:16:52 -0700
commit4ddbac98980fe0a42cf57af5d1032e024aced6a1 (patch)
tree341d152dc1f9427d70d5b1fadafca61d22baacbb /arch
parent02a99ed6207e9a1d787bb360ef97de023c7edf4a (diff)
parent018df72dd01576ab199c6129233cdeaf1409958b (diff)
Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf_counter: Start documenting HAVE_PERF_COUNTERS requirements perf_counter: Add forward/backward attribute ABI compatibility perf record: Explicity program a default counter perf_counter: Remove PERF_TYPE_RAW special casing perf_counter: PERF_TYPE_HW_CACHE is a hardware counter too powerpc, perf_counter: Fix performance counter event types perf_counter/x86: Add a quirk for Atom processors perf_counter tools: Remove one L1-data alias
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/power7-pmu.c12
-rw-r--r--arch/x86/kernel/cpu/perf_counter.c7
2 files changed, 13 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/power7-pmu.c b/arch/powerpc/kernel/power7-pmu.c
index b3f7d1216bae..b72e7a19d054 100644
--- a/arch/powerpc/kernel/power7-pmu.c
+++ b/arch/powerpc/kernel/power7-pmu.c
@@ -294,12 +294,12 @@ static void power7_disable_pmc(unsigned int pmc, u64 mmcr[])
}
static int power7_generic_events[] = {
- [PERF_COUNT_CPU_CYCLES] = 0x1e,
- [PERF_COUNT_INSTRUCTIONS] = 2,
- [PERF_COUNT_CACHE_REFERENCES] = 0xc880, /* LD_REF_L1_LSU */
- [PERF_COUNT_CACHE_MISSES] = 0x400f0, /* LD_MISS_L1 */
- [PERF_COUNT_BRANCH_INSTRUCTIONS] = 0x10068, /* BRU_FIN */
- [PERF_COUNT_BRANCH_MISSES] = 0x400f6, /* BR_MPRED */
+ [PERF_COUNT_HW_CPU_CYCLES] = 0x1e,
+ [PERF_COUNT_HW_INSTRUCTIONS] = 2,
+ [PERF_COUNT_HW_CACHE_REFERENCES] = 0xc880, /* LD_REF_L1_LSU*/
+ [PERF_COUNT_HW_CACHE_MISSES] = 0x400f0, /* LD_MISS_L1 */
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x10068, /* BRU_FIN */
+ [PERF_COUNT_HW_BRANCH_MISSES] = 0x400f6, /* BR_MPRED */
};
#define C(x) PERF_COUNT_HW_CACHE_##x
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 895c82e78455..275bc142cd5d 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -968,6 +968,13 @@ 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)))