提交 76a5433f 编写于 作者: K Kan Liang 提交者: Peter Zijlstra

perf/x86/intel: Support PERF_SAMPLE_DATA_PAGE_SIZE

The new sample type, PERF_SAMPLE_DATA_PAGE_SIZE, requires the virtual
address. Update the data->addr if the sample type is set.

The large PEBS is disabled with the sample type, because perf doesn't
support munmap tracking yet. The PEBS buffer for large PEBS cannot be
flushed for each munmap. Wrong page size may be calculated. The large
PEBS can be enabled later separately when munmap tracking is supported.
Signed-off-by: NKan Liang <kan.liang@linux.intel.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201001135749.2804-3-kan.liang@linux.intel.com
上级 8d97e718
......@@ -959,7 +959,8 @@ static void adaptive_pebs_record_size_update(void)
#define PERF_PEBS_MEMINFO_TYPE (PERF_SAMPLE_ADDR | PERF_SAMPLE_DATA_SRC | \
PERF_SAMPLE_PHYS_ADDR | PERF_SAMPLE_WEIGHT | \
PERF_SAMPLE_TRANSACTION)
PERF_SAMPLE_TRANSACTION | \
PERF_SAMPLE_DATA_PAGE_SIZE)
static u64 pebs_update_adaptive_cfg(struct perf_event *event)
{
......@@ -1335,6 +1336,10 @@ static u64 get_data_src(struct perf_event *event, u64 aux)
return val;
}
#define PERF_SAMPLE_ADDR_TYPE (PERF_SAMPLE_ADDR | \
PERF_SAMPLE_PHYS_ADDR | \
PERF_SAMPLE_DATA_PAGE_SIZE)
static void setup_pebs_fixed_sample_data(struct perf_event *event,
struct pt_regs *iregs, void *__pebs,
struct perf_sample_data *data,
......@@ -1449,7 +1454,7 @@ static void setup_pebs_fixed_sample_data(struct perf_event *event,
}
if ((sample_type & (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR)) &&
if ((sample_type & PERF_SAMPLE_ADDR_TYPE) &&
x86_pmu.intel_cap.pebs_format >= 1)
data->addr = pebs->dla;
......@@ -1577,7 +1582,7 @@ static void setup_pebs_adaptive_sample_data(struct perf_event *event,
if (sample_type & PERF_SAMPLE_DATA_SRC)
data->data_src.val = get_data_src(event, meminfo->aux);
if (sample_type & (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR))
if (sample_type & PERF_SAMPLE_ADDR_TYPE)
data->addr = meminfo->address;
if (sample_type & PERF_SAMPLE_TRANSACTION)
......
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