aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/perf
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/callchain.c1
-rw-r--r--arch/powerpc/perf/hv-24x7.c2
-rw-r--r--arch/powerpc/perf/hv-gpci-requests.h4
-rw-r--r--arch/powerpc/perf/hv-gpci.c33
-rw-r--r--arch/powerpc/perf/hv-gpci.h1
-rw-r--r--arch/powerpc/perf/imc-pmu.c6
-rw-r--r--arch/powerpc/perf/req-gen/perf.h20
7 files changed, 65 insertions, 2 deletions
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index 0af051a1974e..26a31a3b661e 100644
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -68,6 +68,7 @@ perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *re
next_sp = fp[0];
if (next_sp == sp + STACK_INT_FRAME_SIZE &&
+ validate_sp(sp, current, STACK_INT_FRAME_SIZE) &&
fp[STACK_FRAME_MARKER] == STACK_FRAME_REGS_MARKER) {
/*
* This looks like an interrupt frame for an
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 2bb798918483..e6eb2b4cf97e 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -1326,7 +1326,7 @@ static int h_24x7_event_init(struct perf_event *event)
}
domain = event_get_domain(event);
- if (domain >= HV_PERF_DOMAIN_MAX) {
+ if (domain == 0 || domain >= HV_PERF_DOMAIN_MAX) {
pr_devel("invalid domain %d\n", domain);
return -EINVAL;
}
diff --git a/arch/powerpc/perf/hv-gpci-requests.h b/arch/powerpc/perf/hv-gpci-requests.h
index 8965b4463d43..5e86371a20c7 100644
--- a/arch/powerpc/perf/hv-gpci-requests.h
+++ b/arch/powerpc/perf/hv-gpci-requests.h
@@ -79,6 +79,7 @@ REQUEST(__field(0, 8, partition_id)
)
#include I(REQUEST_END)
+#ifdef ENABLE_EVENTS_COUNTERINFO_V6
/*
* Not available for counter_info_version >= 0x8, use
* run_instruction_cycles_by_partition(0x100) instead.
@@ -92,6 +93,7 @@ REQUEST(__field(0, 8, partition_id)
__count(0x10, 8, cycles)
)
#include I(REQUEST_END)
+#endif
#define REQUEST_NAME system_performance_capabilities
#define REQUEST_NUM 0x40
@@ -103,6 +105,7 @@ REQUEST(__field(0, 1, perf_collect_privileged)
)
#include I(REQUEST_END)
+#ifdef ENABLE_EVENTS_COUNTERINFO_V6
#define REQUEST_NAME processor_bus_utilization_abc_links
#define REQUEST_NUM 0x50
#define REQUEST_IDX_KIND "hw_chip_id=?"
@@ -194,6 +197,7 @@ REQUEST(__field(0, 4, phys_processor_idx)
__count(0x28, 8, instructions_completed)
)
#include I(REQUEST_END)
+#endif
/* Processor_core_power_mode (0x95) skipped, no counters */
/* Affinity_domain_information_by_virtual_processor (0xA0) skipped,
diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c
index 160b86d9d819..126409bb5626 100644
--- a/arch/powerpc/perf/hv-gpci.c
+++ b/arch/powerpc/perf/hv-gpci.c
@@ -74,7 +74,7 @@ static struct attribute_group format_group = {
static struct attribute_group event_group = {
.name = "events",
- .attrs = hv_gpci_event_attrs,
+ /* .attrs is set in init */
};
#define HV_CAPS_ATTR(_name, _format) \
@@ -292,6 +292,7 @@ static int hv_gpci_init(void)
int r;
unsigned long hret;
struct hv_perf_caps caps;
+ struct hv_gpci_request_buffer *arg;
hv_gpci_assert_offsets_correct();
@@ -310,6 +311,36 @@ static int hv_gpci_init(void)
/* sampling not supported */
h_gpci_pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
+ arg = (void *)get_cpu_var(hv_gpci_reqb);
+ memset(arg, 0, HGPCI_REQ_BUFFER_SIZE);
+
+ /*
+ * hcall H_GET_PERF_COUNTER_INFO populates the output
+ * counter_info_version value based on the system hypervisor.
+ * Pass the counter request 0x10 corresponds to request type
+ * 'Dispatch_timebase_by_processor', to get the supported
+ * counter_info_version.
+ */
+ arg->params.counter_request = cpu_to_be32(0x10);
+
+ r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO,
+ virt_to_phys(arg), HGPCI_REQ_BUFFER_SIZE);
+ if (r) {
+ pr_devel("hcall failed, can't get supported counter_info_version: 0x%x\n", r);
+ arg->params.counter_info_version_out = 0x8;
+ }
+
+ /*
+ * Use counter_info_version_out value to assign
+ * required hv-gpci event list.
+ */
+ if (arg->params.counter_info_version_out >= 0x8)
+ event_group.attrs = hv_gpci_event_attrs;
+ else
+ event_group.attrs = hv_gpci_event_attrs_v6;
+
+ put_cpu_var(hv_gpci_reqb);
+
r = perf_pmu_register(&h_gpci_pmu, h_gpci_pmu.name, -1);
if (r)
return r;
diff --git a/arch/powerpc/perf/hv-gpci.h b/arch/powerpc/perf/hv-gpci.h
index a3053eda5dcc..060e464d35c6 100644
--- a/arch/powerpc/perf/hv-gpci.h
+++ b/arch/powerpc/perf/hv-gpci.h
@@ -53,6 +53,7 @@ enum {
#define REQUEST_FILE "../hv-gpci-requests.h"
#define NAME_LOWER hv_gpci
#define NAME_UPPER HV_GPCI
+#define ENABLE_EVENTS_COUNTERINFO_V6
#include "req-gen/perf.h"
#undef REQUEST_FILE
#undef NAME_LOWER
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 555322677074..65ee4fe863b2 100644
--- a/arch/powerpc/perf/imc-pmu.c
+++ b/arch/powerpc/perf/imc-pmu.c
@@ -261,6 +261,8 @@ static int update_events_in_group(struct device_node *node, struct imc_pmu *pmu)
attr_group->attrs = attrs;
do {
ev_val_str = kasprintf(GFP_KERNEL, "event=0x%x", pmu->events[i].value);
+ if (!ev_val_str)
+ continue;
dev_str = device_str_attr_create(pmu->events[i].name, ev_val_str);
if (!dev_str)
continue;
@@ -268,6 +270,8 @@ static int update_events_in_group(struct device_node *node, struct imc_pmu *pmu)
attrs[j++] = dev_str;
if (pmu->events[i].scale) {
ev_scale_str = kasprintf(GFP_KERNEL, "%s.scale", pmu->events[i].name);
+ if (!ev_scale_str)
+ continue;
dev_str = device_str_attr_create(ev_scale_str, pmu->events[i].scale);
if (!dev_str)
continue;
@@ -277,6 +281,8 @@ static int update_events_in_group(struct device_node *node, struct imc_pmu *pmu)
if (pmu->events[i].unit) {
ev_unit_str = kasprintf(GFP_KERNEL, "%s.unit", pmu->events[i].name);
+ if (!ev_unit_str)
+ continue;
dev_str = device_str_attr_create(ev_unit_str, pmu->events[i].unit);
if (!dev_str)
continue;
diff --git a/arch/powerpc/perf/req-gen/perf.h b/arch/powerpc/perf/req-gen/perf.h
index fa9bc804e67a..6b2a59fefffa 100644
--- a/arch/powerpc/perf/req-gen/perf.h
+++ b/arch/powerpc/perf/req-gen/perf.h
@@ -139,6 +139,26 @@ PMU_EVENT_ATTR_STRING( \
#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
r_fields
+/* Generate event list for platforms with counter_info_version 0x6 or below */
+static __maybe_unused struct attribute *hv_gpci_event_attrs_v6[] = {
+#include REQUEST_FILE
+ NULL
+};
+
+/*
+ * Based on getPerfCountInfo v1.018 documentation, some of the hv-gpci
+ * events were deprecated for platform firmware that supports
+ * counter_info_version 0x8 or above.
+ * Those deprecated events are still part of platform firmware that
+ * support counter_info_version 0x6 and below. As per the getPerfCountInfo
+ * v1.018 documentation there is no counter_info_version 0x7.
+ * Undefining macro ENABLE_EVENTS_COUNTERINFO_V6, to disable the addition of
+ * deprecated events in "hv_gpci_event_attrs" attribute group, for platforms
+ * that supports counter_info_version 0x8 or above.
+ */
+#undef ENABLE_EVENTS_COUNTERINFO_V6
+
+/* Generate event list for platforms with counter_info_version 0x8 or above*/
static __maybe_unused struct attribute *hv_gpci_event_attrs[] = {
#include REQUEST_FILE
NULL
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-22 08:53:51 +0000