diff options
| -rw-r--r-- | arch/powerpc/perf/hv-24x7.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index fe74221a35ff..676fb2f93825 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -161,6 +161,7 @@ static char *event_desc(struct hv_24x7_event_data *ev, int *len) { unsigned nl = be16_to_cpu(ev->event_name_len); __be16 *desc_len = (__be16 *)(ev->remainder + nl - 2); + *len = be16_to_cpu(*desc_len) - 2; return (char *)ev->remainder + nl; } @@ -171,6 +172,7 @@ static char *event_long_desc(struct hv_24x7_event_data *ev, int *len) __be16 *desc_len_ = (__be16 *)(ev->remainder + nl - 2); unsigned desc_len = be16_to_cpu(*desc_len_); __be16 *long_desc_len = (__be16 *)(ev->remainder + nl + desc_len - 2); + *len = be16_to_cpu(*long_desc_len) - 2; return (char *)ev->remainder + nl + desc_len; } @@ -248,14 +250,12 @@ static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096, unsigned long index) { pr_devel("h_get_24x7_catalog_page(0x%lx, %lu, %lu)", - phys_4096, - version, - index); + phys_4096, version, index); + WARN_ON(!IS_ALIGNED(phys_4096, 4096)); + return plpar_hcall_norets(H_GET_24X7_CATALOG_PAGE, - phys_4096, - version, - index); + phys_4096, version, index); } static unsigned long h_get_24x7_catalog_page(char page[], @@ -309,6 +309,7 @@ static ssize_t device_show_string(struct device *dev, struct dev_ext_attribute *d; d = container_of(attr, struct dev_ext_attribute, attr); + return sprintf(buf, "%s\n", (char *)d->var); } @@ -323,6 +324,7 @@ static struct attribute *device_str_attr_create_(char *name, char *str) attr->attr.attr.name = name; attr->attr.attr.mode = 0444; attr->attr.show = device_show_string; + return &attr->attr.attr; } @@ -396,7 +398,6 @@ static struct attribute *event_to_attr(unsigned ix, a_ev_name = kasprintf(GFP_KERNEL, "%.*s%s__%d", (int)event_name_len, ev_name, ev_suffix, nonce); - if (!a_ev_name) goto out_val; @@ -881,6 +882,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, uint64_t catalog_version_num = 0; void *page = kmem_cache_alloc(hv_page_cache, GFP_USER); struct hv_24x7_catalog_page_0 *page_0 = page; + if (!page) return -ENOMEM; @@ -1077,7 +1079,6 @@ static unsigned long single_24x7_request(struct perf_event *event, u64 *count) } resb = &result_buffer->results[0]; - *count = be64_to_cpu(resb->elements[0].element_data[0]); out: return ret; @@ -1175,6 +1176,7 @@ static void h_24x7_event_read(struct perf_event *event) { s64 prev; u64 now; + now = h_24x7_get_value(event); prev = local64_xchg(&event->hw.prev_count, now); local64_add(now - prev, &event->count); |