powerpc/perf/hv-24x7: Catalog version number is be64, not be32

The catalog version number was changed from a be32 (with proceeding
32bits of padding) to a be64, update the code to treat it as a be64

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 95a67f8..e0766b8 100644 (file)
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -171,7 +171,7 @@ static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096,
 }
 
 static unsigned long h_get_24x7_catalog_page(char page[],
-                                            u32 version, u32 index)
+                                            u64 version, u32 index)
 {
        return h_get_24x7_catalog_page_(virt_to_phys(page),
                                        version, index);
@@ -185,7 +185,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
        ssize_t ret = 0;
        size_t catalog_len = 0, catalog_page_len = 0, page_count = 0;
        loff_t page_offset = 0;
-       uint32_t catalog_version_num = 0;
+       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)
@@ -197,7 +197,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
                goto e_free;
        }
 
-       catalog_version_num = be32_to_cpu(page_0->version);
+       catalog_version_num = be64_to_cpu(page_0->version);
        catalog_page_len = be32_to_cpu(page_0->length);
        catalog_len = catalog_page_len * 4096;
 
@@ -220,8 +220,9 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
                                page, 4096, page_offset * 4096);
 e_free:
        if (hret)
-               pr_err("h_get_24x7_catalog_page(ver=%d, page=%lld) failed: rc=%ld\n",
-                               catalog_version_num, page_offset, hret);
+               pr_err("h_get_24x7_catalog_page(ver=%lld, page=%lld) failed:"
+                      " rc=%ld\n",
+                      catalog_version_num, page_offset, hret);
        kfree(page);
 
        pr_devel("catalog_read: offset=%lld(%lld) count=%zu(%zu) catalog_len=%zu(%zu) => %zd\n",
@@ -255,7 +256,7 @@ e_free:                                                             \
 static DEVICE_ATTR_RO(_name)
 
 PAGE_0_ATTR(catalog_version, "%lld\n",
-               (unsigned long long)be32_to_cpu(page_0->version));
+               (unsigned long long)be64_to_cpu(page_0->version));
 PAGE_0_ATTR(catalog_len, "%lld\n",
                (unsigned long long)be32_to_cpu(page_0->length) * 4096);
 static BIN_ATTR_RO(catalog, 0/* real length varies */);