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authorRobert Richter <robert.richter@amd.com>2008-12-25 17:26:07 +0100
committerRobert Richter <robert.richter@amd.com>2009-01-07 22:41:47 +0100
commitd9928c25a6960cf128c2078a89fe6f8e0180ff60 (patch)
treea6aa4141a531beb6f5d2025d8656d9404ae64ba8 /drivers/oprofile/cpu_buffer.h
parentae735e9964b4584923f2997d98a8d80ae9c1a75c (diff)
downloadlinux-sh-d9928c25a6960cf128c2078a89fe6f8e0180ff60.tar.gz
oprofile: add op_cpu_buffer_add_data()
This function can be used to attach data to a sample. It returns the remaining free buffer size that has been reserved with op_cpu_buffer_write_reserve(). Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'drivers/oprofile/cpu_buffer.h')
-rw-r--r--drivers/oprofile/cpu_buffer.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index e634dcf2f26f..e178dd2799c4 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -78,6 +78,18 @@ int op_cpu_buffer_write_commit(struct op_entry *entry);
struct op_sample *op_cpu_buffer_read_entry(struct op_entry *entry, int cpu);
unsigned long op_cpu_buffer_entries(int cpu);
+/* returns the remaining free size of data in the entry */
+static inline
+int op_cpu_buffer_add_data(struct op_entry *entry, unsigned long val)
+{
+ if (!entry->size)
+ return 0;
+ *entry->data = val;
+ entry->size--;
+ entry->data++;
+ return entry->size;
+}
+
/* extra data flags */
#define KERNEL_CTX_SWITCH (1UL << 0)
#define IS_KERNEL (1UL << 1)