Messages in this thread Patch in this message | | | From | David Sharp <> | Subject | [PATCH v6 4/6] ftrace: Change unsigned long type of ring_buffer_oldest_event_ts() to u64 | Date | Thu, 11 Oct 2012 16:27:54 -0700 |
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From: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
ring_buffer_oldest_event_ts() should return a value of u64 type, because ring_buffer_per_cpu->buffer_page->buffer_data_page->time_stamp is u64 type.
Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Vaibhav Nagarnaik <vnagarnaik@google.com> Signed-off-by: David Sharp <dhsharp@google.com> --- include/linux/ring_buffer.h | 2 +- kernel/trace/ring_buffer.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 6c8835f..c68a09a 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -159,7 +159,7 @@ int ring_buffer_record_is_on(struct ring_buffer *buffer); void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu); void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu); -unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu); +u64 ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_entries(struct ring_buffer *buffer); unsigned long ring_buffer_overruns(struct ring_buffer *buffer); diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 49491fa..db3806e 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -2925,12 +2925,12 @@ rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer) * @buffer: The ring buffer * @cpu: The per CPU buffer to read from. */ -unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu) +u64 ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu) { unsigned long flags; struct ring_buffer_per_cpu *cpu_buffer; struct buffer_page *bpage; - unsigned long ret; + u64 ret; if (!cpumask_test_cpu(cpu, buffer->cpumask)) return 0; -- 1.7.7.3
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