diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2021-12-23 16:04:39 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-11 13:58:49 +0100 |
| commit | e9c3f28e2b9eaff371db65e4bd7ee170616147b4 (patch) | |
| tree | 79294fb114341f41e9e205be0a3a6110f2fe9253 /kernel | |
| parent | 24bb91f9536f79a13f85cfaae59be41fc8d9380d (diff) | |
tracing: Tag trace_percpu_buffer as a percpu pointer
commit f28439db470cca8b6b082239314e9fd10bd39034 upstream.
Tag trace_percpu_buffer as a percpu pointer to resolve warnings
reported by sparse:
/linux/kernel/trace/trace.c:3218:46: warning: incorrect type in initializer (different address spaces)
/linux/kernel/trace/trace.c:3218:46: expected void const [noderef] __percpu *__vpp_verify
/linux/kernel/trace/trace.c:3218:46: got struct trace_buffer_struct *
/linux/kernel/trace/trace.c:3234:9: warning: incorrect type in initializer (different address spaces)
/linux/kernel/trace/trace.c:3234:9: expected void const [noderef] __percpu *__vpp_verify
/linux/kernel/trace/trace.c:3234:9: got int *
Link: https://lkml.kernel.org/r/ebabd3f23101d89cb75671b68b6f819f5edc830b.1640255304.git.naveen.n.rao@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 07d777fe8c398 ("tracing: Add percpu buffers for trace_printk()")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index d72b38c49c50..17e337a22c23 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2812,7 +2812,7 @@ struct trace_buffer_struct { char buffer[4][TRACE_BUF_SIZE]; }; -static struct trace_buffer_struct *trace_percpu_buffer; +static struct trace_buffer_struct __percpu *trace_percpu_buffer; /* * Thise allows for lockless recording. If we're nested too deeply, then @@ -2841,7 +2841,7 @@ static void put_trace_buf(void) static int alloc_percpu_trace_buffer(void) { - struct trace_buffer_struct *buffers; + struct trace_buffer_struct __percpu *buffers; buffers = alloc_percpu(struct trace_buffer_struct); if (WARN(!buffers, "Could not allocate percpu trace_printk buffer")) |