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| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-07-05 18:45:00 -0400 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-07-15 17:44:41 -0400 |
| commit | 0ba4c9dede106c3e7ad2bb7e23eaa1393adc43a0 (patch) | |
| tree | a84631bfc6984a2e9f87928f2c7ef53f46a02336 /drivers/usb | |
| parent | 1b756b372fbf6ae5bcbbb4a5b7aa271483902fa5 (diff) | |
| download | lwn-0ba4c9dede106c3e7ad2bb7e23eaa1393adc43a0.tar.gz lwn-0ba4c9dede106c3e7ad2bb7e23eaa1393adc43a0.zip | |
xhci: tracing: Use the new __vstring() helper
Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.
Link: https://lkml.kernel.org/r/20220705224750.172301548@goodmis.org
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-trace.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index a5da02077297..61e93a3540a7 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -28,9 +28,9 @@ DECLARE_EVENT_CLASS(xhci_log_msg, TP_PROTO(struct va_format *vaf), TP_ARGS(vaf), - TP_STRUCT__entry(__dynamic_array(char, msg, XHCI_MSG_MAX)), + TP_STRUCT__entry(__vstring(msg, vaf->fmt, vaf->va)), TP_fast_assign( - vsnprintf(__get_str(msg), XHCI_MSG_MAX, vaf->fmt, *vaf->va); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk("%s", __get_str(msg)) ); |