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authorSteven Rostedt (Google) <rostedt@goodmis.org>2022-07-05 18:45:06 -0400
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-07-24 19:11:17 -0400
commitded4a2f1ae608772dd95e819f04bbaba1f0e78b1 (patch)
tree3185ee04226e9c3fd75bc0cc5e12ca8bb2b819b2 /net/mac80211
parent74003fc4ae7619ac5a7bec8748a14f3a8655f3ea (diff)
downloadlinux-ded4a2f1ae608772dd95e819f04bbaba1f0e78b1.tar.bz2
mac80211: 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/20220705224751.271015450@goodmis.org Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/trace_msg.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/mac80211/trace_msg.h b/net/mac80211/trace_msg.h
index 40141df09f25..c9dbe9aab7bd 100644
--- a/net/mac80211/trace_msg.h
+++ b/net/mac80211/trace_msg.h
@@ -24,13 +24,11 @@ DECLARE_EVENT_CLASS(mac80211_msg_event,
TP_ARGS(vaf),
TP_STRUCT__entry(
- __dynamic_array(char, msg, MAX_MSG_LEN)
+ __vstring(msg, vaf->fmt, vaf->va)
),
TP_fast_assign(
- WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
- MAX_MSG_LEN, vaf->fmt,
- *vaf->va) >= MAX_MSG_LEN);
+ __assign_vstr(msg, vaf->fmt, vaf->va);
),
TP_printk("%s", __get_str(msg))