linux-kernel - [for-next][PATCH 1/2] powerpc/thp: tracing: Hide hugepage events under CONFIG_PPC_BOOK3S

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250726141649.618389869@kernel.org>
Date: Sat, 26 Jul 2025 10:16:05 -0400
From: Steven Rostedt <rostedt@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Michael Ellerman <mpe@...erman.id.au>,
 David Hildenbrand <david@...hat.com>,
 Madhavan Srinivasan <maddy@...ux.ibm.com>
Subject: [for-next][PATCH 1/2] powerpc/thp: tracing: Hide hugepage events under CONFIG_PPC_BOOK3S_64

From: Steven Rostedt <rostedt@...dmis.org>

The events hugepage_set_pmd, hugepage_set_pud, hugepage_update_pmd and
hugepage_update_pud are only called when CONFIG_PPC_BOOK3S_64 is defined.
As each event can take up to 5K regardless if they are used or not, it's
best not to define them when they are not used. Add #ifdef around these
events when they are not used.

Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/20250612101259.0ad43e48@batman.local.home
Acked-by: David Hildenbrand <david@...hat.com>
Acked-by: Madhavan Srinivasan <maddy@...ux.ibm.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 include/trace/events/thp.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/trace/events/thp.h b/include/trace/events/thp.h
index f50048af5fcc..c8fe879d5828 100644
--- a/include/trace/events/thp.h
+++ b/include/trace/events/thp.h
@@ -8,6 +8,7 @@
 #include <linux/types.h>
 #include <linux/tracepoint.h>
 
+#ifdef CONFIG_PPC_BOOK3S_64
 DECLARE_EVENT_CLASS(hugepage_set,
 
 	    TP_PROTO(unsigned long addr, unsigned long pte),
@@ -66,6 +67,7 @@ DEFINE_EVENT(hugepage_update, hugepage_update_pud,
 	    TP_PROTO(unsigned long addr, unsigned long pud, unsigned long clr, unsigned long set),
 	    TP_ARGS(addr, pud, clr, set)
 );
+#endif /* CONFIG_PPC_BOOK3S_64 */
 
 DECLARE_EVENT_CLASS(migration_pmd,
 
-- 
2.47.2