linux-kernel - [PATCH] mm/thp: Drop unused trace events hugepage

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Date:   Fri,  7 Jan 2022 14:35:51 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-mm@...ck.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        "Kirill A . Shutemov" <kirill@...temov.name>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm/thp: Drop unused trace events hugepage_[invalidate|splitting]

The trace events hugepage_[invalidate|splitting], were added via the commit
9e813308a5c1 ("powerpc/thp: Add tracepoints to track hugepage invalidate").
Afterwards their call sites i.e trace_hugepage_[invalidate|splitting] were
just dropped off, leaving these trace points unused.

Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc: Kirill A. Shutemov <kirill@...temov.name>
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
This applies on v5.16-rc8

trace_hugepage_splitting() dropped via the commit 7aa9a23c69ea
trace_hugepage_invalidate() dropped via the commit 7900757ce1b4

 include/trace/events/thp.h | 36 ------------------------------------
 1 file changed, 36 deletions(-)

diff --git a/include/trace/events/thp.h b/include/trace/events/thp.h
index d7fbbe551841..ffa4b37d02a9 100644
--- a/include/trace/events/thp.h
+++ b/include/trace/events/thp.h
@@ -8,24 +8,6 @@
 #include <linux/types.h>
 #include <linux/tracepoint.h>
 
-TRACE_EVENT(hugepage_invalidate,
-
-	    TP_PROTO(unsigned long addr, unsigned long pte),
-	    TP_ARGS(addr, pte),
-	    TP_STRUCT__entry(
-		    __field(unsigned long, addr)
-		    __field(unsigned long, pte)
-		    ),
-
-	    TP_fast_assign(
-		    __entry->addr = addr;
-		    __entry->pte = pte;
-		    ),
-
-	    TP_printk("hugepage invalidate at addr 0x%lx and pte = 0x%lx",
-		      __entry->addr, __entry->pte)
-);
-
 TRACE_EVENT(hugepage_set_pmd,
 
 	    TP_PROTO(unsigned long addr, unsigned long pmd),
@@ -65,24 +47,6 @@ TRACE_EVENT(hugepage_update,
 
 	    TP_printk("hugepage update at addr 0x%lx and pte = 0x%lx clr = 0x%lx, set = 0x%lx", __entry->addr, __entry->pte, __entry->clr, __entry->set)
 );
-TRACE_EVENT(hugepage_splitting,
-
-	    TP_PROTO(unsigned long addr, unsigned long pte),
-	    TP_ARGS(addr, pte),
-	    TP_STRUCT__entry(
-		    __field(unsigned long, addr)
-		    __field(unsigned long, pte)
-		    ),
-
-	    TP_fast_assign(
-		    __entry->addr = addr;
-		    __entry->pte = pte;
-		    ),
-
-	    TP_printk("hugepage splitting at addr 0x%lx and pte = 0x%lx",
-		      __entry->addr, __entry->pte)
-);
-
 #endif /* _TRACE_THP_H */
 
 /* This part must be outside protection */
-- 
2.25.1