linux-kernel - [PATCH v5 4/6] arch/x86: kprobes: Use text_alloc() and text

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Date:   Fri, 24 Jul 2020 08:05:51 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        linux-mm@...ck.org, Andi Kleen <ak@...ux.intel.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        "H. Peter Anvin" <hpa@...or.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH v5 4/6] arch/x86: kprobes: Use text_alloc() and text_free()

Use text_alloc() and text_free() to implement alloc_insn_page() and
free_insn_page().

Cc: linux-mm@...ck.org
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>Im
---
 arch/x86/kernel/kprobes/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index ada39ddbc922..9e57452b3a51 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -423,7 +423,7 @@ void *alloc_insn_page(void)
 {
 	void *page;
 
-	page = module_alloc(PAGE_SIZE);
+	page = text_alloc(PAGE_SIZE);
 	if (!page)
 		return NULL;
 
@@ -446,7 +446,7 @@ void *alloc_insn_page(void)
 /* Recover page to RW mode before releasing it */
 void free_insn_page(void *page)
 {
-	module_memfree(page);
+	text_free(page);
 }
 
 static int arch_copy_kprobe(struct kprobe *p)
-- 
2.25.1