linux-kernel - [PATCH RFC 09/10] ftrace: Use module writable address

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Message-Id: <20201120202426.18009-10-rick.p.edgecombe@intel.com>
Date:   Fri, 20 Nov 2020 12:24:25 -0800
From:   Rick Edgecombe <rick.p.edgecombe@...el.com>
To:     akpm@...ux-foundation.org, jeyu@...nel.org, bpf@...r.kernel.org,
        ast@...nel.org, daniel@...earbox.net, luto@...nel.org,
        dave.hansen@...ux.intel.com, peterz@...radead.org, x86@...nel.org,
        rppt@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        dan.j.williams@...el.com
Cc:     elena.reshetova@...el.com, ira.weiny@...el.com,
        Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: [PATCH RFC 09/10] ftrace: Use module writable address

Use the module writable address to accommodate arch's that have a
separate writable address for perm_alloc.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
---
 kernel/trace/ftrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 8185f7240095..ea6377108bab 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -6134,7 +6134,7 @@ static int ftrace_process_locs(struct module *mod,
 	if (!count)
 		return 0;
 
-	sort(start, count, sizeof(*start),
+	sort(module_adjust_writable_addr(start), count, sizeof(*start),
 	     ftrace_cmp_ips, NULL);
 
 	start_pg = ftrace_allocate_pages(count);
-- 
2.20.1