From 787dbea11a5d6843999ff71a3fb9aa1ed6d5d889 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Thu, 21 Jul 2022 20:55:09 +0100
Subject: profile: setup_profiling_timer() is moslty not implemented
The setup_profiling_timer() is mostly un-implemented by many
architectures. In many places it isn't guarded by CONFIG_PROFILE which is
needed for it to be used. Make it a weak symbol in kernel/profile.c and
remove the 'return -EINVAL' implementations from the kenrel.
There are a couple of architectures which do return 0 from the
setup_profiling_timer() function but they don't seem to do anything else
with it. To keep the /proc compatibility for now, leave these for a
future update or removal.
On ARM, this fixes the following sparse warning:
arch/arm/kernel/smp.c:793:5: warning: symbol 'setup_profiling_timer' was not declared. Should it be static?
Link: https://lkml.kernel.org/r/20220721195509.418205-1-ben-linux@fluff.org
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/parisc/kernel/smp.c | 7 -------
1 file changed, 7 deletions(-)
(limited to 'arch/parisc/kernel/smp.c')
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 24d0744c3b3a..7dbd92cafae3 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -513,10 +513,3 @@ void __cpu_die(unsigned int cpu)
pdc_cpu_rendezvous_unlock();
}
-
-#ifdef CONFIG_PROC_FS
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-#endif
--
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