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authorBen Dooks <ben-linux@fluff.org>2022-07-21 22:55:09 +0300
committerakpm <akpm@linux-foundation.org>2022-07-30 04:12:36 +0300
commit787dbea11a5d6843999ff71a3fb9aa1ed6d5d889 (patch)
tree8d66478e7d8d053c29a077300188fcd298f2d647 /arch/arm
parent45ee6d1e935d879d86aebd1fd15afb3bc015c4a0 (diff)
downloadlinux-787dbea11a5d6843999ff71a3fb9aa1ed6d5d889.tar.xz
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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/kernel/smp.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 73fc645fc4c7..978db2d96b44 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -787,14 +787,6 @@ void panic_smp_self_stop(void)
cpu_relax();
}
-/*
- * not supported here
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
#ifdef CONFIG_CPU_FREQ
static DEFINE_PER_CPU(unsigned long, l_p_j_ref);