[v1,2/3] MIPS: time: Add plat_have_sched_clock That variable That variable would allow platform to register their own sched_clock instead of csrc-r4k.

Commit Message

Dian zheng Sept. 18, 2021, 7:21 a.m. UTC

From: Dian Zheng <[e-mail]>

Signed-off-by: Jiaxun Yang <[e-mail]>
Signed-off-by: Dian Zheng <[e-mail]>
---
 arch/mips/include/asm/time.h | 3 +++
 arch/mips/kernel/csrc-r4k.c  | 5 ++---
 arch/mips/kernel/time.c      | 3 +++
 3 files changed, 8 insertions(+), 3 deletions(-)

Patch

diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h
index e855a3611d92..e235b8a27768 100644
--- a/arch/mips/include/asm/time.h
+++ b/arch/mips/include/asm/time.h
@@ -28,6 +28,9 @@  extern void plat_time_init(void);
  */
 extern unsigned int mips_hpt_frequency;
 
+/* True if platform registered sched_clock by itself */
+extern bool plat_have_sched_clock __initdata;
+
 /*
  * The performance counter IRQ on MIPS is a close relative to the timer IRQ
  * so it lives here.
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
index edc4afc080fa..b50a24da6528 100644
--- a/arch/mips/kernel/csrc-r4k.c
+++ b/arch/mips/kernel/csrc-r4k.c
@@ -122,9 +122,8 @@  int __init init_r4k_clocksource(void)
 
 	clocksource_register_hz(&clocksource_mips, mips_hpt_frequency);
 
-#ifndef CONFIG_CPU_FREQ
-	sched_clock_register(r4k_read_sched_clock, 32, mips_hpt_frequency);
-#endif
+	if (!IS_ENABLED(CONFIG_CPU_FREQ) && !plat_have_sched_clock)
+		sched_clock_register(r4k_read_sched_clock, 32, mips_hpt_frequency);
 
 	return 0;
 }
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index caa01457dce6..baf33da8c79d 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -123,6 +123,9 @@  EXPORT_SYMBOL(perf_irq);
 unsigned int mips_hpt_frequency;
 EXPORT_SYMBOL_GPL(mips_hpt_frequency);
 
+/* True if platform registered sched_clock by itself */
+bool plat_have_sched_clock __initdata;
+
 static __init int cpu_has_mfc0_count_bug(void)
 {
 	switch (current_cpu_type()) {