[PATCH 13/14] MIPS: SGI-IP27: Store cpu speed when scanning for CPUs and use it later

Thomas Bogendoerfer
2020-01-09T12:34:26Z

Remember CPU speed while scanning for available CPUs to avoid
looking it up a second time when printing CPU speed.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
arch/mips/include/asm/mach-ip27/topology.h | 1 +
arch/mips/sgi-ip27/ip27-common.h | 1 -
arch/mips/sgi-ip27/ip27-init.c | 3 ++-
arch/mips/sgi-ip27/ip27-smp.c | 2 ++
arch/mips/sgi-ip27/ip27-timer.c | 19 -------------------
5 files changed, 5 insertions(+), 21 deletions(-)

diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index 3c94ffc06a70..d66cc53feab8 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -7,6 +7,7 @@

struct cpuinfo_ip27 {
nasid_t p_nasid; /* my node ID in numa-as-id-space */
+ unsigned short p_speed; /* cpu speed in MHz */
unsigned char p_slice; /* Physical position on node board */
};

diff --git a/arch/mips/sgi-ip27/ip27-common.h b/arch/mips/sgi-ip27/ip27-common.h
index cdebf1726e4a..ed008a08464c 100644
--- a/arch/mips/sgi-ip27/ip27-common.h
+++ b/arch/mips/sgi-ip27/ip27-common.h
@@ -6,7 +6,6 @@
extern nasid_t master_nasid;

extern void cpu_node_probe(void);
-extern void cpu_time_init(void);
extern void hub_rt_clock_event_init(void);
extern void hub_rtc_init(nasid_t nasid);
extern void install_cpu_nmi_handler(int slice);
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 9822f7a8ad62..84a78bd1386a 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -83,7 +83,8 @@ void per_cpu_init(void)

per_hub_init(nasid);

- cpu_time_init();
+ pr_info("CPU %d clock is %dMHz.\n", cpu, sn_cpu_info[cpu].p_speed);
+
install_ipi();

/* Install our NMI handler if symmon hasn't installed one. */
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 3966716835ea..5d2652a1d35a 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -47,6 +47,8 @@ static int node_scan_cpus(nasid_t nasid, int highest)
set_cpu_possible(cpuid, true);
cputonasid(cpus_found) = nasid;
cputoslice(cpus_found) = acpu->cpu_info.physid;
+ sn_cpu_info[cpus_found].p_speed =
+ acpu->cpu_speed;
cpus_found++;
}
acpu = (klcpu_t *)find_component(brd, (klinfo_t *)acpu,
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 9cbbf326fe01..61f3565f3645 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -150,25 +150,6 @@ void __init plat_time_init(void)
hub_rt_clock_event_init();
}

-void cpu_time_init(void)
-{
- lboard_t *board;
- klcpu_t *cpu;
- int cpuid;
-
- /* Don't use ARCS. ARCS is fragile. Klconfig is simple and sane. */
- board = find_lboard(KL_CONFIG_INFO(get_nasid()), KLTYPE_IP27);
- if (!board)
- panic("Can't find board info for myself.");
-
- cpuid = LOCAL_HUB_L(PI_CPU_NUM) ? IP27_CPU0_INDEX : IP27_CPU1_INDEX;
- cpu = (klcpu_t *) KLCF_COMP(board, cpuid);
- if (!cpu)
- panic("No information about myself?");
-
- printk("CPU %d clock is %dMHz.\n", smp_processor_id(), cpu->cpu_speed);
-}
-
void hub_rtc_init(nasid_t nasid)
{

--
2.24.1