Re: [PATCH v6 03/10] clocksource/drivers/arm_arch_timer: Improve printk relevant code

From: Hanjun Guo
Date: Wed Jun 29 2016 - 22:54:47 EST


On 2016/6/30 2:15, fu.wei@xxxxxxxxxx wrote:
From: Fu Wei <fu.wei@xxxxxxxxxx>

This patch defines pr_fmt(fmt) for all pr_* functions,
then the pr_* don't need to add "arch_timer:" everytime.

Also delete some Blank Spaces in arch_timer_banner,
according to the suggestion from checkpatch.pl.

No functional change.

Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
---
drivers/clocksource/arm_arch_timer.c | 52 +++++++++++++++++++-----------------
1 file changed, 27 insertions(+), 25 deletions(-)

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 966c574..9540e9d 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -29,6 +29,9 @@

#include <clocksource/arm_arch_timer.h>

+#undef pr_fmt
+#define pr_fmt(fmt) "arch_timer: " fmt
+
#define CNTTIDR 0x08
#define CNTTIDR_VIRT(n) (BIT(1) << ((n) * 4))

@@ -388,24 +391,24 @@ arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np)

/* Check the timer frequency. */
if (arch_timer_rate == 0)
- pr_warn("Architected timer frequency not available\n");
+ pr_warn("frequency not available\n");
}

static void arch_timer_banner(unsigned type)
{
- pr_info("Architected %s%s%s timer(s) running at %lu.%02luMHz (%s%s%s).\n",
- type & ARCH_CP15_TIMER ? "cp15" : "",
- type == (ARCH_CP15_TIMER | ARCH_MEM_TIMER) ? " and " : "",
- type & ARCH_MEM_TIMER ? "mmio" : "",
- (unsigned long)arch_timer_rate / 1000000,
- (unsigned long)(arch_timer_rate / 10000) % 100,
- type & ARCH_CP15_TIMER ?
- (arch_timer_uses_ppi == VIRT_PPI) ? "virt" : "phys" :
- "",
- type == (ARCH_CP15_TIMER | ARCH_MEM_TIMER) ? "/" : "",
- type & ARCH_MEM_TIMER ?
- arch_timer_mem_use_virtual ? "virt" : "phys" :
- "");
+ pr_info("%s%s%s timer(s) running at %lu.%02luMHz (%s%s%s).\n",
+ type & ARCH_CP15_TIMER ? "cp15" : "",
+ type == (ARCH_CP15_TIMER | ARCH_MEM_TIMER) ? " and " : "",
+ type & ARCH_MEM_TIMER ? "mmio" : "",
+ (unsigned long)arch_timer_rate / 1000000,
+ (unsigned long)(arch_timer_rate / 10000) % 100,
+ type & ARCH_CP15_TIMER ?
+ (arch_timer_uses_ppi == VIRT_PPI) ? "virt" : "phys" :
+ "",
+ type == (ARCH_CP15_TIMER | ARCH_MEM_TIMER) ? "/" : "",
+ type & ARCH_MEM_TIMER ?
+ arch_timer_mem_use_virtual ? "virt" : "phys" :
+ "");
}

u32 arch_timer_get_rate(void)
@@ -498,7 +501,7 @@ static void __init arch_counter_register(unsigned type)

static void arch_timer_stop(struct clock_event_device *clk)
{
- pr_debug("arch_timer_teardown disable IRQ%d cpu #%d\n",
+ pr_debug("teardown, disable IRQ%d cpu #%d\n",

Not a problem of this patch, but arch_timer_teardown is a function
name? I can't find where it's defined...

I think we can leave arch_timer as it but update it to:

pr_debug("arch_timer_stop disable IRQ%d cpu #%d\n",

Others are look good to me.

Thanks
Hanjun