Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1661157

[PATCH] irqchip/mips-gic: mark count and compare accessors notrace

Show all headers | View raw

gic_read_count(), gic_write_compare() and gic_write_cpu_compare() are
often used in a sequence to update the compare register with a count
value increased by a small offset.
With small delta values used to update the compare register, the time to
update function trace for these operations may be longer than the update
timeout leading to update failure.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
---
 drivers/irqchip/irq-mips-gic.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index eb7fbe1..ecee073 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -140,7 +140,7 @@ static inline void gic_map_to_vpe(unsigned int intr, unsigned int vpe)
 }
 
 #ifdef CONFIG_CLKSRC_MIPS_GIC
-u64 gic_read_count(void)
+notrace u64 gic_read_count(void)
 {
 	unsigned int hi, hi2, lo;
 
@@ -167,7 +167,7 @@ unsigned int gic_get_count_width(void)
 	return bits;
 }
 
-void gic_write_compare(u64 cnt)
+notrace void gic_write_compare(u64 cnt)
 {
 	if (mips_cm_is64) {
 		gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE), cnt);
@@ -179,7 +179,7 @@ void gic_write_compare(u64 cnt)
 	}
 }
 
-void gic_write_cpu_compare(u64 cnt, int cpu)
+notrace void gic_write_cpu_compare(u64 cnt, int cpu)
 {
 	unsigned long flags;
 
-- 
2.7.4

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] irqchip/mips-gic: mark count and compare accessors notrace Marcin Nowakowski <marcin.nowakowski@imgtec.com> - 2017-06-08 15:10 +0200
  Re: [PATCH] irqchip/mips-gic: mark count and compare accessors notrace Marc Zyngier <marc.zyngier@arm.com> - 2017-06-08 15:30 +0200
    Re: [PATCH] irqchip/mips-gic: mark count and compare accessors  notrace Marcin Nowakowski <marcin.nowakowski@imgtec.com> - 2017-06-08 15:40 +0200

csiph-web