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ARC: SMP: No need for CONFIG_ARC_IPI_DBG 

This was more relevant during SMP bringup.

The warning for bogus msg better be visible always.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2016-02-19 08:18:11 +05:30
parent 3dea30ca5b
commit d73b73f562
3 changed files with 1 additions and 19 deletions
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8
arch/arc/Kconfig
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@ -532,14 +532,6 @@ config ARC_DBG_TLB_MISS_COUNT
Counts number of I and D TLB Misses and exports them via Debugfs Counts number of I and D TLB Misses and exports them via Debugfs
The counters can be cleared via Debugfs as well The counters can be cleared via Debugfs as well
if SMP
config ARC_IPI_DBG
bool "Debug Inter Core interrupts"
default n
endif
endif endif
config ARC_UBOOT_SUPPORT config ARC_UBOOT_SUPPORT

9
arch/arc/kernel/mcip.c
View File

@ -65,7 +65,6 @@ static void mcip_ipi_clear(int irq)
{ {
unsigned int cpu, c; unsigned int cpu, c;
unsigned long flags; unsigned long flags;
unsigned int __maybe_unused copy;
if (unlikely(irq == SOFTIRQ_IRQ)) { if (unlikely(irq == SOFTIRQ_IRQ)) {
arc_softirq_clear(irq); arc_softirq_clear(irq);
@ -77,7 +76,7 @@ static void mcip_ipi_clear(int irq)
/* Who sent the IPI */ /* Who sent the IPI */
__mcip_cmd(CMD_INTRPT_CHECK_SOURCE, 0); __mcip_cmd(CMD_INTRPT_CHECK_SOURCE, 0);
copy = cpu = read_aux_reg(ARC_REG_MCIP_READBACK); /* 1,2,4,8... */ cpu = read_aux_reg(ARC_REG_MCIP_READBACK); /* 1,2,4,8... */
/* /*
* In rare case, multiple concurrent IPIs sent to same target can * In rare case, multiple concurrent IPIs sent to same target can
@ -91,12 +90,6 @@ static void mcip_ipi_clear(int irq)
} while (cpu); } while (cpu);
raw_spin_unlock_irqrestore(&mcip_lock, flags); raw_spin_unlock_irqrestore(&mcip_lock, flags);
#ifdef CONFIG_ARC_IPI_DBG
if (c != __ffs(copy))
pr_info("IPIs from %x coalesced to %x\n",
copy, raw_smp_processor_id());
#endif
} }
static void mcip_probe_n_setup(void) static void mcip_probe_n_setup(void)

3
arch/arc/kernel/smp.c
View File

@ -336,11 +336,8 @@ irqreturn_t do_IPI(int irq, void *dev_id)
int rc; int rc;
rc = __do_IPI(msg); rc = __do_IPI(msg);
#ifdef CONFIG_ARC_IPI_DBG
/* IPI received but no valid @msg */
if (rc) if (rc)
pr_info("IPI with bogus msg %ld in %ld\n", msg, copy); pr_info("IPI with bogus msg %ld in %ld\n", msg, copy);
#endif
pending &= ~(1U << msg); pending &= ~(1U << msg);
} while (pending); } while (pending);