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author | Feng Tang <feng.tang@intel.com> | 2010-12-08 15:18:57 +0800 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2010-12-09 21:52:06 +0100 |
commit | 0e3fa13f4ee110de007bca3bf395b77997319fc8 (patch) | |
tree | 801ee02881f6619822fae46e7ce52317d14d19d9 /arch/x86/kernel/mpparse.c | |
parent | 2d8009ba67f9503ceadf9d5a3b5637cee291ea8d (diff) | |
download | kernel_samsung_smdk4412-0e3fa13f4ee110de007bca3bf395b77997319fc8.zip kernel_samsung_smdk4412-0e3fa13f4ee110de007bca3bf395b77997319fc8.tar.gz kernel_samsung_smdk4412-0e3fa13f4ee110de007bca3bf395b77997319fc8.tar.bz2 |
x86: Further simplify mp_irq info handling
assign_to_mp_irq() is copying the struct mpc_intsrc members one by
one. That's silly. Use memcpy() and let the compiler figure it out.
Same for the identical function assign_to_mpc_intsrc()
mp_irq_mpc_intsrc_cmp() is comparing the struct members one by one,
but no caller ever checks the different return codes. Use memcmp()
instead.
Remove the extra printk in MP_ioapic_info()
Signed-off-by: Feng Tang <feng.tang@linux.intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: "Alan Cox <alan@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
LKML-Reference: <20101208151857.212f0018@feng-i7>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/mpparse.c')
-rw-r--r-- | arch/x86/kernel/mpparse.c | 38 |
1 files changed, 6 insertions, 32 deletions
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 4318687..01b0f6d 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -118,21 +118,8 @@ static void __init MP_bus_info(struct mpc_bus *m) static void __init MP_ioapic_info(struct mpc_ioapic *m) { - if (!(m->flags & MPC_APIC_USABLE)) - return; - - printk(KERN_INFO "I/O APIC #%d Version %d at 0x%X.\n", - m->apicid, m->apicver, m->apicaddr); - - mp_register_ioapic(m->apicid, m->apicaddr, gsi_top); -} - -static void print_MP_intsrc_info(struct mpc_intsrc *m) -{ - apic_printk(APIC_VERBOSE, "Int: type %d, pol %d, trig %d, bus %02x," - " IRQ %02x, APIC ID %x, APIC INT %02x\n", - m->irqtype, m->irqflag & 3, (m->irqflag >> 2) & 3, m->srcbus, - m->srcbusirq, m->dstapic, m->dstirq); + if (m->flags & MPC_APIC_USABLE) + mp_register_ioapic(m->apicid, m->apicaddr, gsi_top); } static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) @@ -144,23 +131,11 @@ static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) mp_irq->srcbusirq, mp_irq->dstapic, mp_irq->dstirq); } -static void __init assign_to_mpc_intsrc(struct mpc_intsrc *mp_irq, - struct mpc_intsrc *m) -{ - m->dstapic = mp_irq->dstapic; - m->type = mp_irq->type; - m->irqtype = mp_irq->irqtype; - m->irqflag = mp_irq->irqflag; - m->srcbus = mp_irq->srcbus; - m->srcbusirq = mp_irq->srcbusirq; - m->dstirq = mp_irq->dstirq; -} #else /* CONFIG_X86_IO_APIC */ static inline void __init MP_bus_info(struct mpc_bus *m) {} static inline void __init MP_ioapic_info(struct mpc_ioapic *m) {} #endif /* CONFIG_X86_IO_APIC */ - static void __init MP_lintsrc_info(struct mpc_lintsrc *m) { apic_printk(APIC_VERBOSE, "Lint: type %d, pol %d, trig %d, bus %02x," @@ -172,7 +147,6 @@ static void __init MP_lintsrc_info(struct mpc_lintsrc *m) /* * Read/parse the MPC */ - static int __init smp_check_mpc(struct mpc_table *mpc, char *oem, char *str) { @@ -718,11 +692,11 @@ static void __init check_irq_src(struct mpc_intsrc *m, int *nr_m_spare) int i; apic_printk(APIC_VERBOSE, "OLD "); - print_MP_intsrc_info(m); + print_mp_irq_info(m); i = get_MP_intsrc_index(m); if (i > 0) { - assign_to_mpc_intsrc(&mp_irqs[i], m); + memcpy(m, &mp_irqs[i], sizeof(*m)); apic_printk(APIC_VERBOSE, "NEW "); print_mp_irq_info(&mp_irqs[i]); return; @@ -809,14 +783,14 @@ static int __init replace_intsrc_all(struct mpc_table *mpc, if (nr_m_spare > 0) { apic_printk(APIC_VERBOSE, "*NEW* found\n"); nr_m_spare--; - assign_to_mpc_intsrc(&mp_irqs[i], m_spare[nr_m_spare]); + memcpy(m_spare[nr_m_spare], &mp_irqs[i], sizeof(mp_irqs[i])); m_spare[nr_m_spare] = NULL; } else { struct mpc_intsrc *m = (struct mpc_intsrc *)mpt; count += sizeof(struct mpc_intsrc); if (check_slot(mpc_new_phys, mpc_new_length, count) < 0) goto out; - assign_to_mpc_intsrc(&mp_irqs[i], m); + memcpy(m, &mp_irqs[i], sizeof(*m)); mpc->length = count; mpt += sizeof(struct mpc_intsrc); } |