x86: Replace seq_printf() with seq_puts()

seq_puts is a lot cheaper than seq_printf, so use that to print
literal strings.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: http://lkml.kernel.org/r/1417208622-12264-1-git-send-email-linux@rasmusvillemoes.dk
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 5433658..e7d8c76 100644 (file)
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -72,7 +72,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
        if (c->x86_mask || c->cpuid_level >= 0)
                seq_printf(m, "stepping\t: %d\n", c->x86_mask);
        else
-               seq_printf(m, "stepping\t: unknown\n");
+               seq_puts(m, "stepping\t: unknown\n");
        if (c->microcode)
                seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
 
@@ -92,12 +92,12 @@ static int show_cpuinfo(struct seq_file *m, void *v)
        show_cpuinfo_core(m, c, cpu);
        show_cpuinfo_misc(m, c);
 
-       seq_printf(m, "flags\t\t:");
+       seq_puts(m, "flags\t\t:");
        for (i = 0; i < 32*NCAPINTS; i++)
                if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
                        seq_printf(m, " %s", x86_cap_flags[i]);
 
-       seq_printf(m, "\nbugs\t\t:");
+       seq_puts(m, "\nbugs\t\t:");
        for (i = 0; i < 32*NBUGINTS; i++) {
                unsigned int bug_bit = 32*NCAPINTS + i;
 
@@ -118,7 +118,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
        seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
                   c->x86_phys_bits, c->x86_virt_bits);
 
-       seq_printf(m, "power management:");
+       seq_puts(m, "power management:");
        for (i = 0; i < 32; i++) {
                if (c->x86_power & (1 << i)) {
                        if (i < ARRAY_SIZE(x86_power_flags) &&
@@ -131,7 +131,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
                }
        }
 
-       seq_printf(m, "\n\n");
+       seq_puts(m, "\n\n");
 
        return 0;
 }

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 922d285..6307a0f 100644 (file)
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -59,78 +59,78 @@ int arch_show_interrupts(struct seq_file *p, int prec)
        seq_printf(p, "%*s: ", prec, "NMI");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->__nmi_count);
-       seq_printf(p, "  Non-maskable interrupts\n");
+       seq_puts(p, "  Non-maskable interrupts\n");
 #ifdef CONFIG_X86_LOCAL_APIC
        seq_printf(p, "%*s: ", prec, "LOC");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);
-       seq_printf(p, "  Local timer interrupts\n");
+       seq_puts(p, "  Local timer interrupts\n");
 
        seq_printf(p, "%*s: ", prec, "SPU");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count);
-       seq_printf(p, "  Spurious interrupts\n");
+       seq_puts(p, "  Spurious interrupts\n");
        seq_printf(p, "%*s: ", prec, "PMI");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->apic_perf_irqs);
-       seq_printf(p, "  Performance monitoring interrupts\n");
+       seq_puts(p, "  Performance monitoring interrupts\n");
        seq_printf(p, "%*s: ", prec, "IWI");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->apic_irq_work_irqs);
-       seq_printf(p, "  IRQ work interrupts\n");
+       seq_puts(p, "  IRQ work interrupts\n");
        seq_printf(p, "%*s: ", prec, "RTR");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->icr_read_retry_count);
-       seq_printf(p, "  APIC ICR read retries\n");
+       seq_puts(p, "  APIC ICR read retries\n");
 #endif
        if (x86_platform_ipi_callback) {
                seq_printf(p, "%*s: ", prec, "PLT");
                for_each_online_cpu(j)
                        seq_printf(p, "%10u ", irq_stats(j)->x86_platform_ipis);
-               seq_printf(p, "  Platform interrupts\n");
+               seq_puts(p, "  Platform interrupts\n");
        }
 #ifdef CONFIG_SMP
        seq_printf(p, "%*s: ", prec, "RES");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
-       seq_printf(p, "  Rescheduling interrupts\n");
+       seq_puts(p, "  Rescheduling interrupts\n");
        seq_printf(p, "%*s: ", prec, "CAL");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_call_count -
                                        irq_stats(j)->irq_tlb_count);
-       seq_printf(p, "  Function call interrupts\n");
+       seq_puts(p, "  Function call interrupts\n");
        seq_printf(p, "%*s: ", prec, "TLB");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
-       seq_printf(p, "  TLB shootdowns\n");
+       seq_puts(p, "  TLB shootdowns\n");
 #endif
 #ifdef CONFIG_X86_THERMAL_VECTOR
        seq_printf(p, "%*s: ", prec, "TRM");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count);
-       seq_printf(p, "  Thermal event interrupts\n");
+       seq_puts(p, "  Thermal event interrupts\n");
 #endif
 #ifdef CONFIG_X86_MCE_THRESHOLD
        seq_printf(p, "%*s: ", prec, "THR");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count);
-       seq_printf(p, "  Threshold APIC interrupts\n");
+       seq_puts(p, "  Threshold APIC interrupts\n");
 #endif
 #ifdef CONFIG_X86_MCE
        seq_printf(p, "%*s: ", prec, "MCE");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", per_cpu(mce_exception_count, j));
-       seq_printf(p, "  Machine check exceptions\n");
+       seq_puts(p, "  Machine check exceptions\n");
        seq_printf(p, "%*s: ", prec, "MCP");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", per_cpu(mce_poll_count, j));
-       seq_printf(p, "  Machine check polls\n");
+       seq_puts(p, "  Machine check polls\n");
 #endif
 #if IS_ENABLED(CONFIG_HYPERV) || defined(CONFIG_XEN)
        seq_printf(p, "%*s: ", prec, "THR");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count);
-       seq_printf(p, "  Hypervisor callback interrupts\n");
+       seq_puts(p, "  Hypervisor callback interrupts\n");
 #endif
        seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 6574388..c7eddbe 100644 (file)
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -824,7 +824,7 @@ static void *memtype_seq_start(struct seq_file *seq, loff_t *pos)
 {
        if (*pos == 0) {
                ++*pos;
-               seq_printf(seq, "PAT memtype list:\n");
+               seq_puts(seq, "PAT memtype list:\n");
        }
 
        return memtype_get_idx(*pos);

diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 3968d67..ab4062c 100644 (file)
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1367,20 +1367,18 @@ static int ptc_seq_show(struct seq_file *file, void *data)
 
        cpu = *(loff_t *)data;
        if (!cpu) {
-               seq_printf(file,
-                "# cpu bauoff sent stime self locals remotes ncpus localhub ");
-               seq_printf(file,
-                       "remotehub numuvhubs numuvhubs16 numuvhubs8 ");
-               seq_printf(file,
-                       "numuvhubs4 numuvhubs2 numuvhubs1 dto snacks retries ");
-               seq_printf(file,
-                       "rok resetp resett giveup sto bz throt disable ");
-               seq_printf(file,
-                       "enable wars warshw warwaits enters ipidis plugged ");
-               seq_printf(file,
-                       "ipiover glim cong swack recv rtime all one mult ");
-               seq_printf(file,
-                       "none retry canc nocan reset rcan\n");
+               seq_puts(file,
+                        "# cpu bauoff sent stime self locals remotes ncpus localhub ");
+               seq_puts(file, "remotehub numuvhubs numuvhubs16 numuvhubs8 ");
+               seq_puts(file,
+                        "numuvhubs4 numuvhubs2 numuvhubs1 dto snacks retries ");
+               seq_puts(file,
+                        "rok resetp resett giveup sto bz throt disable ");
+               seq_puts(file,
+                        "enable wars warshw warwaits enters ipidis plugged ");
+               seq_puts(file,
+                        "ipiover glim cong swack recv rtime all one mult ");
+               seq_puts(file, "none retry canc nocan reset rcan\n");
        }
        if (cpu < num_possible_cpus() && cpu_online(cpu)) {
                bcp = &per_cpu(bau_control, cpu);