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Message-ID: <49BACB61.8000302@kernel.org>
Date: Fri, 13 Mar 2009 14:08:49 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: print fixed mtrr out continuous part together
Impact: less lines print out
1. print continuous range with same type together
2. change _INFO to _DEBUG
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
arch/x86/kernel/cpu/mtrr/generic.c | 58 ++++++++++++++++++++++++++++++-------
1 file changed, 48 insertions(+), 10 deletions(-)
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
@@ -208,13 +208,47 @@ void mtrr_save_fixed_ranges(void *info)
get_fixed_ranges(mtrr_state.fixed_ranges);
}
-static void print_fixed(unsigned base, unsigned step, const mtrr_type*types)
+static unsigned __initdata last_fixed_start;
+static unsigned __initdata last_fixed_end;
+static mtrr_type __initdata last_fixed_type;
+
+static void __init print_fixed_last(void)
+{
+ if (!last_fixed_end)
+ return;
+
+ printk(KERN_DEBUG " %05X-%05X %s\n", last_fixed_start,
+ last_fixed_end - 1, mtrr_attrib_to_str(last_fixed_type));
+
+ last_fixed_end = 0;
+}
+
+static void __init update_fixed_last(unsigned base, unsigned end,
+ mtrr_type type)
+{
+ last_fixed_start = base;
+ last_fixed_end = end;
+ last_fixed_type = type;
+}
+
+static void __init print_fixed(unsigned base, unsigned step,
+ const mtrr_type *types)
{
unsigned i;
- for (i = 0; i < 8; ++i, ++types, base += step)
- printk(KERN_INFO " %05X-%05X %s\n",
- base, base + step - 1, mtrr_attrib_to_str(*types));
+ for (i = 0; i < 8; ++i, ++types, base += step) {
+ if (last_fixed_end == 0) {
+ update_fixed_last(base, base + step, *types);
+ continue;
+ }
+ if (last_fixed_end == base && last_fixed_type == *types) {
+ last_fixed_end = base + step;
+ continue;
+ }
+ /* new segments: gap or different type */
+ print_fixed_last();
+ update_fixed_last(base, base + step, *types);
+ }
}
static void prepare_set(void);
@@ -225,22 +259,26 @@ static void __init print_mtrr_state(void
unsigned int i;
int high_width;
- printk(KERN_INFO "MTRR default type: %s\n", mtrr_attrib_to_str(mtrr_state.def_type));
+ printk(KERN_DEBUG "MTRR default type: %s\n",
+ mtrr_attrib_to_str(mtrr_state.def_type));
if (mtrr_state.have_fixed) {
- printk(KERN_INFO "MTRR fixed ranges %sabled:\n",
+ printk(KERN_DEBUG "MTRR fixed ranges %sabled:\n",
mtrr_state.enabled & 1 ? "en" : "dis");
print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0);
for (i = 0; i < 2; ++i)
print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8);
for (i = 0; i < 8; ++i)
print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8);
+
+ /* tail */
+ print_fixed_last();
}
- printk(KERN_INFO "MTRR variable ranges %sabled:\n",
+ printk(KERN_DEBUG "MTRR variable ranges %sabled:\n",
mtrr_state.enabled & 2 ? "en" : "dis");
high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 - PAGE_SHIFT) + 3) / 4;
for (i = 0; i < num_var_ranges; ++i) {
if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))
- printk(KERN_INFO " %u base %0*X%05X000 mask %0*X%05X000 %s\n",
+ printk(KERN_DEBUG " %u base %0*X%05X000 mask %0*X%05X000 %s\n",
i,
high_width,
mtrr_state.var_ranges[i].base_hi,
@@ -250,10 +288,10 @@ static void __init print_mtrr_state(void
mtrr_state.var_ranges[i].mask_lo >> 12,
mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff));
else
- printk(KERN_INFO " %u disabled\n", i);
+ printk(KERN_DEBUG " %u disabled\n", i);
}
if (mtrr_tom2) {
- printk(KERN_INFO "TOM2: %016llx aka %lldM\n",
+ printk(KERN_DEBUG "TOM2: %016llx aka %lldM\n",
mtrr_tom2, mtrr_tom2>>20);
}
}
--
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