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Date: Fri, 9 May 2008 22:40:52 -0700
From: Yinghai Lu <yhlu.kernel@...il.com>
To: Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout - fix #2
disable the noisy print out.
also use the one the less spare mtrr reg.
Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
@@ -730,6 +730,7 @@ struct var_mtrr_range_state {
};
struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
+static int __initdata debug_print;
static int __init
x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
@@ -748,10 +749,12 @@ x86_get_mtrr_mem_range(struct res_range
nr_range = add_range_with_merge(range, nr_range, base,
base + size - 1);
}
- printk(KERN_DEBUG "After WB checking\n");
- for (i = 0; i < nr_range; i++)
- printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
+ if (debug_print) {
+ printk(KERN_DEBUG "After WB checking\n");
+ for (i = 0; i < nr_range; i++)
+ printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
range[i].start, range[i].end + 1);
+ }
/* take out UC ranges */
for (i = 0; i < num_var_ranges; i++) {
@@ -775,17 +778,21 @@ x86_get_mtrr_mem_range(struct res_range
continue;
nr_range++;
}
- printk(KERN_DEBUG "After UC checking\n");
- for (i = 0; i < nr_range; i++)
- printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
- range[i].start, range[i].end + 1);
+ if (debug_print) {
+ printk(KERN_DEBUG "After UC checking\n");
+ for (i = 0; i < nr_range; i++)
+ printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
+ range[i].start, range[i].end + 1);
+ }
/* sort the ranges */
sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL);
- printk(KERN_DEBUG "After sorting\n");
- for (i = 0; i < nr_range; i++)
- printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
+ if (debug_print) {
+ printk(KERN_DEBUG "After sorting\n");
+ for (i = 0; i < nr_range; i++)
+ printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n",
range[i].start, range[i].end + 1);
+ }
/* clear those is not used */
for (i = nr_range; i < RANGE_NUM; i++)
@@ -912,12 +919,13 @@ range_to_mtrr(unsigned int reg, unsigned
align = max_align;
sizek = 1 << align;
- printk(KERN_DEBUG "Setting variable MTRR %d, base: %ldMB, "
- "range: %ldMB, type %s\n",
- reg, range_startk >> 10, sizek >> 10,
- (type == MTRR_TYPE_UNCACHABLE)?"UC":
- ((type == MTRR_TYPE_WRBACK)?"WB":"Other")
- );
+ if (debug_print)
+ printk(KERN_DEBUG "Setting variable MTRR %d, "
+ "base: %ldMB, range: %ldMB, type %s\n",
+ reg, range_startk >> 10, sizek >> 10,
+ (type == MTRR_TYPE_UNCACHABLE)?"UC":
+ ((type == MTRR_TYPE_WRBACK)?"WB":"Other")
+ );
save_var_mtrr(reg++, range_startk, sizek, type);
range_startk += sizek;
range_sizek -= sizek;
@@ -963,7 +971,9 @@ range_to_mtrr_with_hole(struct var_mtrr_
range0_basek = state->range_startk;
range0_sizek = ALIGN(state->range_sizek, chunk_sizek);
if (range0_sizek == state->range_sizek) {
- printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", range0_basek<<10,
+ if (debug_print)
+ printk(KERN_DEBUG "rangeX: %016lx - %016lx\n",
+ range0_basek<<10,
(range0_basek + state->range_sizek)<<10);
state->reg = range_to_mtrr(state->reg, range0_basek,
state->range_sizek, MTRR_TYPE_WRBACK);
@@ -980,7 +990,9 @@ range_to_mtrr_with_hole(struct var_mtrr_
}
if (range0_sizek) {
- printk(KERN_DEBUG "range0: %016lx - %016lx\n", range0_basek<<10,
+ if (debug_print)
+ printk(KERN_DEBUG "range0: %016lx - %016lx\n",
+ range0_basek<<10,
(range0_basek + range0_sizek)<<10);
state->reg = range_to_mtrr(state->reg, range0_basek,
range0_sizek, MTRR_TYPE_WRBACK);
@@ -1016,13 +1028,15 @@ range_to_mtrr_with_hole(struct var_mtrr_
second_sizek = 0;
}
- printk(KERN_DEBUG "range: %016lx - %016lx\n", range_basek<<10,
+ if (debug_print)
+ printk(KERN_DEBUG "range: %016lx - %016lx\n", range_basek<<10,
(range_basek + range_sizek)<<10);
state->reg = range_to_mtrr(state->reg, range_basek, range_sizek,
MTRR_TYPE_WRBACK);
if (hole_sizek) {
- printk(KERN_DEBUG "hole: %016lx - %016lx\n", hole_basek<<10,
- (hole_basek + hole_sizek)<<10);
+ if (debug_print)
+ printk(KERN_DEBUG "hole: %016lx - %016lx\n",
+ hole_basek<<10, (hole_basek + hole_sizek)<<10);
state->reg = range_to_mtrr(state->reg, hole_basek, hole_sizek,
MTRR_TYPE_UNCACHABLE);
@@ -1120,7 +1134,6 @@ x86_setup_var_mtrrs(struct res_range *ra
/* Write the last range */
if (var_state.range_sizek != 0)
range_to_mtrr_with_hole(&var_state, 0, 0);
- printk(KERN_DEBUG "DONE variable MTRRs\n");
num_reg = var_state.reg;
/* Clear out the extra MTRR's */
@@ -1219,6 +1232,7 @@ static int __init mtrr_cleanup(unsigned
if (mtrr_chunk_size && mtrr_gran_size) {
int num_reg;
+ debug_print = 1;
/* convert ranges to var ranges state */
num_reg = x86_setup_var_mtrrs(range, nr_range, mtrr_chunk_size,
mtrr_gran_size);
@@ -1242,8 +1256,8 @@ static int __init mtrr_cleanup(unsigned
result[i].lose_cover_sizek =
(range_sums - range_sums_new) << PSHIFT;
- printk(KERN_INFO " %sgran_size: %ldM \tchunk_size: %ldM \t",
- result[i].bad?" BAD ":"", result[i].gran_sizek >> 10,
+ printk(KERN_INFO "%sgran_size: %ldM \tchunk_size: %ldM \t",
+ result[i].bad?"*BAD*":" ", result[i].gran_sizek >> 10,
result[i].chunk_sizek >> 10);
printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ldM \n",
result[i].num_reg, result[i].bad?"-":"",
@@ -1254,6 +1268,7 @@ static int __init mtrr_cleanup(unsigned
}
printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, "
"will find optimal one\n");
+ debug_print = 0;
memset(result, 0, sizeof(result[0]));
}
@@ -1265,9 +1280,10 @@ static int __init mtrr_cleanup(unsigned
chunk_size <<= 1) {
int num_reg;
- printk(KERN_INFO
+ if (debug_print)
+ printk(KERN_INFO
"\ngran_size: %lldM chunk_size_size: %lldM\n",
- gran_size >> 20, chunk_size >> 20);
+ gran_size >> 20, chunk_size >> 20);
if (i >= NUM_RESULT)
continue;
@@ -1310,10 +1326,10 @@ static int __init mtrr_cleanup(unsigned
/* print out all */
for (i = 0; i < NUM_RESULT; i++) {
- printk(KERN_INFO "%sgran_size: %ldM \tchunk_size: %ldM \t",
+ printk(KERN_INFO "%sgran_size: %ldM \tchunk_size: %ldM \t",
result[i].bad?"*BAD* ":" ", result[i].gran_sizek >> 10,
result[i].chunk_sizek >> 10);
- printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ldM \n",
+ printk(KERN_CONT "num_reg: %d \tlose RAM: %s%ldM\n",
result[i].num_reg, result[i].bad?"-":"",
result[i].lose_cover_sizek >> 10);
}
@@ -1322,7 +1338,7 @@ static int __init mtrr_cleanup(unsigned
if (nr_mtrr_spare_reg >= num_var_ranges)
nr_mtrr_spare_reg = num_var_ranges - 1;
num_reg_good = -1;
- for (i = 1; i < num_var_ranges + 1 - nr_mtrr_spare_reg; i++) {
+ for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) {
if (!min_loss_pfn[i]) {
num_reg_good = i;
break;
@@ -1344,10 +1360,10 @@ static int __init mtrr_cleanup(unsigned
if (index_good != -1) {
printk(KERN_INFO "Found optimal setting for mtrr clean up\n");
i = index_good;
- printk(KERN_INFO "gran_size: %ldM \tchunk_size: %ldM \t",
+ printk(KERN_INFO "gran_size: %ldM \tchunk_size: %ldM \t",
result[i].gran_sizek >> 10,
result[i].chunk_sizek >> 10);
- printk(KERN_CONT "num_reg: %d \tlose cover RAM: %ldM \n",
+ printk(KERN_CONT "num_reg: %d \tlose RAM: %ldM\n",
result[i].num_reg,
result[i].lose_cover_sizek >> 10);
/* convert ranges to var ranges state */
@@ -1355,6 +1371,7 @@ static int __init mtrr_cleanup(unsigned
chunk_size <<= 10;
gran_size = result[i].gran_sizek;
gran_size <<= 10;
+ debug_print = 1;
x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size);
set_var_mtrr_all(address_bits);
return 1;
--
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