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Subject[PATCH 1/3] x86: add mtrr_cleanup_debug command line
Date
 add mtrr_cleanup_debug to print out more info about layout

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

---
arch/x86/kernel/cpu/mtrr/main.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

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
@@ -836,6 +836,13 @@ static int __init enable_mtrr_cleanup_se
}
early_param("enble_mtrr_cleanup", enable_mtrr_cleanup_setup);

+static int __init mtrr_cleanup_debug_setup(char *str)
+{
+ debug_print = 1;
+ return 0;
+}
+early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup);
+
struct var_mtrr_state {
unsigned long range_startk;
unsigned long range_sizek;
@@ -1231,7 +1238,7 @@ static int __init mtrr_cleanup(unsigned
if (mtrr_chunk_size && mtrr_gran_size) {
int num_reg;

- debug_print = 1;
+ debug_print++;
/* convert ranges to var ranges state */
num_reg = x86_setup_var_mtrrs(range, nr_range, mtrr_chunk_size,
mtrr_gran_size);
@@ -1267,7 +1274,7 @@ 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;
+ debug_print--;
memset(result, 0, sizeof(result[0]));
}

@@ -1370,8 +1377,9 @@ static int __init mtrr_cleanup(unsigned
chunk_size <<= 10;
gran_size = result[i].gran_sizek;
gran_size <<= 10;
- debug_print = 1;
+ debug_print++;
x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size);
+ debug_print--;
set_var_mtrr_all(address_bits);
return 1;
}

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