From 3f03c54a34fa3da680b3341dd3ba965ef3394bd1 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 9 May 2008 22:40:52 -0700 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 Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/mtrr/main.c | 79 ++++++++++++++++++++------------- 1 file changed, 48 insertions(+), 31 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c index e6c162c379a..0642201784e 100644 --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/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 *range, int nr_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 *range, int nr_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 long range_startk, 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_state *state, unsigned long basek, 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_state *state, unsigned long basek, } 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_state *state, unsigned long basek, 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 *range, int nr_range, /* 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 address_bits) 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 address_bits) 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 address_bits) } 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 address_bits) 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 address_bits) /* 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 address_bits) 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 address_bits) 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 address_bits) 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; -- 2.43.2