diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 | ||||
| -rw-r--r-- | init/calibrate.c | 11 | ||||
| -rw-r--r-- | init/main.c | 2 |
3 files changed, 21 insertions, 5 deletions
diff --git a/init/Kconfig b/init/Kconfig index 412c21b00d51..d62778390e55 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -673,7 +673,7 @@ config CGROUP_MEM_RES_CTLR_SWAP be careful about enabling this. When memory resource controller is disabled by boot option, this will be automatically disabled and there will be no overhead from this. Even when you set this config=y, - if boot option "noswapaccount" is set, swap will not be accounted. + if boot option "swapaccount=0" is set, swap will not be accounted. Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page size is 4096bytes, 512k per 1Gbytes of swap. config CGROUP_MEM_RES_CTLR_SWAP_ENABLED @@ -688,7 +688,7 @@ config CGROUP_MEM_RES_CTLR_SWAP_ENABLED parameter should have this option unselected. For those who want to have the feature enabled by default should select this option (if, for some reason, they need to disable it - then noswapaccount does the trick). + then swapaccount=0 does the trick). config CGROUP_PERF bool "Enable perf_event per-cpu per-container group (cgroup) monitoring" @@ -917,6 +917,8 @@ config ANON_INODES menuconfig EXPERT bool "Configure standard kernel features (expert users)" + # Unhide debug options, to make the on-by-default options visible + select DEBUG_KERNEL help This option allows certain base kernel options and settings to be disabled or tweaked. This is for specialized @@ -1007,14 +1009,19 @@ config ELF_CORE help Enable support for generating core dumps. Disabling saves about 4k. + config PCSPKR_PLATFORM bool "Enable PC-Speaker support" if EXPERT - depends on ALPHA || X86 || MIPS || PPC_PREP || PPC_CHRP || PPC_PSERIES + depends on HAVE_PCSPKR_PLATFORM + select I8253_LOCK default y help This option allows to disable the internal PC-Speaker support, saving some memory. +config HAVE_PCSPKR_PLATFORM + bool + config BASE_FULL default y bool "Enable full-sized data structures for core" if EXPERT diff --git a/init/calibrate.c b/init/calibrate.c index aae2f40fea4c..24df7976816c 100644 --- a/init/calibrate.c +++ b/init/calibrate.c @@ -9,6 +9,7 @@ #include <linux/init.h> #include <linux/timex.h> #include <linux/smp.h> +#include <linux/percpu.h> unsigned long lpj_fine; unsigned long preset_lpj; @@ -243,12 +244,19 @@ recalibrate: return lpj; } +static DEFINE_PER_CPU(unsigned long, cpu_loops_per_jiffy) = { 0 }; + void __cpuinit calibrate_delay(void) { unsigned long lpj; static bool printed; + int this_cpu = smp_processor_id(); - if (preset_lpj) { + if (per_cpu(cpu_loops_per_jiffy, this_cpu)) { + lpj = per_cpu(cpu_loops_per_jiffy, this_cpu); + pr_info("Calibrating delay loop (skipped) " + "already calibrated this CPU"); + } else if (preset_lpj) { lpj = preset_lpj; if (!printed) pr_info("Calibrating delay loop (skipped) " @@ -266,6 +274,7 @@ void __cpuinit calibrate_delay(void) pr_info("Calibrating delay loop... "); lpj = calibrate_delay_converge(); } + per_cpu(cpu_loops_per_jiffy, this_cpu) = lpj; if (!printed) pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n", lpj/(500000/HZ), diff --git a/init/main.c b/init/main.c index d7211faed2ad..1952d37e4ecb 100644 --- a/init/main.c +++ b/init/main.c @@ -715,7 +715,7 @@ static void __init do_basic_setup(void) { cpuset_init_smp(); usermodehelper_init(); - init_tmpfs(); + shmem_init(); driver_init(); init_irq_proc(); do_ctors(); |