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Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 debug update from Ingo Molnar:
 "Two small changes: a documentation update and a constification"

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, early-printk: Update earlyprintk documentation (and kill x86 copy)
  x86: Constify a few items
This commit is contained in:
Linus Torvalds 2013-04-30 08:35:20 -07:00
commit 39b2f8656e
5 changed files with 18 additions and 20 deletions
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16
Documentation/kernel-parameters.txt
View File

@ -789,19 +789,31 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
(mmio) or 32-bit (mmio32).
The options are the same as for ttyS, above.
earlyprintk= [X86,SH,BLACKFIN]
earlyprintk= [X86,SH,BLACKFIN,ARM]
earlyprintk=vga
earlyprintk=xen
earlyprintk=serial[,ttySn[,baudrate]]
earlyprintk=serial[,0x...[,baudrate]]
earlyprintk=ttySn[,baudrate]
earlyprintk=dbgp[debugController#]
earlyprintk is useful when the kernel crashes before
the normal console is initialized. It is not enabled by
default because it has some cosmetic problems.
Append ",keep" to not disable it when the real console
takes over.
Only vga or serial or usb debug port at a time.
Currently only ttyS0 and ttyS1 are supported.
Currently only ttyS0 and ttyS1 may be specified by
name. Other I/O ports may be explicitly specified
on some architectures (x86 and arm at least) by
replacing ttySn with an I/O port address, like this:
earlyprintk=serial,0x1008,115200
You can find the port for a given device in
/proc/tty/driver/serial:
2: uart:ST16650V2 port:00001008 irq:18 ...
Interaction with the standard serial driver is not
very good.

14
Documentation/x86/x86_64/boot-options.txt
View File

@ -91,20 +91,6 @@ APICs
apicmaintimer. Useful when your PIT timer is totally
broken.
Early Console
syntax: earlyprintk=vga
earlyprintk=serial[,ttySn[,baudrate]]
The early console is useful when the kernel crashes before the
normal console is initialized. It is not enabled by
default because it has some cosmetic problems.
Append ,keep to not disable it when the real console takes over.
Only vga or serial at a time, not both.
Currently only ttyS0 and ttyS1 are supported.
Interaction with the standard serial driver is not very good.
The VGA output is eventually overwritten by the real console.
Timing
notsc

2
arch/x86/kernel/amd_nb.c
View File

@ -24,7 +24,7 @@ const struct pci_device_id amd_nb_misc_ids[] = {
};
EXPORT_SYMBOL(amd_nb_misc_ids);
static struct pci_device_id amd_nb_link_ids[] = {
static const struct pci_device_id amd_nb_link_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) },
{}
};

4
arch/x86/kernel/cpu/perf_event_knc.c
View File

@ -17,7 +17,7 @@ static const u64 knc_perfmon_event_map[] =
[PERF_COUNT_HW_BRANCH_MISSES] = 0x002b,
};
static __initconst u64 knc_hw_cache_event_ids
static const u64 __initconst knc_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@ -284,7 +284,7 @@ static struct attribute *intel_knc_formats_attr[] = {
NULL,
};
static __initconst struct x86_pmu knc_pmu = {
static const struct x86_pmu knc_pmu __initconst = {
.name = "knc",
.handle_irq = knc_pmu_handle_irq,
.disable_all = knc_pmu_disable_all,

2
arch/x86/kernel/cpu/perf_event_p6.c
View File

@ -19,7 +19,7 @@ static const u64 p6_perfmon_event_map[] =
};
static u64 p6_hw_cache_event_ids
static const u64 __initconst p6_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =