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Message-ID: <20130430080541.GA21225@gmail.com>
Date: Tue, 30 Apr 2013 10:05:41 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/debug changes for v3.10
Linus,
Please pull the latest x86-debug-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-debug-for-linus
HEAD: 147ea09119e45caf2e8bf57c9e54cc930ccfeda9 x86, early-printk: Update earlyprintk documentation (and kill x86 copy)
Two small changes: a documentation update and a constification.
Thanks,
Ingo
------------------>
Dave Hansen (1):
x86, early-printk: Update earlyprintk documentation (and kill x86 copy)
Jan Beulich (1):
x86: Constify a few items
Documentation/kernel-parameters.txt | 16 ++++++++++++++--
Documentation/x86/x86_64/boot-options.txt | 14 --------------
arch/x86/kernel/amd_nb.c | 2 +-
arch/x86/kernel/cpu/perf_event_knc.c | 4 ++--
arch/x86/kernel/cpu/perf_event_p6.c | 2 +-
5 files changed, 18 insertions(+), 20 deletions(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4609e81..b5cfd04 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -757,19 +757,31 @@ 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.
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index e015a83..e9e8ddb 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -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
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index aadf335..3684129 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -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) },
{}
};
diff --git a/arch/x86/kernel/cpu/perf_event_knc.c b/arch/x86/kernel/cpu/perf_event_knc.c
index 4b7731b..838fa87 100644
--- a/arch/x86/kernel/cpu/perf_event_knc.c
+++ b/arch/x86/kernel/cpu/perf_event_knc.c
@@ -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,
diff --git a/arch/x86/kernel/cpu/perf_event_p6.c b/arch/x86/kernel/cpu/perf_event_p6.c
index 4820c23..b1e2fe1 100644
--- a/arch/x86/kernel/cpu/perf_event_p6.c
+++ b/arch/x86/kernel/cpu/perf_event_p6.c
@@ -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] =
--
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