- 28 6月, 2016 1 次提交
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由 Daniel Lezcano 提交于
Currently, the clksrc-probe is not able to handle any error from the init functions. There are different issues with the current code: - the code is duplicated in the init functions by writing error - every driver tends to panic in its own init function - counting the number of clocksources is not reliable This patch adds another table to store the functions returning an error. The table is temporary while we convert all the drivers to return an error and will disappear. Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
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- 23 4月, 2016 1 次提交
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由 David Lechner 提交于
This header uses OF_DELCARE_1 which is defined in linux/of.h. This fixes getting unhelpful compiler error messages about missing ')' before a string constant. Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: NDavid Lechner <david@lechnology.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 27 2月, 2016 1 次提交
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由 Alexander Kuleshov 提交于
The clocksource_khz2mult() and clocksource_hz2mult() share similar code wihch calculates a mult from the given frequency. Both implementations in differ only in value of a frequency. This patch introduces the clocksource_freq2mult() helper with generic implementation of mult calculation to prevent code duplication. Signed-off-by: NAlexander Kuleshov <kuleshovmail@gmail.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Link: http://lkml.kernel.org/r/1456542854-22104-2-git-send-email-john.stultz@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 26 11月, 2015 1 次提交
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由 Thomas Gleixner 提交于
We cache all hotpath members of a clocksource in the time keeper core. So there is no requirement in general to cache line align struct clocksource. Remove the enforces alignment. That allows users which need to wrap struct clocksource into their own struct to align the struct without getting extra padding. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mans Rullgard <mans@mansr.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Nicolas Pitre <nico@linaro.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Sebastian Frias <sebastian_frias@sigmadesigns.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1511191209000.3898@nanos
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- 01 10月, 2015 4 次提交
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由 Marc Zyngier 提交于
Seeing the 'of' characters in a symbol that is being called from ACPI seems to freak out people. So let's do a bit of pointless renaming so that these folks do feel at home. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Reviewed-by: NHanjun Guo <hanjun.guo@linaro.org> Acked-by: NThomas Gleixner <tglx@linutronix.de> Tested-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Marc Zyngier 提交于
It is now absolutely trivial to convert the arch timer driver to use ACPI probing, just like its DT counterpart. Let's enjoy another crapectomy. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NThomas Gleixner <tglx@linutronix.de> Tested-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Marc Zyngier 提交于
The clocksource probing infrastructure currently depends on CONFIG_CLKSRC_OF, which depends on CONFIG_OF. In order to make this infrastructure selectable even if CONFIG_OF is not selected, introduce a new CONFIG_CLKSRC_PROBE (which allow the infrastructure to be compiled in), and CONFIG_CLKSRC_ACPI (which is the pendent of CONFIG_CLKSRC_OF for ACPI). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NThomas Gleixner <tglx@linutronix.de> Tested-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Marc Zyngier 提交于
DT enjoys a rather nice probing infrastructure for clocksources, while ACPI is so far stuck into a very distant past. This patch introduces a declarative API, allowing clocksources to be self-contained and be called when parsing the GTDT table. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NThomas Gleixner <tglx@linutronix.de> Tested-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 22 4月, 2015 1 次提交
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由 Yingjoe Chen 提交于
The function clocksource_get_next() was removed in commit 75c5158f (timekeeping: Update clocksource with stop_machine), but the prototype was not removed with it. Remove the prototype. Signed-off-by: NYingjoe Chen <yingjoe.chen@mediatek.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <srv_heupstream@mediatek.com> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/1428674150-1780-1-git-send-email-yingjoe.chen@mediatek.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 26 3月, 2015 1 次提交
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由 Hanjun Guo 提交于
Using the information presented by GTDT (Generic Timer Description Table) to initialize the arch timer (not memory-mapped). CC: Daniel Lezcano <daniel.lezcano@linaro.org> CC: Thomas Gleixner <tglx@linutronix.de> Originally-by: NAmit Daniel Kachhap <amit.daniel@samsung.com> Tested-by: NSuravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Tested-by: NYijing Wang <wangyijing@huawei.com> Tested-by: NMark Langsdorf <mlangsdo@redhat.com> Tested-by: NJon Masters <jcm@redhat.com> Tested-by: NTimur Tabi <timur@codeaurora.org> Tested-by: NRobert Richter <rrichter@cavium.com> Acked-by: NRobert Richter <rrichter@cavium.com> Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NHanjun Guo <hanjun.guo@linaro.org> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 13 3月, 2015 2 次提交
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由 John Stultz 提交于
Ingo requested this function be renamed to improve readability, so I've renamed __clocksource_updatefreq_scale() as well as the __clocksource_updatefreq_hz/khz() functions to avoid squishedtogethernames. This touches some of the sh clocksources, which I've not tested. The arch/arm/plat-omap change is just a comment change for consistency. Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1426133800-29329-13-git-send-email-john.stultz@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 John Stultz 提交于
A long running project has been to clean up remaining uses of clocksource_register(), replacing it with the simpler clocksource_register_khz/hz() functions. However, there are a few cases where we need to self-define our mult/shift values, so switch the function to a more obviously internal __clocksource_register() name, and consolidate much of the internal logic so we don't have duplication. Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1426133800-29329-10-git-send-email-john.stultz@linaro.org [ Minor cleanups. ] Signed-off-by: NIngo Molnar <mingo@kernel.org>
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- 12 3月, 2015 1 次提交
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由 John Stultz 提交于
In order to facilitate clocksource validation, add a 'max_cycles' field to the clocksource structure which will hold the maximum cycle value that can safely be multiplied without potentially causing an overflow. Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1426133800-29329-4-git-send-email-john.stultz@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 31 12月, 2014 1 次提交
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由 Richard Cochran 提交于
The timecounter code has almost nothing to do with the clocksource code. Let it live in its own file. This will help isolate the timecounter users from the clocksource users in the source tree. Signed-off-by: NRichard Cochran <richardcochran@gmail.com> Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 10月, 2014 1 次提交
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由 Bjorn Helgaas 提交于
kernel/time/jiffies.c provides a default clocksource_default_clock() definition explicitly marked "weak". arch/s390 provides its own definition intended to override the default, but the "weak" attribute on the declaration applied to the s390 definition as well, so the linker chose one based on link order (see 10629d71 ("PCI: Remove __weak annotation from pcibios_get_phb_of_node decl")). Remove the "weak" attribute from the clocksource_default_clock() declaration so we always prefer a non-weak definition over the weak one, independent of link order. Fixes: f1b82746 ("clocksource: Cleanup clocksource selection") Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Acked-by: NJohn Stultz <john.stultz@linaro.org> Acked-by: NIngo Molnar <mingo@kernel.org> CC: Daniel Lezcano <daniel.lezcano@linaro.org> CC: Martin Schwidefsky <schwidefsky@de.ibm.com>
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- 24 7月, 2014 1 次提交
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由 Thomas Gleixner 提交于
cycle_last was added to the clocksource to support the TSC validation. We moved that to the core code, so we can get rid of the extra copy. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 21 5月, 2014 1 次提交
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由 Rob Herring 提交于
We now have several OF match tables using linker sections that are nearly the same definition. The only variation is the callback function prototype. Create a common define for creating linker section OF match table entries which each table declaration can use. Acked-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NRob Herring <robh@kernel.org>
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- 31 7月, 2013 1 次提交
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由 Stephen Boyd 提交于
We need to calculate the same number in the clocksource code and the sched_clock code, so extract this code into its own function. We also drop the min_t and just use min() because the two types are the same. Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 05 7月, 2013 1 次提交
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由 Thomas Gleixner 提交于
Up to commit 5d33b883 (clocksource: Always verify highres capability) we had no sanity check when selecting a clocksource, which prevented that a non highres capable clocksource is used when the system already switched to highres/nohz mode. The new sanity check works as Alex and Tim found out. It prevents the TSC from being used. This happens because on x86 the boot process looks like this: tsc_start_freqency_validation(TSC); clocksource_register(HPET); clocksource_done_booting(); clocksource_select() Selects HPET which is valid for high-res switch_to_highres(); clocksource_register(TSC); TSC is not selected, because it is not yet flagged as VALID_HIGH_RES clocksource_watchdog() Validates TSC for highres, but that does not make TSC the current clocksource. Before the sanity check was added, we installed TSC unvalidated which worked most of the time. If the TSC was really detected as unstable, then the unstable logic removed it and installed HPET again. The sanity check is correct and needed. So the watchdog needs to kick a reselection of the clocksource, when it qualifies TSC as a valid high res clocksource. To solve this, we mark the clocksource which got the flag CLOCK_SOURCE_VALID_FOR_HRES set by the watchdog with an new flag CLOCK_SOURCE_RESELECT and trigger the watchdog thread. The watchdog thread evaluates the flag and invokes clocksource_select() when set. To avoid that the clocksource_done_booting() code, which is about to install the first real clocksource anyway, needs to go through clocksource_select and tick_oneshot_notify() pointlessly, split out the clocksource_watchdog_kthread() list walk code and invoke the select/notify only when called from clocksource_watchdog_kthread(). So clocksource_done_booting() can utilize the same splitout code without the select/notify invocation and the clocksource_mutex unlock/relock dance. Reported-and-tested-by: NAlex Shi <alex.shi@intel.com> Cc: Hans Peter Anvin <hpa@linux.intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Andi Kleen <andi.kleen@intel.com> Tested-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@kernel.org> Cc: Davidlohr Bueso <davidlohr.bueso@hp.com> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1307042239150.11637@ionos.tec.linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 16 5月, 2013 3 次提交
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由 Thomas Gleixner 提交于
The unregister call can fail, if the clocksource is the current one and there is no replacement clocksource available. It can also fail, if the clocksource is the watchdog clocksource and I'm not going to provide support for this. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130425143436.029915527@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Add a module refcount, so the current clocksource cannot be removed unconditionally. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130425143435.762417789@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
timekeeping_notify() can fail due cs->enable() failure. Though the caller does not notice and happily keeps the wrong clocksource as the current one. Let the caller know about failure, so the current clocksource will be shown correctly in sysfs. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NJohn Stultz <john.stultz@linaro.org> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130425143435.696321912@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 28 3月, 2013 1 次提交
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由 Arnd Bergmann 提交于
This ensures that a function pointer passed into CLOCKSOURCE_OF_DECLARE takes the same arguments that we use for calling that function later. Also fix the extraneous semicolon at end of the CLOCKSOURCE_OF_DECLARE definition. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NRob Herring <rob.herring@calxeda.com>
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- 20 3月, 2013 1 次提交
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由 Arnd Bergmann 提交于
This ensures that a function pointer passed into CLOCKSOURCE_OF_DECLARE takes the same arguments that we use for calling that function later. Also fix the extraneous semicolon at end of the CLOCKSOURCE_OF_DECLARE definition. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NRob Herring <rob.herring@calxeda.com>
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- 16 3月, 2013 1 次提交
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由 Feng Tang 提交于
Some x86 processors have a TSC clocksource, which continues to run even when system is suspended. Also most OMAP platforms have a 32 KHz timer which has similar capability. Add a feature flag so that it could be utilized. Signed-off-by: NFeng Tang <feng.tang@intel.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 11 3月, 2013 1 次提交
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由 Rob Herring 提交于
Add an empty clocksource_of_init when !CLKSRC_OF. This is needed for builds where no timer has selected CLKSRC_OF. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de>
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- 01 2月, 2013 1 次提交
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由 Stephen Warren 提交于
This allows clocksource drivers that support both DT and non-DT to always invoke macro CLOCKSOURCE_OF_DECLARE(), rather than wrapping it in a #ifdef CONFIG_CLKSRC_OF, which simplifies their code. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 03 1月, 2013 1 次提交
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由 Stephen Warren 提交于
It is desirable to move all clocksource drivers to drivers/clocksource, yet each requires its own initialization function. We'd rather not pollute <linux/> with a header for each function. Instead, create a single of_clksrc_init() function which will determine which clocksource driver to initialize based on device tree. Based on a similar patch for drivers/irqchip by Thomas Petazzoni. Signed-off-by: NStephen Warren <swarren@nvidia.com>
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- 25 9月, 2012 1 次提交
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由 John Stultz 提交于
Since users will need to include timekeeper_internal.h, move update_vsyscall definitions to timekeeper_internal.h. Cc: Tony Luck <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 02 2月, 2012 1 次提交
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由 Yong Zhang 提交于
No one is using this, so encourage the use of clocksource_register_hz/khz(), and drop this helper. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NYong Zhang <yong.zhang0@gmail.com> [jstultz: tweaked commit message] Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 19 12月, 2011 1 次提交
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由 Kusanagi Kouichi 提交于
Fix various KernelDoc build warnings. Signed-off-by: NKusanagi Kouichi <slash@ac.auone-net.jp> Cc: John Stultz <johnstul@us.ibm.com> Link: http://lkml.kernel.org/r/20111219091320.0D5AF6FC03D@msa105.auone-net.jpSigned-off-by: NIngo Molnar <mingo@elte.hu>
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- 11 11月, 2011 1 次提交
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由 John Stultz 提交于
For some frequencies, the clocks_calc_mult_shift() function will unfortunately select mult values very close to 0xffffffff. This has the potential to overflow when NTP adjusts the clock, adding to the mult value. This patch adds a clocksource.maxadj value, which provides an approximation of an 11% adjustment(NTP limits adjustments to 500ppm and the tick adjustment is limited to 10%), which could be made to the clocksource.mult value. This is then used to both check that the current mult value won't overflow/underflow, as well as warning us if the timekeeping_adjust() code pushes over that 11% boundary. v2: Fix max_adjustment calculation, and improve WARN_ONCE messages. v3: Don't warn before maxadj has actually been set CC: Yong Zhang <yong.zhang0@gmail.com> CC: David Daney <ddaney.cavm@gmail.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Chen Jie <chenj@lemote.com> CC: zhangfx <zhangfx@lemote.com> CC: stable@kernel.org Reported-by: NChen Jie <chenj@lemote.com> Reported-by: Nzhangfx <zhangfx@lemote.com> Tested-by: NYong Zhang <yong.zhang0@gmail.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 22 7月, 2011 1 次提交
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由 H. Peter Anvin 提交于
The machinery for __ARCH_HAS_CLOCKSOURCE_DATA assumed a file in asm-generic would be the default for architectures without their own file in asm/, but that is not how it works. Replace it with a Kconfig option instead. Link: http://lkml.kernel.org/r/4E288AA6.7090804@zytor.comSigned-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@mit.edu> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tony Luck <tony.luck@intel.com>
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- 15 7月, 2011 1 次提交
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由 Andy Lutomirski 提交于
Now that clocksource.archdata is available, use it for ia64-specific code. Cc: Clemens Ladisch <clemens@ladisch.de> Cc: linux-ia64@vger.kernel.org Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/d31de0ee0842a0e322fb6441571c2b0adb323fa2.1310563276.git.luto@mit.eduSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 14 7月, 2011 1 次提交
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由 Andy Lutomirski 提交于
The vread field was bloating struct clocksource everywhere except x86_64, and I want to change the way this works on x86_64, so let's split it out into per-arch data. Cc: x86@kernel.org Cc: Clemens Ladisch <clemens@ladisch.de> Cc: linux-ia64@vger.kernel.org Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/3ae5ec76a168eaaae63f08a2a1060b91aa0b7759.1310563276.git.luto@mit.eduSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 17 6月, 2011 1 次提交
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由 Thomas Gleixner 提交于
The clocksource watchdog code is interruptible and it has been observed that this can trigger false positives which disable the TSC. The reason is that an interrupt storm or a long running interrupt handler between the read of the watchdog source and the read of the TSC brings the two far enough apart that the delta is larger than the unstable treshold. Move both reads into a short interrupt disabled region to avoid that. Reported-and-tested-by: NVernon Mauery <vernux@us.ibm.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: stable@kernel.org
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- 24 5月, 2011 1 次提交
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由 Russell King 提交于
Add a generic mmio clocksource, covering both 32-bit and 16-bit register access sizes, for up or down counters. This can be used to easily create clocksources for simple counter-based implementations. Cc: Alessandro Rubini <rubini@unipv.it> Cc: Colin Cross <ccross@android.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Erik Gilling <konkers@android.com> Acked-by: N"Hans J. Koch" <hjk@hansjkoch.de> Cc: Imre Kaloz <kaloz@openwrt.org> Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: linux-omap@vger.kernel.org Acked-by: NNicolas Pitre <nico@fluxnic.net> Cc: Olof Johansson <olof@lixom.net> Tested-by: NSascha Hauer <s.hauer@pengutronix.de> Reviewed-by: NThomas Gleixner <tglx@linutronix.de> Tested-by: NTony Lindgren <tony@atomide.com> Reviewed-by: NViresh Kumar <viresh.kumar@st.com> Cc: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 19 5月, 2011 1 次提交
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由 Thomas Gleixner 提交于
Group the hot path members of struct clocksource together so we have a better cache line footprint. Make it cacheline aligned. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> Reviewed-by: NIngo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/%3C20110518210136.003081882%40linutronix.de%3E
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- 14 5月, 2011 1 次提交
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由 Russell King 提交于
Convert the footbridge isa-timer code to use generic i8253 clocksource. Acked-by: NJohn Stultz <john.stultz@linaro.org> Acked-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 22 2月, 2011 1 次提交
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由 Russell King - ARM Linux 提交于
As nothing should be writing to the clocksource name string, make the clocksource name pointer const. Build-tested on ARM Versatile Express. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NJohn Stultz <johnstul@us.ibm.com>
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