- 26 6月, 2017 1 次提交
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由 Pavel Tatashin 提交于
There is a typo in a comment that propagated into code: upa-portis instead of upa-portid This problem was detected by code inspection. Fixes: eea98334 ("sparc64: broken %tick frequency on spitfire cpus" Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reported-by: NSteven Sistare <steven.sistare@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 6月, 2017 2 次提交
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由 Pavel Tatashin 提交于
After early boot time stamps project the %tick frequency is detected incorrectly on spittfire cpus. We must use cpuid of boot cpu to find corresponding cpu node in OpenBoot, and extract clock-frequency property from there. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
We initialize time early, we must use prom interface instead of open firmware driver, which is not yet initialized. Also, use prom_getintdefault() instead of prom_getint() to be compatible with the code before early boot timestamps project. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 13 6月, 2017 7 次提交
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由 Pavel Tatashin 提交于
Replace read tick function pointers with the new hot-patched get_tick(). This optimizes the performance of functions such as: sched_clock() Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
Add the new get_tick() function that is hot-patched during boot based on processor we are booting on. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
In Linux it is possible to configure printk() to output timestamp next to every line. This is very useful to determine the slow parts of the boot process, and also to avoid regressions, as boot time is visiable to everyone. Also, there are scripts that change these time stamps to intervals. However, on larger machines these timestamps start appearing many seconds, and even minutes into the boot process. This patch gets stick-frequency property early from OpenBoot, and uses its value to initialize time stamps before the first printk() messages are printed. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NShannon Nelson <shannon.nelson@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
This patch prepares the code for early boot time stamps by making it more modular. - init_tick_ops() to initialize struct sparc64_tick_ops - new sparc64_tick_ops operation get_frequency() which returns a frequency Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NBob Picco <bob.picco@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
In clock sched we now have three loads: - Function pointer - quotient for multiplication - offset However, it is possible to improve performance substantially, by guaranteeing that all three loads are from the same cacheline. By moving these three values first in sparc64_tick_ops, and by having tick_operations 64-byte aligned we guarantee this. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NShannon Nelson <shannon.nelson@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
On most platforms, time is shown from the beginning of boot. This patch is adding offset to sched_clock() for SPARC, to also show time from 0. This means we will have one more load, but we saved one in an ealier patch. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NBob Picco <bob.picco@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Pavel Tatashin 提交于
In timer_64.c tick functions are access via pointer (tick_ops), every time clock is read, there is one extra load to get to the function. This patch optimizes it, by accessing functions pointer from value. Current ched_clock(): sethi %hi(0xb9b400), %g1 ldx [ %g1 + 0x250 ], %g1 ! <tick_ops> ldx [ %g1 ], %g1 call %g1 nop sethi %hi(0xb9b400), %g1 ldx [ %g1 + 0x300 ], %g1 ! <timer_ticks_per_nsec_quotient> mulx %o0, %g1, %g1 rett %i7 + 8 srlx %g1, 0xa, %o0 New sched_clock(): sethi %hi(0xb9b400), %g1 ldx [ %g1 + 0x340 ], %g1 call %g1 nop sethi %hi(0xb9b400), %g1 ldx [ %g1 + 0x378 ], %g1 mulx %o0, %g1, %g1 rett %i7 + 8 srlx %g1, 0xa, %o0 Before three loads, now two loads. Signed-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: NShannon Nelson <shannon.nelson@oracle.com> Reviewed-by: NSteven Sistare <steven.sistare@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 4月, 2017 1 次提交
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由 Nicolai Stange 提交于
In preparation for making the clockevents core NTP correction aware, all clockevent device drivers must set ->min_delta_ticks and ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a clockevent device's rate is going to change dynamically and thus, the ratio of ns to ticks ceases to stay invariant. Make the sparc arch's clockevent drivers initialize these fields properly. This patch alone doesn't introduce any change in functionality as the clockevents core still looks exclusively at the (untouched) ->min_delta_ns and ->max_delta_ns. As soon as this has changed, a followup patch will purge the initialization of ->min_delta_ns and ->max_delta_ns from these drivers. Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NNicolai Stange <nicstange@gmail.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 25 12月, 2016 2 次提交
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由 Thomas Gleixner 提交于
There is no point in having an extra type for extra confusion. u64 is unambiguous. Conversion was done with the following coccinelle script: @rem@ @@ -typedef u64 cycle_t; @fix@ typedef cycle_t; @@ -cycle_t +u64 Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org>
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由 Linus Torvalds 提交于
This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 8月, 2015 1 次提交
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由 Viresh Kumar 提交于
Migrate sparc drivers to the new 'set-state' interface provided by clockevents core, the earlier 'set-mode' interface is marked obsolete now. This also enables us to implement callbacks for new states of clockevent devices, for example: ONESHOT_STOPPED. We weren't doing anything which switching to few clockevent modes and so their callbacks aren't implemented. Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
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- 25 6月, 2015 1 次提交
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由 Xunlei Pang 提交于
On Sparc systems, update_persistent_clock() uses RTC drivers to do the job, it makes more sense to hand it over to CONFIG_RTC_SYSTOHC. In the long run, all the update_persistent_clock() should migrate to proper class RTC drivers if any and use CONFIG_RTC_SYSTOHC instead. Signed-off-by: NXunlei Pang <pang.xunlei@linaro.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
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- 20 10月, 2014 1 次提交
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由 Wolfram Sang 提交于
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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- 27 8月, 2014 1 次提交
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由 Christoph Lameter 提交于
__get_cpu_var() is used for multiple purposes in the kernel source. One of them is address calculation via the form &__get_cpu_var(x). This calculates the address for the instance of the percpu variable of the current processor based on an offset. Other use cases are for storing and retrieving data from the current processors percpu area. __get_cpu_var() can be used as an lvalue when writing data or on the right side of an assignment. __get_cpu_var() is defined as : #define __get_cpu_var(var) (*this_cpu_ptr(&(var))) __get_cpu_var() always only does an address determination. However, store and retrieve operations could use a segment prefix (or global register on other platforms) to avoid the address calculation. this_cpu_write() and this_cpu_read() can directly take an offset into a percpu area and use optimized assembly code to read and write per cpu variables. This patch converts __get_cpu_var into either an explicit address calculation using this_cpu_ptr() or into a use of this_cpu operations that use the offset. Thereby address calculations are avoided and less registers are used when code is generated. At the end of the patch set all uses of __get_cpu_var have been removed so the macro is removed too. The patch set includes passes over all arches as well. Once these operations are used throughout then specialized macros can be defined in non -x86 arches as well in order to optimize per cpu access by f.e. using a global register that may be set to the per cpu base. Transformations done to __get_cpu_var() 1. Determine the address of the percpu instance of the current processor. DEFINE_PER_CPU(int, y); int *x = &__get_cpu_var(y); Converts to int *x = this_cpu_ptr(&y); 2. Same as #1 but this time an array structure is involved. DEFINE_PER_CPU(int, y[20]); int *x = __get_cpu_var(y); Converts to int *x = this_cpu_ptr(y); 3. Retrieve the content of the current processors instance of a per cpu variable. DEFINE_PER_CPU(int, y); int x = __get_cpu_var(y) Converts to int x = __this_cpu_read(y); 4. Retrieve the content of a percpu struct DEFINE_PER_CPU(struct mystruct, y); struct mystruct x = __get_cpu_var(y); Converts to memcpy(&x, this_cpu_ptr(&y), sizeof(x)); 5. Assignment to a per cpu variable DEFINE_PER_CPU(int, y) __get_cpu_var(y) = x; Converts to __this_cpu_write(y, x); 6. Increment/Decrement etc of a per cpu variable DEFINE_PER_CPU(int, y); __get_cpu_var(y)++ Converts to __this_cpu_inc(y) Cc: sparclinux@vger.kernel.org Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 19 3月, 2014 1 次提交
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由 Viresh Kumar 提交于
Two cpufreq notifiers CPUFREQ_RESUMECHANGE and CPUFREQ_SUSPENDCHANGE have not been used for some time, so remove them to clean up code a bit. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Reviewed-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> [rjw: Changelog] Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 05 3月, 2014 1 次提交
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由 Thomas Gleixner 提交于
Let the core do the irq_desc resolution. No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20140223212737.635609567@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 13 1月, 2013 1 次提交
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由 Sam Ravnborg 提交于
__devinit, __devexit annotations are nops - so drop them. Likewise for __devexit_p. Adjusted alignment of arguments when needed. Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 1月, 2013 1 次提交
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由 Greg Kroah-Hartman 提交于
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 01 11月, 2011 1 次提交
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由 Paul Gortmaker 提交于
Many of the core sparc kernel files are not modules, but just including module.h for exporting symbols. Now these files can use the lighter footprint export.h for this role. Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 08 6月, 2011 1 次提交
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由 Joe Perches 提交于
Semicolons are not necessary after switch/while/for/if braces so remove them. Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 31 3月, 2011 1 次提交
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由 David S. Miller 提交于
Fix all of the problems spotted by CONFIG_DEBUG_SECTION_MISMATCH under arch/sparc during a 64-bit defconfig build. They fall into two categorites: 1) of_device_id is marked as __initdata, and we can never do this since these objects sit in the device core data structures way past boot. So even if a driver will never be reloaded, we have to keep the device ID table around. Mark such cases const instead. 2) The bootmem alloc/free handling code in mdesc.c was not fully marked __init as it should be, thus generating a reference to free_bootmem_late() (which is __init) from non-__init code. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 17 3月, 2011 1 次提交
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由 John Stultz 提交于
This converts the sparc clocksources to use clocksource_register_hz/khz Signed-off-by: NJohn Stultz <johnstul@us.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 28 2月, 2011 1 次提交
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由 Grant Likely 提交于
Get rid of old users of of_platform_driver in arch/sparc. Most of_platform_driver users can be converted to use the platform_bus directly. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 22 2月, 2011 1 次提交
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由 John Stultz 提交于
This converts the sparc clocksources to use clocksource_register_hz/khz CC: "David S. Miller" <davem@davemloft.net> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NJohn Stultz <johnstul@us.ibm.com>
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- 24 7月, 2010 2 次提交
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由 Grant Likely 提交于
of_device is just a #define alias to platform_device. This patch replaces all references to it with platform_device. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NDavid S. Miller <davem@davemloft.net>
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由 Grant Likely 提交于
Both of_bus_type and of_platform_bus_type are just #define aliases for the platform bus. This patch removes all references to them and switches to the of_register_platform_driver()/of_unregister_platform_driver() API for registering. Subsequent patches will convert each user of of_register_platform_driver() into plain platform_drivers without the of_platform_driver shim. At which point the of_register_platform_driver()/of_unregister_platform_driver() functions can be removed. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NDavid S. Miller <davem@davemloft.net>
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- 22 5月, 2010 1 次提交
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由 Grant Likely 提交于
.name, .match_table and .owner are duplicated in both of_platform_driver and device_driver. This patch is a removes the extra copies from struct of_platform_driver and converts all users to the device_driver members. This patch is a pretty mechanical change. The usage model doesn't change and if any drivers have been missed, or if anything has been fixed up incorrectly, then it will fail with a compile time error, and the fixup will be trivial. This patch looks big and scary because it touches so many files, but it should be pretty safe. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NSean MacLennan <smaclennan@pikatech.com>
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- 19 5月, 2010 1 次提交
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由 Grant Likely 提交于
The following structure elements duplicate the information in 'struct device.of_node' and so are being eliminated. This patch makes all readers of these elements use device.of_node instead. (struct of_device *)->node (struct dev_archdata *)->prom_node (sparc) (struct dev_archdata *)->of_node (powerpc & microblaze) Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 13 4月, 2010 2 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
This keeps us from having to use kstat_irqs_cpu() from the NMI handler, the former of which is a profiled function. Instead we use a currently empty slot in the cpu_data Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 12月, 2009 2 次提交
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由 David S. Miller 提交于
The type got changed to u32, so %lx generated warnings (and thus build failure on sparc64) Stephen Rothwell fixed it like so: - printk("clockevent: mult[%lx] shift[%d]\n", + printk("clockevent: mult[%ux] shift[%d]\n", But that's not a valid transformation, we now get: clockevent: mult[51539607x] shift[32] in the logs. Fix it to use the correct plain "%x" instead. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 16 11月, 2009 1 次提交
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由 Stephen Rothwell 提交于
The clockevent mult field became a u32. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20091116180118.aa1bf1e4.sfr@canb.auug.org.au> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 13 7月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
* Remove smp_lock.h from files which don't need it (including some headers!) * Add smp_lock.h to files which do need it * Make smp_lock.h include conditional in hardirq.h It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT This will make hardirq.h inclusion cheaper for every PREEMPT=n config (which includes allmodconfig/allyesconfig, BTW) Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 4月, 2009 1 次提交
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由 Magnus Damm 提交于
Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: NMagnus Damm <damm@igel.co.jp> Acked-by: NJohn Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 3月, 2009 1 次提交
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由 David Miller 提交于
arch/sparc/kernel/time_64.c: In function ‘timer_interrupt’: arch/sparc/kernel/time_64.c:732: error: ‘struct kernel_stat’ has no member named ‘irqs’ make[1]: *** [arch/sparc/kernel/time_64.o] Error 1 Signed-off-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 1月, 2009 1 次提交
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由 David Miller 提交于
Changeset d7e51e66 ("sparseirq: make some func to be used with genirq") broke the build on sparc64: arch/sparc/kernel/time_64.c: In function ‘timer_interrupt’: arch/sparc/kernel/time_64.c:732: error: implicit declaration of function ‘kstat_incr_irqs_this_cpu’ make[1]: *** [arch/sparc/kernel/time_64.o] Error 1 Signed-off-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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