- 29 3月, 2011 1 次提交
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由 Thomas Gleixner 提交于
Convert to new function names. Converted with coccinelle. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 24 3月, 2011 4 次提交
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由 Akinobu Mita 提交于
minix bit operations are only used by minix filesystem and useless by other modules. Because byte order of inode and block bitmaps is different on each architecture like below: m68k: big-endian 16bit indexed bitmaps h8300, microblaze, s390, sparc, m68knommu: big-endian 32 or 64bit indexed bitmaps m32r, mips, sh, xtensa: big-endian 32 or 64bit indexed bitmaps for big-endian mode little-endian bitmaps for little-endian mode Others: little-endian bitmaps In order to move minix bit operations from asm/bitops.h to architecture independent code in minix filesystem, this provides two config options. CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k. CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu, m32r, mips, sh, xtensa). The architectures which always use little-endian bitmaps do not select these options. Finally, we can remove minix bit operations from asm/bitops.h for all architectures. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NGreg Ungerer <gerg@uclinux.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Hirokazu Takata <takata@linux-m32r.org> Acked-by: NRalf Baechle <ralf@linux-mips.org> Acked-by: NPaul Mundt <lethal@linux-sh.org> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Akinobu Mita 提交于
As the result of conversions, there are no users of ext2 non-atomic bit operations except for ext2 filesystem itself. Now we can put them into architecture independent code in ext2 filesystem, and remove from asm/bitops.h for all architectures. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Akinobu Mita 提交于
Introduce little-endian bit operations to the big-endian architectures which do not have native little-endian bit operations and the little-endian architectures. (alpha, avr32, blackfin, cris, frv, h8300, ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa) These architectures can just include generic implementation (asm-generic/bitops/le.h). Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: NHans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: N"H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Richard Henderson 提交于
GCC 4.6 explicitly represents the MDR register. It may be accessed via the "z" constraint. Perhaps more importantly, it tracks when the MDR register is clobbered and uses the RETF instruction if the incoming value is still valid. Thus it is important to (at least) clobber the MDR register in relevant inline assembly fragments, lest RETF be used incorrectly. The only instances I could find are here. There are reads of the MDR register in kernel/gdb-stub.c, but that's harmless. Although, frankly, __builtin_return_address(0) might be a better thing in those cases. Certainly MDR isn't going to contain anything else that might be useful... Signed-off-by: NRichard Henderson <rth@redhat.com> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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- 23 3月, 2011 2 次提交
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由 FUJITA Tomonori 提交于
All architectures can use the common dma_addr_t typedef now. We can remove the arch specific dma_addr_t. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NArnd Bergmann <arnd@arndb.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Matt Turner <mattst88@gmail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Eric Dumazet 提交于
Add a node parameter to alloc_thread_info(), and change its name to alloc_thread_info_node() This change is needed to allow NUMA aware kthread_create_on_cpu() Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Reviewed-by: NAndi Kleen <ak@linux.intel.com> Acked-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Tejun Heo <tj@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 19 3月, 2011 24 次提交
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由 David Howells 提交于
Deprecate the MN10300 arch's gdbstub in favour of KGDB, which is more capable in some areas (such as SMP) and almost as capable in others (it's I/O is not as decoupled and it can't start as early). gdbstub will be removed in a later version when we're satisfied with KGDB's working. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Allow KGDB to use the MN10300 serial ports through the polled I/O interface provided via the TTY/serial layer and the kgdboc driver. This allows the kernel to be started with something like: kgdboc=ttySM0,115200 added to the command line. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Emulate single stepping in KGDB on MN10300 by way of temporary breakpoint insertion. These breakpoints are never actually seen by KGDB, and will overlay KGDB's own breakpoints. The breakpoints are removed by switch_to() and reinstalled on switching back so that if preemption occurs, the preempting task doesn't hit them (though it will still hit KGDB's regular breakpoints). If KGDB is reentered for any reason, then the single step breakpoint is completely erased and must be set again by the debugger. We take advantage of the fact that KGDB will effectively halt all other CPUs whilst this CPU is single-stepping to avoid SMP problems. If the single-stepping task is preempted and killed without KGDB being reinvoked, then the breakpoint(s) will be cleared and KGDB will be jumped back into. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Generalise the kernel debugger hook for notification of halt, reboot or power off. This is used by gdbstub to tell the debugger it is exiting. This will be useful for KGDB too. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
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由 David Howells 提交于
Create generic kernel debugger hooks in the MN10300 arch and make gdbstub use them. This is a preparation for KGDB support. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Create general kernel debugger cache flushing for MN10300 and get rid of the old stuff that gdbstub was using. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Introduce a general config option for kernel debugger hooks so that both gdbstub and kgdb can use it and add a header file for both debuggers to use. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
The icache invalidate functions should disable the icache on AM33 and wait for it to quiesce before attempting to invalidate it, and should then wait for it to quiesce again before reenabling it, but on AM34 they should invalidate directly. The same goes for the dcache invalidation, but this isn't used much. Whilst we're at it, this can be wrapped in assembler macros to remove duplicate code. The AM33 manual states that: An operation that invalidates the cache, switches the writing mode, or changes the way mode must be performed after disabling the cache, checking the busy bit, and confirming that the cache is not in operation. for the dcache [sec 2.8.3.2.1]. This is not stated so for the icache [sec 2.8.3.1.1] but the example code there suggests that it is. Whilst the AM34 manual states that the cache must be disabled for both the icache [sec 1.8.3.2.1] and the dcache [sec 1.8.3.2.1], the Panasonic hardware engineers say the manual is wrong and that disabling the caches for invalidation is wrong. Furthermore, they say that disabling the caches on the AM34 whilst running an SMP kernel can lead to incoherency between the various CPU caches and should thus be avoided. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Restrict single-stepping through the kernel using gdbstub to non-preemptable non-SMP configs as gdbstub has to do software single-stepping by means of temporary breakpoints. Hardware single-stepping is unavailable as Panasonic have not sufficiently documented the interface to it. Software single-stepping through preemptable or SMP kernels runs into problems as it makes it much more likely that the wrong thread will hit the temporary breakpoints. It seems impractical to work around the problem for the most part. It could be possible to make a UP preemptable kernel switch temporary breakpoints in and out in switch_to(). Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Clear the interrupt mask registers of ASB2364 peripherals before enabling interrupts so that any peripherals that weren't dealt with by the bootloader after a reboot (if there was one) won't cause an interrupt storm when interrupts are first enabled before the drivers are initialised. Also, attempt to reset the peripherals attached to the FPGA. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Fix the ASB2364 gdbport UART register definitions. These registers are actually 2 bytes apart, not 4 (which the ASB2303 and ASB2305 are). Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Fix the definition of the ASB2364 FPGA IRQ detect registers. They accidentally got defined to be the same as the mask registers when the patches were being ported to the upstream kernel. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
All chips converted. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
Select HAVE_GENERIC_HARDIRQS rather than GENERIC_HARDIRQS in MN10300's main Kconfig file to avoid this warning: warning: (MN10300) selects GENERIC_HARDIRQS which has unmet direct dependencies (HAVE_GENERIC_HARDIRQS) Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
No users. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
irq_chip.end is obsolete with the removal of __do_IRQ(). Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
Use clockevents_calc_mult_shift() instead of the homebrewn function in mn10300/kernel/time.c. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NJohn Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
clocksource_register_hz() calculates the shift/mult pair for the clocksource. Remove the mn10300 duplicate implementation. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NJohn Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
mn10300 implements clocksource and clockevents and selects them unconditionally in Kconfig. Remove the stale code which seems to be a leftover of the conversion. Cleanup the configuration switches as well. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NJohn Stultz <johnstul@us.ibm.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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- 14 3月, 2011 3 次提交
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由 David Howells 提交于
atomic_read() needs to ensure that it emits a load (which it can do by using ACCESS_ONCE()). Reported-by: NPeter Zijlstra <peterz@infradead.org> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 David Howells 提交于
The invalidate-only versions of flush_icache_*range() are trying sending the SMP_ICACHE_INV_FLUSH_RANGE IPI command in SMP kernels when they should be sending SMP_ICACHE_INV_RANGE as the former does not exist. Signed-off-by: NDavid Howells <dhowells@redhat.com>
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由 Tkhai Kirill 提交于
Using __get_user_check(x, ptr++, size) leads to double increment of pointer. This macro uses the macro get_user directly, which itself is used in this way (get_user(x, ptr++)) in some functions of the kernel. The patch fixes the error. Reported-by: NTkhai Kirill <tkhai@yandex.ru> Signed-off-by: NDavid Howells <dhowells@redhat.com>
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- 09 2月, 2011 1 次提交
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由 Torben Hohn 提交于
Only one CPU gets the timer interrupt so mn10300_last_tsc does not need to be protected by xtime lock. Remove xtime lovking and use xtime_update() which does the locking itself. Signed-off-by: NTorben Hohn <torbenh@gmx.de> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> LKML-Reference: <20110127150011.23248.62040.stgit@localhost> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 25 1月, 2011 1 次提交
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由 Tejun Heo 提交于
Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: NTejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
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- 21 1月, 2011 3 次提交
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由 Thomas Gleixner 提交于
No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NDavid Howells <dhowells@redhat.com>
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由 Thomas Gleixner 提交于
All architectures are finally converted. Remove the cruft. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Michal Simek <monstr@monstr.eu> Acked-by: NDavid Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jeff Dike <jdike@addtoit.com>
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由 David Rientjes 提交于
The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: NIngo Molnar <mingo@elte.hu> Acked-by: NDavid Woodhouse <david.woodhouse@intel.com> Signed-off-by: NDavid Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 14 1月, 2011 1 次提交
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由 Amerigo Wang 提交于
For arch which needs USE_GENERIC_SMP_HELPERS, it has to select USE_GENERIC_SMP_HELPERS, rather than leaving a choice to user, since they don't provide their own implementions. Also, move on_each_cpu() to kernel/smp.c, it is strange to put it in kernel/softirq.c. For arch which doesn't use USE_GENERIC_SMP_HELPERS, e.g. blackfin, only on_each_cpu() is compiled. Signed-off-by: NAmerigo Wang <amwang@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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