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commit ab772027 (sparc: arch/sparc/kernel/apc.c to unlocked_ioctl)
added lock/unlock_kernel() to the apc ioctl code.
The code needs no serialization at all. Neither put/get_user nor the
read/write access to the sbus devices require it. Remove BKL.
cycle_kernel_lock() was added during the big BKL pushdown. It should
ensure the serializiation against driver init code. In this case there
is nothing to serialize. Remove it as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The latest mainline gives this section mismatch on sparc:
The function __devinit apc_probe() references
a variable __initdata apc_no_idle.
If apc_no_idle is only used by apc_probe then
annotate apc_no_idle with a matching annotation.
Since the commit 7e7e2f035663c5ceb029bfb9d91e75099b0a5625,
apc_probe() is on __devinit so we have to correct apc_no_idle
which is referenced by this function.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As suggested by Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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This changes arch/sparc/kernel/apc.c to use unlocked_ioctl
Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch contains the following possible cleanups:
- make the following needlessly global code static:
- apc.c: apc_swift_idle()
- ebus.c: ebus_blacklist_irq()
- ebus.c: fill_ebus_child()
- ebus.c: fill_ebus_device()
- entry.S: syscall_is_too_hard
- etra: tsetup_sun4c_stackchk
- head.S: cputyp
- head.S: prom_vector_p
- idprom.c: Sun_Machines[]
- ioport.c: _sparc_find_resource()
- ioport.c: create_proc_read_entry()
- irq.c: struct sparc_irq[]
- rtrap.S: sun4c_rett_stackchk
- setup.c: prom_sync_me()
- setup.c: boot_flags
- sun4c_irq.c: sun4c_sbint_to_irq()
- sun4d_irq.c: sbus_tid[]
- sun4d_irq.c: struct sbus_actions
- sun4d_irq.c: sun4d_sbint_to_irq()
- sun4m_irq.c: sun4m_sbint_to_irq()
- sun4m_irq.c: sun4m_get_irqmask()
- sun4m_irq.c: sun4m_timers
- sun4m_smp.c: smp4m_cross_call()
- sun4m_smp.c: smp4m_blackbox_id()
- sun4m_smp.c: smp4m_blackbox_current()
- time.c: sp_clock_typ
- time.c: sbus_time_init()
- traps.c: instruction_dump()
- wof.S: spwin_sun4c_stackchk
- wuf.S: sun4c_fwin_stackchk
- #if 0 the following unused code:
- process.c: sparc_backtrace_lock
- process.c: __show_backtrace()
- process.c: show_backtrace()
- process.c: smp_show_backtrace_all_cpus()
- remove the following unused code:
- entry.S: __handle_exception
- smp.c: smp_num_cpus
- smp.c: smp_activated
- smp.c: __cpu_number_map[]
- smp.c: __cpu_logical_map[]
- smp.c: bitops_spinlock
- traps.c: trap_curbuf
- traps.c: trapbuf[]
- traps.c: linux_smp_still_initting
- traps.c: thiscpus_tbr
- traps.c: thiscpus_mid
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Many struct file_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.
[akpm@osdl.org: sparc64 fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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