linux.git/init/main.c, branch v2.6.17.10

[PATCH] silence initcall warnings

2006-05-02T01:17:43+00:00

Suppress the initcall-return-value warnings unless initcall_debug was
specified.

They do find bugs, but they're extremely small ones and as Andi points out,
people get distressed.

Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28T17:16:05+00:00

replaces for_each_cpu with for_each_possible_cpu().

Signed-off-by: KAMEZAWA Hiroyuki 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] remove fixup_cpu_present_map()

2006-03-26T16:56:57+00:00

Since the addition of boot_cpu_init(), fixup_cpu_present_map() has been a
no-op.  That's because fixup_cpu_present_map() won't touch cpu_present_map if
it has any bits set, and boot_cpu_init() sets a bit.

So remove fixup_cpu_present_map().

A consequence of this (actually of the boot_cpu_init() change) is that the
architecture _must_ populate cpu_present_map itself (probably in
smp_prepare_cpus()).  fixup_cpu_present_map() won't do it any more.

If the architecture doesn't do this, it'll only bring up a single CPU.

The other side effect (though less serious) is that smp_prepare_boot_cpu() no
longer needs to mark the boot cpu in the online and present maps -
boot_cpu_init() does that for everyone (to make early printks work).

Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] add a proper prototype for setup_arch()

2006-03-25T16:22:56+00:00

This patch adds a proper prototype for setup_arch() in init.h.

This patch is based on a patch by Ben Dooks .

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] initcall failure reporting

2006-03-25T16:22:53+00:00

We presently ignore the return values from initcalls.  But that can carry
useful debugging information.  So print it out if it's non-zero.

It turns out the -ENODEV happens quite a lot, due to built-in drivers which
have no hardware to drive.  So suppress that unless initcall_debug was
specified.

Also make the warning message more friendly by printing the name of the
initcall function.

Also drop the KERN_DEBUG from the initcall_debug message.  If we specified
inticall_debug then we obviously want to see the messages.

Acked-by: Paul Jackson 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] __GENERIC_PER_CPU changes

2006-03-23T15:38:17+00:00

Now CONFIG_DEBUG_INITDATA is in, initial percpu data
[__per_cpu_start,__per_cpu_end] can be declared as a redzone, and invalid
accesses after boot can be detected, at least for i386.

We can let non possible cpus percpu data point to this 'redzone' instead of
NULL .

NULL was not a good choice because part of [0..32768] memory may be
readable and invalid accesses may happen unnoticed.

If CONFIG_DEBUG_INITDATA is not defined, each non possible cpu points to
the initial percpu data (__per_cpu_offset[cpu] == 0), thus invalid accesses
wont be detected/crash.

This patch also moves __per_cpu_offset[] to read_mostly area to avoid false
sharing.

Signed-off-by: Eric Dumazet 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Only allocate percpu data for possible CPUs

2006-03-23T15:38:17+00:00

percpu_data blindly allocates bootmem memory to store NR_CPUS instances of
cpudata, instead of allocating memory only for possible cpus.

This patch saves ram, allocating num_possible_cpus() (instead of NR_CPUS)
instances.

Signed-off-by: Eric Dumazet 
Acked-by: "David S. Miller" 
Cc: James Bottomley 
Cc: Jens Axboe 
Acked-by: Ingo Molnar 
Cc: Jens Axboe 
Cc: Anton Blanchard 
Acked-by: William Irwin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Register the boot-cpu in the cpu maps earlier

2006-03-23T15:38:05+00:00

Register the boot-cpu in the cpu maps earlier to allow the early printk to
work, and to fix an obscure deadlock at boot.

Signed-off-by: Stas Sergeev 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] remove bogus comment from init/main.c

2006-02-10T16:13:12+00:00

Remove bogus comment from init function which could lead to the assumption
that cpu_possible_map is setup in smp_prepare_cpus().

Signed-off-by: Heiko Carstens 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] abandon gcc 295x main.c tidy

2006-01-15T02:27:12+00:00

After abandon-gcc-295x.patch, this relocates the error-out-early comment.

Signed-off-by: Coywolf Qi Hunt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds