提交 · 74aadce986052f20088c2678f589ea0e8d3a4b59 · openeuler / Kernel

17 10月, 2007 40 次提交

core_pattern: allow passing of arguments to user mode helper when core_pattern is a pipe · 74aadce9

由 Neil Horman 提交于 10月 16, 2007

A rewrite of my previous post for this enhancement.  It uses jeremy's
split_argv/free_argv library functions to translate core_pattern into an argv
array to be passed to the user mode helper process.  It also adds a
translation to format_corename such that the origional value of RLIMIT_CORE
can be passed to userspace as an argument.
Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
Cc: <martin.pitt@ubuntu.com>
Cc: <wwoods@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

74aadce9

core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe · 7dc0b22e

由 Neil Horman 提交于 10月 16, 2007

For some time /proc/sys/kernel/core_pattern has been able to set its output
destination as a pipe, allowing a user space helper to receive and
intellegently process a core.  This infrastructure however has some
shortcommings which can be enhanced.  Specifically:

1) The coredump code in the kernel should ignore RLIMIT_CORE limitation
   when core_pattern is a pipe, since file system resources are not being
   consumed in this case, unless the user application wishes to save the core,
   at which point the app is restricted by usual file system limits and
   restrictions.

2) The core_pattern code should be able to parse and pass options to the
   user space helper as an argv array.  The real core limit of the uid of the
   crashing proces should also be passable to the user space helper (since it
   is overridden to zero when called).

3) Some miscellaneous bugs need to be cleaned up (specifically the
   recognition of a recursive core dump, should the user mode helper itself
   crash.  Also, the core dump code in the kernel should not wait for the user
   mode helper to exit, since the same context is responsible for writing to
   the pipe, and a read of the pipe by the user mode helper will result in a
   deadlock.

This patch:

Remove the check of RLIMIT_CORE if core_pattern is a pipe.  In the event that
core_pattern is a pipe, the entire core will be fed to the user mode helper.
Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
Cc: <martin.pitt@ubuntu.com>
Cc: <wwoods@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

7dc0b22e

argv_split: allow argv_split to handle NULL pointer in argcp parameter gracefully · 8e2b7056

由 Neil Horman 提交于 10月 16, 2007

It would be nice if the argv_split library function could gracefully handle
a NULL pointer in the argcp parameter, so as to allow functions using it
that did not care about the value of argc to not have to declare a useless
variable.  This patch accomplishes that.  Tested by me, with successful
results.
Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
Acked-by: NJeremy Fitzhardinge <jeremy@goop.org>
Cc: Satyam Sharma <satyam@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

8e2b7056

ufs: implement show_options · 2a9807c0

由 Evgeniy Dushistov 提交于 10月 16, 2007

An implementation of show_options method for UFS.
Signed-off-by: NEvgeniy Dushistov <dushistov@mail.ru>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

2a9807c0

Add in SunOS 4.1.x compatible mode for UFS · 252e211e

由 Mark Fortescue 提交于 10月 16, 2007

Add in support for SunOS 4.1.x flavor of BSD 4.2 UFS filing system Macros have
been put in to alow suport for the old static table Cylinder Groups but this
implementation does not use them yet.

This also fixes Solaris UFS filing system access by disabling fast symbolic
links as Sun's version of UFS does not support on-disk fast symbolic links.

Tested by:
  Ppartitioning a new disk using SunOS 4.1.1, creating a UFS filing system on
  one of the partitions and writing some files to the filing system.
  Using Linux-2.6.22 (patched) to read the files and then write a shed load of
  files to the UFS partition.
  Using SunOS 4.1.1 to verify the filing system is OK and to check the files.
The test host is a sun4c SS1 Clone.

[akpm@linux-foundation.org: coding style fixes]
[adobriyan@gmail.com: fix oops]
Signed-off-by: NMark Fortescue <mark@mtfhpc.demon.co.uk>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

252e211e

remove unused bh in calls to ext234_get_group_desc · ef2fb679

由 Eric Sandeen 提交于 10月 16, 2007

ext[234]_get_group_desc never tests the bh argument, and only sets it if it
is passed in; it is perfectly happy with a NULL bh argument.  But, many
callers send one in and never use it.  May as well call with NULL like
other callers who don't use the bh.
Signed-off-by: NEric Sandeen <sandeen@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

ef2fb679

fs: remove the unused mempages parameter · 74bf17cf

由 Denis Cheng 提交于 10月 16, 2007

Since the mempages parameter is actually not used, they should be removed.

Now there is only files_init use the mempages parameter,

 	files_init(mempages);

but I don't think the adaptation to mempages in files_init is really
useful; and if files_init also changed to the prototype void (*func)(void),
the wrapper vfs_caches_init would also not need the mempages parameter.
Signed-off-by: NDenis Cheng <crquan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

74bf17cf

Fix CONFIG_DEBUG_SHIRQ trigger on free_irq() · 1d99493b

由 David Woodhouse 提交于 10月 16, 2007

Andy Gospodarek pointed out that because we return in the middle of the
free_irq() function, we never actually do call the IRQ handler that just
got deregistered. This should fix it, although I expect Andrew will want
to convert those 'return's to 'break'. That's a separate change though.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Fernando Luis Vzquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

1d99493b

report the per-irq statistics on all arches · f13ef775

由 Ravikiran G Thirumalai 提交于 10月 16, 2007

Commit 4004c69a avoids too many remote cpu
references while reporting per-irq stats.  Since we will not have the same
performance penalty of bringing in remote cpu cachelines while reporting
per-irq stats anymore, we can now afford to be consistent and report this
statistic on all arches, all configs.

akpm: affects ia64, alpha and ppc64, mainly.

Kiran earlier said:

Read to /proc/stat takes:
Plain: 	2.622832
With speedup patch: 0.013194
With the per-irq stats commented out: 0.008124

So the performance problems which originally caused those architectures to
disable this statistic should now be fixed up.
Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: NLinus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

f13ef775

Remove "unsafe" from module struct · af49d924

由 Rusty Russell 提交于 10月 16, 2007

Adrian Bunk points out that "unsafe" was used to mark modules touched by
the deprecated MOD_INC_USE_COUNT interface, which has long gone.  It's time
to remove the member from the module structure, as well.

If you want a module which can't unload, don't register an exit function.

(Vlad Yasevich says SCTP is now safe to unload, so just remove the
__unsafe there).
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NShannon Nelson <shannon.nelson@intel.com>
Acked-by: NDan Williams <dan.j.williams@intel.com>
Acked-by: NVlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

af49d924

ext4: show all mount options · d9c9bef1

由 Miklos Szeredi 提交于 10月 16, 2007

Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

d9c9bef1

ext3: show all mount options · 571beed8

由 Miklos Szeredi 提交于 10月 16, 2007

Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

571beed8

ext2: show all mount options · 93d44cb2

由 Miklos Szeredi 提交于 10月 16, 2007

Using mtab is problematic for various reasons, one of them is that
unprivileged mounts won't turn up in there.  So we want to get rid of it, and
use /proc/mounts instead.

But most filesystems are lazy, and are not showing all mount options.  Which
means, that without mtab, the user won't be able to see some or all of the
options.

It would be nice if the generic code could remember the mount options, and
show them without the need to add extra code to filesystems.  But this is not
easy, because different filesystems handle mount options given options, and
not tough the rest.  This is not taken into account by mount(8) either, so
/etc/mtab will be broken in this case.

This series fixes up ->show_options() in ext[234].
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

93d44cb2

convert ill defined log2() to ilog2() · e57aa839

由 Fengguang Wu 提交于 10月 16, 2007

It's *wrong* to have
			#define log2(n) ffz(~(n))
It should be *reversed*:
			#define log2(n) flz(~(n))
or
			#define log2(n) fls(n)
or just use
			ilog2(n) defined in linux/log2.h.

This patch follows the last solution, recommended by Andrew Morton.

Cc: <linux-ext4@vger.kernel.org>
Cc: Mingming Cao <cmm@us.ibm.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Chris Ahna <christopher.j.ahna@intel.com>
Cc: David Mosberger-Tang <davidm@hpl.hp.com>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: NFengguang Wu <wfg@mail.ustc.edu.cn>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

e57aa839

time: simplify smp_call_function_single() call sequence · bf020cb7

由 Avi Kivity 提交于 10月 16, 2007

smp_call_function_single() now knows how to call the function on the
current cpu.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

bf020cb7

Clean up duplicate includes in kernel/ · a9022e9c