01 Nov, 2011
1 commit
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None of these files are using modular infrastructure, and build
tests reveal that none of these files are really relying on any
implicit inclusions via. module.h either. So delete them.Signed-off-by: Paul Gortmaker
17 Sep, 2011
1 commit
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If we could find tc on the tc list for @index, the found tc should be returned.
Signed-off-by: Hillf Danton
To: LKML
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2692/
Signed-off-by: Ralf Baechle
27 Jul, 2011
1 commit
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This allows us to move duplicated code in
(atomic_inc_not_zero() for now) toSigned-off-by: Arun Sharma
Reviewed-by: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Cc: Eric Dumazet
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
15 Mar, 2011
1 commit
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SPIN_LOCK_UNLOCK is deprecated. Use the lockdep capable variant instead.
Signed-off-by: Thomas Gleixner
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2025/
Signed-off-by: Ralf Baechle
17 Dec, 2010
1 commit
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The return value of the vmalloc() call in arch/mips/kernel/vpe.c::vpe_open()
is not checked, so we potentially store a null pointer in v->pbuffer. Add
a check for a null return and then return -ENOMEM in that case.[Ralf: The check added by Jesper's original patch is where it logically
should be. Adding it eleminated the need for the checks in a few other
places, so I removed them. There still is a zillion of other things that
need to be fixed in this file / API.]Signed-off-by: Jesper Juhl
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1747/
Signed-off-by: Ralf Baechle
15 Oct, 2010
1 commit
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All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time. Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
// but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{}
@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{}
@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{}
@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{}
@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}@ fops0 @
identifier fops;
@@
struct file_operations fops = {
...
};@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
.llseek = llseek_f,
...
};@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
.read = read_f,
...
};@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
.write = write_f,
...
};@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
.open = open_f,
...
};// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
... .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
... .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
... .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+ .llseek = default_llseek, /* write accesses f_pos */
};// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
.write = write_f,
.read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====Signed-off-by: Arnd Bergmann
Cc: Julia Lawall
Cc: Christoph Hellwig
27 Feb, 2010
1 commit
-
Signed-off-by: Ralf Baechle
02 Nov, 2009
1 commit
-
Signed-off-by: Ralf Baechle
Reported-by: Josip Rodin
01 Oct, 2009
1 commit
-
Signed-off-by: Ralf Baechle
18 Sep, 2009
1 commit
-
Signed-off-by: Ralf Baechle
04 Aug, 2009
5 commits
-
Signed-off-by: Ralf Baechle
-
Signed-off-by: Ralf Baechle
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None of these is used outside the VPE loader.
Signed-off-by: Ralf Baechle
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This may happen if a bad sequence of relocations is being encountered.
Signed-off-by: Ralf Baechle
-
Signed-off-by: Raghu Gandham
Signed-off-by: Ralf Baechle
03 Jul, 2009
1 commit
-
Signed-off-by: Joe Perches
Signed-off-by: Ralf Baechle
07 Jan, 2009
1 commit
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Cc: Ralf Baechle
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
25 Dec, 2008
1 commit
06 Dec, 2008
1 commit
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It should be 'lose', not 'loose'.
Signed-off-by: Nick Andrew
Signed-off-by: Ralf Baechle
14 Nov, 2008
1 commit
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Attach creds to file structs and discard f_uid/f_gid.
file_operations::open() methods (such as hppfs_open()) should use file->f_cred
rather than current_cred(). At the moment file->f_cred will be current_cred()
at this point.Signed-off-by: David Howells
Reviewed-by: James Morris
Signed-off-by: James Morris
19 May, 2008
1 commit
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Push the cdev lock_kernel() call into MIPS-specific drivers.
Signed-off-by: Jonathan Corbet
12 May, 2008
3 commits
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Signed-off-by: Cyrill Gorcunov
Signed-off-by: Ralf Baechle -
Still won't play nicely with esotheric configurations such as discontig
memory ...Signed-off-by: Ralf Baechle
-
Signed-off-by: Kevin D. Kissell
Signed-off-by: Ralf Baechle
01 Apr, 2008
1 commit
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And while at it, make it a little cleaner. Issue originally reported by
Tiejun Chen (tiejun.chen@windriver.com).Signed-off-by: Ralf Baechle
29 Jan, 2008
1 commit
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Signed-off-by: Lucas Woods
Signed-off-by: Ralf Baechle
27 Nov, 2007
1 commit
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Signed-off-by: Joe Perches
Signed-off-by: Ralf Baechle
16 Nov, 2007
1 commit
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Adds a JR.HB after halting a TC, to ensure that the TC has really halted.
only modifies the TCSTATUS register when the TC is safely halted.Signed-off-by: Ralf Baechle
30 Oct, 2007
1 commit
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This subtle difference makes ELF overlays work.
Signed-off-by: Ralf Baechle
17 Oct, 2007
1 commit
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Signed-off-by: Kay Sievers
Signed-off-by: Ralf Baechle
12 Oct, 2007
2 commits
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Loading ELF binaries based on the section table is totally wrong. This
still leaves the other fat bug of referencing symbols in an executable
unfixed, so people better don't run strip on their binaries ...As added bonus the new loader is also 23 lines shorter.
Signed-off-by: Ralf Baechle
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Signed-off-by: Ralf Baechle
01 Aug, 2007
3 commits
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The old method of attempting to load a invalid program was just too icky.
Signed-off-by: Ralf Baechle
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Signed-off-by: Ralf Baechle
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Signed-off-by: Ralf Baechle
24 Jul, 2007
1 commit
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Replaces the deprecated __attribute_used__ with __used. Also makes some
style adjustments to abide by the kernel coding conventions.Cc: Ralf Baechle
Signed-off-by: David Rientjes
Signed-off-by: Ralf Baechle
06 Jul, 2007
1 commit
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C0_status doesn't need to be initialized at this point anyway; the register
will be initialized later.Signed-off-by: Ralf Baechle
27 Feb, 2007
1 commit
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Signed-off-by: Ralf Baechle
13 Feb, 2007
1 commit
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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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds