linux-toradex.git/include/linux/profile.h, branch v4.14-rc3

sparc: fix sparse warnings in smp_32.c + smp_64.c

2014-05-19T02:01:33+00:00

Fix following warnings:
smp_32.c:177:5: warning: symbol 'setup_profiling_timer' was not declared. Should it be static?
smp_64.c:1202:5: warning: symbol 'setup_profiling_timer' was not declared. Should it be static?
smp_64.c:989:6: warning: symbol 'kgdb_roundup_cpus' was not declared. Should it be static?

Add prototype to include/linux/profile.h of setup_profiling_timer
Add missing include to smp_64.c

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

create_proc_cpu_mask() doesn't need an argument...

2013-04-09T18:13:35+00:00

Signed-off-by: Al Viro

profiling: Remove unused timer hook

2013-01-24T14:37:26+00:00

The last remaining user was oprofile and its use has been
removed a while ago in commit bc078e4eab65f11bba
("oprofile: convert oprofile from timer_hook to hrtimer").

There doesn't seem to be any upstream user of this hook
for about two years now. And I'm not even aware of any out of
tree user.

Let's remove it.

Signed-off-by: Frederic Weisbecker 
Cc: Alessio Igor Bogani 
Cc: Avi Kivity 
Cc: Chris Metcalf 
Cc: Christoph Lameter 
Cc: Geoff Levand 
Cc: Gilad Ben Yossef 
Cc: Hakan Akkan 
Cc: Paul E. McKenney 
Cc: Paul Gortmaker 
Cc: Peter Zijlstra 
Cc: Steven Rostedt 
Link: http://lkml.kernel.org/r/1356191991-2251-1-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar

profiling: fix up CONFIG_PROC_FS=n build

2008-10-23T15:55:01+00:00

In the case where procfs is disabled, create_proc_profile() does not
exist. Stub it in with the others.

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

profiling: dynamically enable readprofile at runtime

2008-10-16T18:21:31+00:00

Way too often, I have a machine that exhibits some kind of crappy
behavior.  The CPU looks wedged in the kernel or it is spending way too
much system time and I wonder what is responsible.

I try to run readprofile.  But, of course, Ubuntu doesn't enable it by
default.  Dang!

The reason we boot-time enable it is that it takes a big bufffer that we
generally can only bootmem alloc.  But, does it hurt to at least try and
runtime-alloc it?

To use:
echo 2 > /sys/kernel/profile

Then run readprofile like normal.

This should fix the compile issue with allmodconfig.  I've compile-tested
on a bunch more configs now including a few more architectures.

Signed-off-by: Dave Hansen 
Acked-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

build-kernel-profileo-only-when-requested-cleanups

2008-07-25T17:53:27+00:00

Cc: Adrian Bunk 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

build kernel/profile.o only when requested

2008-07-25T17:53:27+00:00

Build kernel/profile.o only if CONFIG_PROFILING is enabled.

This makes CONFIG_PROFILING=n kernels smaller.

As a bonus, some profile_tick() calls and one branch from schedule() are
now eliminated with CONFIG_PROFILING=n (but I doubt these are
measurable effects).

This patch changes the effects of CONFIG_PROFILING=n, but I don't think
having more than two choices would be the better choice.

This patch also adds the name of the first parameter to the prototypes
of profile_{hits,tick}() since I anyway had to add them for the dummy
functions.

Signed-off-by: Adrian Bunk 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Remove "#ifdef KERNEL" checks from unexported headers

2008-04-30T15:29:54+00:00

Remove the "#ifdef __KERNEL__" tests from unexported header files in
linux/include whose entire contents are wrapped in that preprocessor
test.

Signed-off-by: Robert P. J. Day 
Cc: David Woodhouse 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

make kernel/profile.c:time_hook static

2007-10-17T15:42:55+00:00

{,un}register_timer_hook() is the API that should be used.

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

[PATCH] KVM: add VM-exit profiling

2007-01-12T02:18:21+00:00

This adds the profile=kvm boot option, which enables KVM to profile VM
exits.

Use: "readprofile -m ./System.map | sort -n" to see the resulting
output:

   [...]
   18246 serial_out                               148.3415
   18945 native_flush_tlb                         378.9000
   23618 serial_in                                212.7748
   29279 __spin_unlock_irq                        622.9574
   43447 native_apic_write                        2068.9048
   52702 enable_8259A_irq                         742.2817
   54250 vgacon_scroll                             89.3740
   67394 ide_inb                                  6126.7273
   79514 copy_page_range                           98.1654
   84868 do_wp_page                                86.6000
  140266 pit_read                                 783.6089
  151436 ide_outb                                 25239.3333
  152668 native_io_delay                          21809.7143
  174783 mask_and_ack_8259A                       783.7803
  362404 native_set_pte_at                        36240.4000
 1688747 total                                      0.5009

Signed-off-by: Ingo Molnar 
Acked-by: Avi Kivity 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds