diff options
author | Robert Richter <robert.richter@amd.com> | 2011-02-11 17:31:44 +0100 |
---|---|---|
committer | Robert Richter <robert.richter@amd.com> | 2011-02-15 11:10:20 +0100 |
commit | a0d76247e07abd14968adc4486aaa8e270e9c209 (patch) | |
tree | bec9fa0f5a3c7b3d1f3c3032900d74f41941ed2d /include/linux/oprofile.h | |
parent | 997dbb4967da248808850c250182ef2528fff2d1 (diff) |
oprofile, s390: Rework hwsampler implementation
This patch is a rework of the hwsampler oprofile implementation that
has been applied recently. Now there are less non-architectural
changes. The only changes are:
* introduction of oprofile_add_ext_hw_sample(), and
* removal of section attributes of oprofile_timer_init/_exit().
To setup hwsampler for oprofile we need to modify start()/stop()
callbacks and additional hwsampler control files in oprofilefs. We do
not reinitialize the timer or hwsampler mode by restarting calling
init/exit() anymore, instead hwsampler_running is used to switch the
mode directly in oprofile_hwsampler_start/_stop(). For locking reasons
there is also hwsampler_file that reflects the value in oprofilefs.
The overall diffstat of the oprofile s390 hwsampler implemenation
shows the low impact to non-architectural code:
arch/Kconfig | 3 +
arch/s390/Kconfig | 1 +
arch/s390/oprofile/Makefile | 2 +-
arch/s390/oprofile/hwsampler.c | 1256 ++++++++++++++++++++++++++++++++++
arch/s390/oprofile/hwsampler.h | 113 +++
arch/s390/oprofile/hwsampler_files.c | 162 +++++
arch/s390/oprofile/init.c | 6 +-
drivers/oprofile/cpu_buffer.c | 24 +-
drivers/oprofile/timer_int.c | 4 +-
include/linux/oprofile.h | 7 +
10 files changed, 1567 insertions(+), 11 deletions(-)
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'include/linux/oprofile.h')
-rw-r--r-- | include/linux/oprofile.h | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index b517d869e1a..7f5cfd3b37d 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -91,27 +91,6 @@ int oprofile_arch_init(struct oprofile_operations * ops); */ void oprofile_arch_exit(void); -#ifdef CONFIG_HAVE_HWSAMPLER -/** - * setup hardware sampler for oprofiling. - */ - -int oprofile_set_hwsampler(unsigned long); - -/** - * hardware sampler module initialization for the s390 arch - */ - -int oprofile_arch_set_hwsampler(struct oprofile_operations *ops); - -/** - * Add an s390 hardware sample. - */ -void oprofile_add_ext_hw_sample(unsigned long pc, struct pt_regs * const regs, - unsigned long event, int is_kernel, - struct task_struct *task); -#endif /* CONFIG_HAVE_HWSAMPLER */ - /** * Add a sample. This may be called from any context. */ |