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authorRobert Richter <robert.richter@amd.com>2011-02-11 17:31:44 +0100
committerRobert Richter <robert.richter@amd.com>2011-02-15 11:10:20 +0100
commita0d76247e07abd14968adc4486aaa8e270e9c209 (patch)
treebec9fa0f5a3c7b3d1f3c3032900d74f41941ed2d /include/linux/oprofile.h
parent997dbb4967da248808850c250182ef2528fff2d1 (diff)
downloadlinux-linaro-stable-a0d76247e07abd14968adc4486aaa8e270e9c209.tar.gz
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.h21
1 files changed, 0 insertions, 21 deletions
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index b517d869e1ad..7f5cfd3b37dd 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.
*/