- 24 9月, 2009 1 次提交
-
-
由 Li Zefan 提交于
Remove open-coded zalloc_cpumask_var() and zalloc_cpumask_var_node(). Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
-
- 22 9月, 2009 1 次提交
-
-
由 Alexey Dobriyan 提交于
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>
-
- 20 7月, 2009 6 次提交
-
-
由 Robert Richter 提交于
This patch moves the multiplexing switch counter from x86 code to common oprofile statistic variables. Now the value will be available and usable for all architectures. The initialization and incrementation also moved to common code. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This patch moves multiplexing code to a single section of code. This reduces the use of #ifdefs especially within functions. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
oprofile_multiplexing_init() can be removed when moving the initialization of oprofile_time_slice to oprofile_create_files(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This patch renames timeout_jiffies into an oprofile specific name. The macro MULTIPLEXING_TIMER_DEFAULT is changed too. Also, since this variable is controlled using oprofilefs, its definition is moved to oprofile_files.c. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Return with -EINVAL for invalid parameters instead of setting the default value in oprofile_set_timeout(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Jason Yeh 提交于
The number of hardware counters is limited. The multiplexing feature enables OProfile to gather more events than counters are provided by the hardware. This is realized by switching between events at an user specified time interval. A new file (/dev/oprofile/time_slice) is added for the user to specify the timer interval in ms. If the number of events to profile is higher than the number of hardware counters available, the patch will schedule a work queue that switches the event counter and re-writes the different sets of values into it. The switching mechanism needs to be implemented for each architecture to support multiplexing. This patch only implements AMD CPU support, but multiplexing can be easily extended for other models and architectures. There are follow-on patches that rework parts of this patch. Signed-off-by: NJason Yeh <jason.yeh@amd.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
- 10 7月, 2009 1 次提交
-
-
由 Maynard Johnson 提交于
The bt_lost_no_mapping is not getting reset at the start of a profiling run, thus the oprofiled.log shows erroneous values for this statistic. The attached patch fixes this problem. Signed-off-by: NMaynard Johnson <maynardj@us.ibm.com> Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 12 6月, 2009 2 次提交
-
-
由 Maynard Johnson 提交于
The bt_lost_no_mapping is not getting reset at the start of a profiling run, thus the oprofiled.log shows erroneous values for this statistic. The attached patch fixes this problem. Signed-off-by: NMaynard Johnson <maynardj@us.ibm.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
The IBS implemention writes 64 bit register values to the cpu buffer by writing two 32 values using oprofile_add_data(). This patch introduces oprofile_add_data64() to write a single 64 bit value to the buffer. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
- 11 6月, 2009 1 次提交
-
-
由 Robert Richter 提交于
This became obsolete with this commit: 6dad828b oprofile: port to the new ring_buffer Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
- 07 5月, 2009 1 次提交
-
-
由 Robert Richter 提交于
The unit of oprofile_cpu_buffer_size is in samples, but was allocated in bytes. This led to the allocation of too small cpu buffers. This patch recalculates the buffer size in bytes taking also the ring_buffer_event header size into account. Reported-by: NSuravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
- 30 3月, 2009 1 次提交
-
-
由 Russell King 提交于
Impact: fix ref to discarded function `buffer_sync_cleanup' referenced in section `.init.text' of arch/arm/oprofile/built-in.o: defined in discarded section `.exit.text' of arch/arm/oprofile/built-in.o Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
-
- 06 2月, 2009 1 次提交
-
-
由 Ingo Molnar 提交于
Oprofile's ring-buffer use was not considered. Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 22 1月, 2009 1 次提交
-
-
由 Robert Richter 提交于
Delta patch to f7df8ed1 for tip/cpus4096. Moved initialization to sync_start()/sync_stop(). No changes needed in buffer_sync.h and oprof.c anymore. Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 18 1月, 2009 1 次提交
-
-
由 Robert Richter 提交于
Impact: fix crash In case of losing samples struct op_entry could have been used uninitialized causing e.g. a wrong preemption count or NULL pointer access. This patch fixes this. Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 12 1月, 2009 1 次提交
-
-
由 Rusty Russell 提交于
Impact: use new cpumask API. Convert misc driver functions to use struct cpumask. To Do: - Convert iucv_buffer_cpumask to cpumask_var_t. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NMike Travis <travis@sgi.com> Acked-by: NDean Nelson <dcn@sgi.com> Cc: Robert Richter <robert.richter@amd.com> Cc: oprofile-list@lists.sf.net Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: virtualization@lists.osdl.org Cc: xen-devel@lists.xensource.com Cc: Ursula Braun <ursula.braun@de.ibm.com> Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org
-
- 08 1月, 2009 15 次提交
-
-
由 Robert Richter 提交于
This patch creates the new functions oprofile_write_reserve() oprofile_add_data() oprofile_write_commit() and makes them part of the oprofile api. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
The ifdefs can be removed since the code is no longer ibs specific and can be used for other purposes as well. IBS specific code is only in op_model_amd.c. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
The new ring buffer implementation allows the storage of samples with different size. This patch implements the usage of the new sample format to store ibs samples in the cpu buffer. Until now, writing to the cpu buffer could lead to incomplete sampling sequences since IBS samples were transfered in multiple samples. Due to a full buffer, data could be lost at any time. This can't happen any more since the complete data is reserved in advance and then stored in a single sample. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This function provides access to attached data of a sample. It returns the size of data including the current value. Also, op_cpu_buffer_get_size() is available to check if there is data attached. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This function can be used to attach data to a sample. It returns the remaining free buffer size that has been reserved with op_cpu_buffer_write_reserve(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Special events such as task or context switches are marked with an escape code in the cpu buffer followed by an event code or a task identifier. There is one escape code per event. To make escape sequences also available for data samples the internal cpu buffer format must be changed. The current implementation does not allow the extension of event codes since this would lead to collisions with the task identifiers. To avoid this, this patch introduces an event mask that allows the storage of multiple events with one escape code. Now, task identifiers are stored in the data section of the sample. The implementation also allows the usage of custom data in a sample. As a side effect the new code is much more readable and easier to understand. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This implements the support of samples with attached data. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This function prepares the cpu buffer to write a sample. Struct op_entry is used during operations on the ring buffer while struct op_sample contains the data that is stored in the ring buffer. Struct entry can be uninitialized. The function reserves a data array that is specified by size. Use op_cpu_buffer_write_commit() after preparing the sample. In case of errors a null pointer is returned, otherwise the pointer to the sample. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This unifies usage of variable names within oprofile. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Rename the fucntion to op_add_sample() since there is a collision with another one with the same name in buffer_sync.c. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This code is broken since a TRACE_BEGIN_CODE is never sent to the daemon. The data becomes corrupt since the backtrace is interpreted as ibs sample. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
- 06 1月, 2009 1 次提交
-
-
由 Al Viro 提交于
... and don't bother in callers. Don't bother with zeroing i_blocks, while we are at it - it's already been zeroed. i_mode is not worth the effort; it has no common default value. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 01 1月, 2009 1 次提交
-
-
由 Nick Piggin 提交于
struct dentry is one of the most critical structures in the kernel. So it's sad to see it going neglected. With CONFIG_PROFILING turned on (which is probably the common case at least for distros and kernel developers), sizeof(struct dcache) == 208 here (64-bit). This gives 19 objects per slab. I packed d_mounted into a hole, and took another 4 bytes off the inline name length to take the padding out from the end of the structure. This shinks it to 200 bytes. I could have gone the other way and increased the length to 40, but I'm aiming for a magic number, read on... I then got rid of the d_cookie pointer. This shrinks it to 192 bytes. Rant: why was this ever a good idea? The cookie system should increase its hash size or use a tree or something if lookups are a problem. Also the "fast dcookie lookups" in oprofile should be moved into the dcookie code -- how can oprofile possibly care about the dcookie_mutex? It gets dropped after get_dcookie() returns so it can't be providing any sort of protection. At 192 bytes, 21 objects fit into a 4K page, saving about 3MB on my system with ~140 000 entries allocated. 192 is also a multiple of 64, so we get nice cacheline alignment on 64 and 32 byte line systems -- any given dentry will now require 3 cachelines to touch all fields wheras previously it would require 4. I know the inline name size was chosen quite carefully, however with the reduction in cacheline footprint, it should actually be just about as fast to do a name lookup for a 36 character name as it was before the patch (and faster for other sizes). The memory footprint savings for names which are <= 32 or > 36 bytes long should more than make up for the memory cost for 33-36 byte names. Performance is a feature... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 30 12月, 2008 5 次提交
-
-
由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This patch removes the unused return parameter in oprofile_begin_trace(). Also, oprofile_begin_trace() and oprofile_end_trace() are inline now. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
Make code more readable. No functional changes. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This patch removes add_us_sample() and simplifies add_sample(). Code is much more readable now. Signed-off-by: NRobert Richter <robert.richter@amd.com>
-
由 Robert Richter 提交于
This patch adds the inline function __oprofile_add_ext_sample() to cpu_buffer.c and thus reduces overhead when calling oprofile_add_sample(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
-