- 23 Dec, 2008 13 commits
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Ingo Molnar authored
Impact: remove dead code nr_inherited was not maintained correctly (not decremented) - and also not used - remove it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: extend debug printouts Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Allow lowlevel ->enable() op to return an error if a counter can not be added. This can be used to handle counter constraints. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Change counter inheritance from a 'push' to a 'pull' model: instead of child tasks pushing their final counts to the parent, reuse the wait4 infrastructure to pull counters as child tasks are exit-processed, much like how cutime/cstime is collected. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: fix per task clock counter precision Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: rename field names Shorten them. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: clean up Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Enumerate fixed-mode PMCs based on CPUID, and feed that into the perfcounter code. Does not use fixed-mode PMCs yet. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: refactor the x86 code for fixed-mode PMCs Extend the data structures and rename the existing facilities to allow for a 'generic' versus 'fixed' counter distinction. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: rename include file We'll be providing an asm/perf_counter.h to the generic perfcounter code, so use the already existing x86 file for this purpose and rename it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: schedule in groups atomically If there are multiple groups in a task, make sure they are scheduled in and out atomically. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: remove debug checks Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 19 Dec, 2008 1 commit
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Jaswinder Singh authored
Impact: cleanup, avoid sparse warnings, reduce kernel size a bit Fixes these sparse warnings: arch/x86/kernel/cpu/perf_counter.c:44:11: warning: symbol 'intel_perfmon_event_map' was not declared. Should it be static? arch/x86/kernel/cpu/perf_counter.c:54:11: warning: symbol 'max_intel_perfmon_events' was not declared. Should it be static? Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 17 Dec, 2008 1 commit
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Ingo Molnar authored
Impact: implement default-off counters Make sure that counters that are created with counter.hw_event.disabled=1, get created in disabled state. They can be enabled via: prctl(PR_TASK_PERF_COUNTERS_ENABLE); Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 16 Dec, 2008 1 commit
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Ingo Molnar authored
Pavel Machek pointed out that performance counters should be flushed when crossing protection domains on setuid execution. Reported-by: Pavel Machek <pavel@suse.cz> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 14 Dec, 2008 12 commits
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Ingo Molnar authored
If counters are exiting via do_exit() not via filp close, then the CPU context needs to be released - otherwise future percpu counter creations might fail. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
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Ingo Molnar authored
Fix non-working NMI sampling in certain bootup scenarios. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Make perf_max_counters default to at least 1 - this allows the sw counters to be used. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Do not write MSR_CORE_PERF_GLOBAL_CTRL on CPUs where it does not exist. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: add new feature, new sw counter Add a counter that counts the number of pagefaults a task is experiencing. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: add new feature, new sw counter Add a counter that counts the number of cross-CPU migrations a task is suffering. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: add new feature, new sw counter Add a counter that counts the number of context-switches a task is doing. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: bugfix Update the task clock counter to the new math. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: implement new performance feature Counter inheritance can be used to run performance counters in a workload, transparently - and pipe back the counter results to the parent counter. Inheritance for performance counters works the following way: when creating a counter it can be marked with the .inherit=1 flag. Such counters are then 'inherited' by all child tasks (be they fork()-ed or clone()-ed). These counters get inherited through exec() boundaries as well (except through setuid boundaries). The counter values get added back to the parent counter(s) when the child task(s) exit - much like stime/utime statistics are gathered. So inherited counters are ideal to gather summary statistics about an application's behavior via shell commands, without having to modify that application. The timec.c command utilizes counter inheritance: http://redhat.com/~mingo/perfcounters/timec.c Sample output: $ ./timec -e 1 -e 3 -e 5 ls -lR /usr/include/ >/dev/null Performance counter stats for 'ls': 163516953 instructions 2295 cache-misses 2855182 branch-misses Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: restructure code Change counter math from absolute values to clear delta logic. We try to extract elapsed deltas from the raw hw counter - and put that into the generic counter. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Impact: new API Implement the atomic64_t APIs on 32-bit as well. Will be used by the performance counters code. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 13 Dec, 2008 6 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xxLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx: powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadia
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git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c-highlander: Trivial endian casting fixes i2c-pmcmsp: Fix endianness misannotation
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Commands needing to be retried require a complete re-initialization.
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: IP32: Update defconfig MIPS: Add missing calls to plat_unmap_dma_mem. MIPS: Kconfig: Fix the arch-specific header path MIPS: Use EI/DI for MIPS R2.
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Ingo Brueckl authored
For the console, there is a 1:1 mapping of glyphs which cannot be found in the current font. This seems to be meant as a kind of 'emergency fallback' for fonts without unicode mapping which otherwise would display nothing readable on the screen. At the moment it affects all chars for which no substitution character is defined. In particular this means that for all chars (>= 128) where there is no iso88591-1/unicode character (e.g. control character area) you'll get the very strange 1:1 mapping of the (cp437) graphics card glyphs. I'm pretty sure that the 1:1 mapping should only affect strict ASCII code characters, i.e. chars < 128. The patch limits the mapping as it probably was meant anyway. Signed-off-by: Ingo Brueckl <ib@wupperonline.de> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Egmont Koblinger <egmont@uhulinux.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ingo Brueckl authored
There is a major bug in the cp437 to unicode translation table. Char 0x7c is mapped to U+00a5 which is the Yen sign and wrong. The right mapping is U+00a6 (broken bar). Furthermore, a mapping for U+00b4 (a widely used character) is missing even though easily possible. The patch fixes these, as well as it provides a few other useful mappings. The changes are as follows: 0x0f (enhancement) enables a sort of currency symbol 0x27 (bug) enables a sort of acute accent which is a widely used character 0x44 (enhancement) enables a sort of icelandic capital letter eth 0x7c (major bug) corrects mapping 0xeb (enhancement) enables a sort of icelandic small letter eth 0xee (enhancement) enables a sort of math 'element of' Signed-off-by: Ingo Brueckl <ib@wupperonline.de> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 12 Dec, 2008 6 commits
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David Daney authored
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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David Daney authored
dma_free_noncoherent() and dma_free_coherent() are missing calls to plat_unmap_dma_mem(). This patch adds them. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Dmitri Vorobiev authored
The header path in the help text for the RUNTIME_DEBUG config option is obsolete and needs to be updated to match the new location of architecture-specific header files. While at it, fix the spelling mistake. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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David Daney authored
For MIPS R2, use the EI and DI instructions to enable and disable interrupts. Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Alan D. Brunelle authored
The test-unit-ready portion of this patch was causing boots to fail on my test machine (as in http://lkml.org/lkml/2008/12/5/161). With this patch in place, the system is booting reliably. Mike Anderson found the same problem in the hp_hw_start_stop code, and I applied the same solution in cdrom_read_cdda_bpc. Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com> Cc: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Ingo Molnar authored
( with manual semantic merge of arch/x86/kernel/cpu/perf_counter.c )
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