Description:
linux-kernel@vger.kernel.org (Moderated)
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perf/core: Small event scheduling changes
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Hi, This is an rfc patchset, only compile tested just to ensure I'm taking a good direction before going ahead. This is intended to rework a bit the perf event scheduling to guarantee a real priority of the pinned events over the volatile ones. This patchset handles such priority on task tick time only. But if the idea is agreed, I could expand that to every... more »
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16-bit operation of PATA_CS5536?
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I wonder why isn't the PATA CS5536 driver using 32-bit ops. Does the following make any sense? It seems to work on my IXP425-based router. Signed-off-by: Krzysztof Hałasa <k...@pm.waw.pl> --- a/drivers/ata/pata_cs5536.c +++ b/drivers/ata/pata_cs5536.c @@ -232,7 +232,7 @@ static struct scsi_host_template cs5536_sht = {... more »
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ext2 comment
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Hi, I just want to correct a mistake in comments, about ext2_find_entry.
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ata: Clean up hard coded array size calculation.
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Use ARRAY_SIZE macro of kernel api instead. Signed-off-by: Thiago Farina <tfrans...@gmail.com> --- drivers/ata/sata_mv.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 6f5093b..a8a7be0 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c... more »
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ata_sff_data_xfer* return value
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Hi, I wonder if this is entirely correct? If so, why? Only relevant parts left. * RETURNS: * Bytes consumed. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^ */ unsigned int ata_sff_data_xfer(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw) { unsigned int words = buflen >> 1;... more »
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IXP4xx repetitive 16-bit/32-bit I/O macros/inlines.
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Anybody using 32-bit PATA/SATA transfers on IXP4xx? :-) Long story, mostly with PCI in mind: - readb/readw/readl, writeb/writew/writel macros are value-preserving - __raw_* are order-preserving (i.e., strings are preserved) but the repetitive versions (outs[wl], ins[wl], ioread*_rep, iowrite*_rep) are supposed to preserve order as well (while lacking the... more »
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msync with MS_ASYNC on same page broken?
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Hi, I am writing a low latency application which (during the course of processing) writes objects into a file in binary mode. I am testing the persistence library right now which in single threaded mode can achieve about 2 micros per record (if say 100000 records 256 bytes each are written and i commit the entire page only once, i.e. one... more »
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drivers/media/video: correct initialization of audio_mode
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...This initialization of the value of audio_mode is the one used if nothing matches in the subsequent switch. The variable audio_mode is subsequently assigned to constants such as TUNER_AUDIO_MONO and TUNER_AUDIO_STEREO. TUNER_AUDIO_STEREO has the same value as V4L2_TUNER_MODE_STEREO, so it would seem better to use that value here.... more »
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perf tools: Fix permission checks
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The perf_event_open() system call returns EACCES if the user is not root which results in a very confusing error message: $ perf record -A -a -f Error: perfcounter syscall returned with -1 (Permission denied) Fatal: No CONFIG_PERF_EVENTS=y kernel support configured? It turns out that's because perf tools are checking only for EPERM. Fix that up... more »
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Use DMA_BIT_MASK(44) instead of deprecated DMA_44BIT_MASK
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Hi all, Use DMA_BIT_MASK(44) instead of deprecated DMA_44BIT_MASK Signed-off-by: Marin Mitov <mi...@issp.bas.bg> ============================== =========================== --- a/drivers/net/niu.c 2009-11-08 17:09:40.000000000 +0200 +++ b/drivers/net/niu.c 2009-11-08 17:10:31.000000000 +0200 @@ -45,10 +45,6 @@... more »
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