perf-inject(1) ============== NAME ---- perf-inject - Filter to augment the events stream with additional information SYNOPSIS -------- [verse] 'perf inject ' DESCRIPTION ----------- perf-inject reads a perf-record event stream and repipes it to stdout. At any point the processing code can inject other events into the event stream - in this case build-ids (-b option) are read and injected as needed into the event stream. Build-ids are just the first user of perf-inject - potentially anything that needs userspace processing to augment the events stream with additional information could make use of this facility. OPTIONS ------- -b:: --build-ids=:: Inject build-ids into the output stream -v:: --verbose:: Be more verbose. -i:: --input=:: Input file name. (default: stdin) -o:: --output=:: Output file name. (default: stdout) -s:: --sched-stat:: Merge sched_stat and sched_switch for getting events where and how long tasks slept. sched_switch contains a callchain where a task slept and sched_stat contains a timeslice how long a task slept. --kallsyms=:: kallsyms pathname --itrace:: Decode Instruction Tracing data, replacing it with synthesized events. Options are: include::itrace.txt[] --strip:: Use with --itrace to strip out non-synthesized events. -j:: --jit:: Process jitdump files by injecting the mmap records corresponding to jitted functions. This option also generates the ELF images for each jitted function found in the jitdumps files captured in the input perf.data file. Use this option if you are monitoring environment using JIT runtimes, such as Java, DART or V8. SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-archive[1] href='/cgit.cgi/linux/net-next.git/log/drivers?h=nds-private-remove'>logtreecommitdiff
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authorMarc Kleine-Budde <mkl@pengutronix.de>2014-09-23 15:28:21 +0200
committerMarc Kleine-Budde <mkl@pengutronix.de>2017-02-06 15:13:24 +0100
commit3abbac0b5dd3e3b3dfb30a4885cdde5c20e1cb83 (patch)
tree8517ce1aabaa92c0d810797a66fb97f3177e6085 /drivers
parentd254586c34538c0014280806c5d4795697cf21e5 (diff)
can: rx-offload: Add support for timestamp based irq offloading
Some CAN controllers don't implement a FIFO in hardware, but fill their mailboxes in a particular order (from lowest to highest or highest to lowest). This makes problems to read the frames in the correct order from the hardware, as new frames might be filled into just read (low) mailboxes. This gets worse, when following new frames are received into not read (higher) mailboxes. On the bright side some these CAN controllers put a timestamp on each received CAN frame. This patch adds support to offload CAN frames in interrupt context, order them by timestamp and then transmitted in a NAPI context. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers')