Tony Luck 58d4e21e50 tracing: Fix wraparound problems in "uptime" trace clock ... The "uptime" trace clock added in: commit 8aacf017b0 tracing: Add "uptime" trace clock that uses jiffies has wraparound problems when the system has been up more than 1 hour 11 minutes and 34 seconds. It converts jiffies to nanoseconds using: (u64)jiffies_to_usecs(jiffy) * 1000ULL but since jiffies_to_usecs() only returns a 32-bit value, it truncates at 2^32 microseconds. An additional problem on 32-bit systems is that the argument is "unsigned long", so fixing the return value only helps until 2^32 jiffies (49.7 days on a HZ=1000 system). Avoid these problems by using jiffies_64 as our basis, and not converting to nanoseconds (we do convert to clock_t because user facing API must not be dependent on internal kernel HZ values). Link: http://lkml.kernel.org/p/99d63c5bfe9b320a3b428d773825a37095bf6a51.1405708254.git.tony.luck@intel.com Cc: stable@vger.kernel.org # 3.10+ Fixes: 8aacf017b0 "tracing: Add "uptime" trace clock that uses jiffies" Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2014-07-21 09:56:12 -04:00
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blktrace.c
ftrace.c	tracing: Fix graph tracer with stack tracer on other archs	2014-07-15 11:10:25 -04:00
Kconfig
Makefile
power-traces.c
ring_buffer_benchmark.c
ring_buffer.c	ring-buffer: Fix polling on trace_pipe	2014-07-15 17:07:47 -04:00
rpm-traces.c
trace_benchmark.c	tracing: Only calculate stats of tracepoint benchmarks for 2^32 times	2014-06-06 00:41:38 -04:00
trace_benchmark.h
trace_branch.c
trace_clock.c	tracing: Fix wraparound problems in "uptime" trace clock	2014-07-21 09:56:12 -04:00
trace_entries.h
trace_event_perf.c
trace_events_filter_test.h
trace_events_filter.c
trace_events_trigger.c
trace_events.c	tracing: instance_rmdir() leaks ftrace_event_file->filter	2014-07-14 14:41:13 -04:00
trace_export.c
trace_functions_graph.c
trace_functions.c
trace_irqsoff.c
trace_kdb.c
trace_kprobe.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-06-12 19:18:49 -07:00
trace_mmiotrace.c
trace_nop.c
trace_output.c
trace_output.h
trace_printk.c
trace_probe.c
trace_probe.h
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest_dynamic.c
trace_selftest.c
trace_stack.c
trace_stat.c
trace_stat.h
trace_syscalls.c
trace_uprobe.c	tracing/uprobes: Fix the usage of uprobe_buffer_enable() in probe_event_enable()	2014-06-30 13:22:33 -04:00
trace.c	tracing: Fix wraparound problems in "uptime" trace clock	2014-07-21 09:56:12 -04:00
trace.h	tracing: Fix check of ftrace_trace_arrays list_empty() check	2014-06-10 13:53:50 -04:00