Oleg Nesterov f42d24a1d2 uprobes/perf: Teach trace_uprobe/perf code to use UPROBE_HANDLER_REMOVE ... Change uprobe_trace_func() and uprobe_perf_func() to return "int". Change uprobe_dispatcher() to return "trace_ret | perf_ret" although this is not needed, currently TP_FLAG_TRACE/TP_FLAG_PROFILE are mutually exclusive. The only functional change is that uprobe_perf_func() checks the filtering too and returns UPROBE_HANDLER_REMOVE if nobody wants to trace current. Testing: # perf probe -x /lib/libc.so.6 syscall # perf record -e probe_libc:syscall -i perl -e 'fork; syscall -1 for 1..10; wait' # perf report --show-total-period 100.00% 10 perl libc-2.8.so [.] syscall Before this patch: # cat /sys/kernel/debug/tracing/uprobe_profile /lib/libc.so.6 syscall 20 A child process doesn't have a counter, but still it hits this breakoint "copied" by dup_mmap(). After the patch: # cat /sys/kernel/debug/tracing/uprobe_profile /lib/libc.so.6 syscall 11 The child process hits this int3 only once and does unapply_uprobe(). Signed-off-by: Oleg Nesterov <oleg@redhat.com>		2013-02-08 18:28:07 +01:00
..
blktrace.c	tracing: Use this_cpu_ptr per-cpu helper	2013-01-21 13:22:30 -05:00
ftrace.c	tracing: Avoid unnecessary multiple recursion checks	2013-01-22 23:38:01 -05:00
Kconfig	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
Makefile	trace: Stop compiling in trace_clock unconditionally	2012-09-13 22:52:08 -04:00
power-traces.c
ring_buffer.c	ring-buffer: Add stats field for amount read from trace ring buffer	2013-01-30 11:01:53 -05:00
ring_buffer_benchmark.c
rpm-traces.c
trace.c	tracing: Init current_trace to nop_trace and remove NULL checks	2013-02-01 18:38:47 -05:00
trace.h	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
trace_branch.c	tracing: Cache comms only after an event occurred	2012-10-31 16:45:31 -04:00
trace_clock.c	tracing: Use sched_clock_cpu for trace_clock_global	2013-01-30 11:02:05 -05:00
trace_entries.h	Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent	2012-03-24 08:19:09 +01:00
trace_event_perf.c	perf/core improvements and fixes:	2012-08-21 11:27:00 +02:00
trace_events.c	tracing: Remove the extra 4 bytes of padding in events	2013-01-21 21:05:41 -05:00
trace_events_filter.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_events_filter_test.h
trace_export.c	tracing: Do not enable function event with enable	2012-05-10 15:55:43 -04:00
trace_functions.c	tracing: Fix unsigned int compare of zero in recursion check	2013-01-24 07:52:34 -05:00
trace_functions_graph.c	tracing/fgraph: Adjust fgraph depth before calling trace return callback	2013-01-29 17:30:31 -05:00
trace_irqsoff.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_kdb.c
trace_kprobe.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_mmiotrace.c
trace_nop.c
trace_output.c	tracing: Format non-nanosec times from tsc clock without a decimal point.	2012-11-13 15:48:40 -05:00
trace_output.h
trace_printk.c	tracing: Add percpu buffers for trace_printk()	2012-04-23 21:15:55 -04:00
trace_probe.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_probe.h	uprobes/tracing: Introduce is_trace_uprobe_enabled()	2013-02-08 18:24:30 +01:00
trace_sched_switch.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_sched_wakeup.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_selftest.c	ftrace: Fix function tracing recursion self test	2013-01-22 23:37:58 -05:00
trace_selftest_dynamic.c
trace_stack.c	tracing: Remove unneeded checks from the stack tracer	2012-11-19 15:07:13 -05:00
trace_stat.c
trace_stat.h
trace_syscalls.c	tracing/syscalls: Make local functions static	2013-01-21 13:22:31 -05:00
trace_uprobe.c	uprobes/perf: Teach trace_uprobe/perf code to use UPROBE_HANDLER_REMOVE	2013-02-08 18:28:07 +01:00