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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 07:41:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 07:41:01 -0700
commite0972916e8fe943f342b0dd1c9d43dbf5bc261c2 (patch)
tree690c436f1f9b839c4ba34d17ab3efa63b97a2dce /include/linux
parent1f889ec62c3f0d8913f3c32f9aff2a1e15099346 (diff)
parent5ac2b5c2721501a8f5c5e1cd4116cbc31ace6886 (diff)
downloadlinux-e0972916e8fe943f342b0dd1c9d43dbf5bc261c2.tar.gz
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "Features: - Add "uretprobes" - an optimization to uprobes, like kretprobes are an optimization to kprobes. "perf probe -x file sym%return" now works like kretprobes. By Oleg Nesterov. - Introduce per core aggregation in 'perf stat', from Stephane Eranian. - Add memory profiling via PEBS, from Stephane Eranian. - Event group view for 'annotate' in --stdio, --tui and --gtk, from Namhyung Kim. - Add support for AMD NB and L2I "uncore" counters, by Jacob Shin. - Add Ivy Bridge-EP uncore support, by Zheng Yan - IBM zEnterprise EC12 oprofile support patchlet from Robert Richter. - Add perf test entries for checking breakpoint overflow signal handler issues, from Jiri Olsa. - Add perf test entry for for checking number of EXIT events, from Namhyung Kim. - Add perf test entries for checking --cpu in record and stat, from Jiri Olsa. - Introduce perf stat --repeat forever, from Frederik Deweerdt. - Add --no-demangle to report/top, from Namhyung Kim. - PowerPC fixes plus a couple of cleanups/optimizations in uprobes and trace_uprobes, by Oleg Nesterov. Various fixes and refactorings: - Fix dependency of the python binding wrt libtraceevent, from Naohiro Aota. - Simplify some perf_evlist methods and to allow 'stat' to share code with 'record' and 'trace', by Arnaldo Carvalho de Melo. - Remove dead code in related to libtraceevent integration, from Namhyung Kim. - Revert "perf sched: Handle PERF_RECORD_EXIT events" to get 'perf sched lat' back working, by Arnaldo Carvalho de Melo - We don't use Newt anymore, just plain libslang, by Arnaldo Carvalho de Melo. - Kill a bunch of die() calls, from Namhyung Kim. - Fix build on non-glibc systems due to libio.h absence, from Cody P Schafer. - Remove some perf_session and tracing dead code, from David Ahern. - Honor parallel jobs, fix from Borislav Petkov - Introduce tools/lib/lk library, initially just removing duplication among tools/perf and tools/vm. from Borislav Petkov ... and many more I missed to list, see the shortlog and git log for more details." * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (136 commits) perf/x86/intel/P4: Robistify P4 PMU types perf/x86/amd: Fix AMD NB and L2I "uncore" support perf/x86/amd: Remove old-style NB counter support from perf_event_amd.c perf/x86: Check all MSRs before passing hw check perf/x86/amd: Add support for AMD NB and L2I "uncore" counters perf/x86/intel: Add Ivy Bridge-EP uncore support perf/x86/intel: Fix SNB-EP CBO and PCU uncore PMU filter management perf/x86: Avoid kfree() in CPU_{STARTING,DYING} uprobes/perf: Avoid perf_trace_buf_prepare/submit if ->perf_events is empty uprobes/tracing: Don't pass addr=ip to perf_trace_buf_submit() uprobes/tracing: Change create_trace_uprobe() to support uretprobes uprobes/tracing: Make seq_printf() code uretprobe-friendly uprobes/tracing: Make register_uprobe_event() paths uretprobe-friendly uprobes/tracing: Make uprobe_{trace,perf}_print() uretprobe-friendly uprobes/tracing: Introduce is_ret_probe() and uretprobe_dispatcher() uprobes/tracing: Introduce uprobe_{trace,perf}_print() helpers uprobes/tracing: Generalize struct uprobe_trace_entry_head uprobes/tracing: Kill the pointless local_save_flags/preempt_count calls uprobes/tracing: Kill the pointless seq_print_ip_sym() call uprobes/tracing: Kill the pointless task_pt_regs() calls ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/compiler.h6
-rw-r--r--include/linux/kprobes.h6
-rw-r--r--include/linux/perf_event.h24
-rw-r--r--include/linux/uprobes.h8
4 files changed, 22 insertions, 22 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 10b8f23fab0..92669cd182a 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -351,4 +351,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
*/
#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
+/* Ignore/forbid kprobes attach on very low level functions marked by this attribute: */
+#ifdef CONFIG_KPROBES
+# define __kprobes __attribute__((__section__(".kprobes.text")))
+#else
+# define __kprobes
+#endif
#endif /* __LINUX_COMPILER_H */
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 4b6ef4d33cc..ca1d27a0d6a 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -29,6 +29,7 @@
* <jkenisto@us.ibm.com> and Prasanna S Panchamukhi
* <prasanna@in.ibm.com> added function-return probes.
*/
+#include <linux/compiler.h> /* for __kprobes */
#include <linux/linkage.h>
#include <linux/list.h>
#include <linux/notifier.h>
@@ -49,16 +50,11 @@
#define KPROBE_REENTER 0x00000004
#define KPROBE_HIT_SSDONE 0x00000008
-/* Attach to insert probes on any functions which should be ignored*/
-#define __kprobes __attribute__((__section__(".kprobes.text")))
-
#else /* CONFIG_KPROBES */
typedef int kprobe_opcode_t;
struct arch_specific_insn {
int dummy;
};
-#define __kprobes
-
#endif /* CONFIG_KPROBES */
struct kprobe;
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 1d795df6f4c..e0373d26c24 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -21,7 +21,6 @@
*/
#ifdef CONFIG_PERF_EVENTS
-# include <linux/cgroup.h>
# include <asm/perf_event.h>
# include <asm/local64.h>
#endif
@@ -128,6 +127,7 @@ struct hw_perf_event {
int event_base_rdpmc;
int idx;
int last_cpu;
+ int flags;
struct hw_perf_event_extra extra_reg;
struct hw_perf_event_extra branch_reg;
@@ -299,22 +299,7 @@ struct swevent_hlist {
#define PERF_ATTACH_GROUP 0x02
#define PERF_ATTACH_TASK 0x04
-#ifdef CONFIG_CGROUP_PERF
-/*
- * perf_cgroup_info keeps track of time_enabled for a cgroup.
- * This is a per-cpu dynamically allocated data structure.
- */
-struct perf_cgroup_info {
- u64 time;
- u64 timestamp;
-};
-
-struct perf_cgroup {
- struct cgroup_subsys_state css;
- struct perf_cgroup_info *info; /* timing info, one per cpu */
-};
-#endif
-
+struct perf_cgroup;
struct ring_buffer;
/**
@@ -583,11 +568,13 @@ struct perf_sample_data {
u32 reserved;
} cpu_entry;
u64 period;
+ union perf_mem_data_src data_src;
struct perf_callchain_entry *callchain;
struct perf_raw_record *raw;
struct perf_branch_stack *br_stack;
struct perf_regs_user regs_user;
u64 stack_user_size;
+ u64 weight;
};
static inline void perf_sample_data_init(struct perf_sample_data *data,
@@ -601,6 +588,8 @@ static inline void perf_sample_data_init(struct perf_sample_data *data,
data->regs_user.abi = PERF_SAMPLE_REGS_ABI_NONE;
data->regs_user.regs = NULL;
data->stack_user_size = 0;
+ data->weight = 0;
+ data->data_src.val = 0;
}
extern void perf_output_sample(struct perf_output_handle *handle,
@@ -831,6 +820,7 @@ do { \
struct perf_pmu_events_attr {
struct device_attribute attr;
u64 id;
+ const char *event_str;
};
#define PMU_EVENT_ATTR(_name, _var, _id, _show) \
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 02b83db8e2c..06f28beed7c 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -38,6 +38,8 @@ struct inode;
#define UPROBE_HANDLER_REMOVE 1
#define UPROBE_HANDLER_MASK 1
+#define MAX_URETPROBE_DEPTH 64
+
enum uprobe_filter_ctx {
UPROBE_FILTER_REGISTER,
UPROBE_FILTER_UNREGISTER,
@@ -46,6 +48,9 @@ enum uprobe_filter_ctx {
struct uprobe_consumer {
int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
+ int (*ret_handler)(struct uprobe_consumer *self,
+ unsigned long func,
+ struct pt_regs *regs);
bool (*filter)(struct uprobe_consumer *self,
enum uprobe_filter_ctx ctx,
struct mm_struct *mm);
@@ -68,6 +73,8 @@ struct uprobe_task {
enum uprobe_task_state state;
struct arch_uprobe_task autask;
+ struct return_instance *return_instances;
+ unsigned int depth;
struct uprobe *active_uprobe;
unsigned long xol_vaddr;
@@ -100,6 +107,7 @@ struct uprobes_state {
extern int __weak set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
extern bool __weak is_swbp_insn(uprobe_opcode_t *insn);
+extern bool __weak is_trap_insn(uprobe_opcode_t *insn);
extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
extern int uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool);
extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);