| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20100709044735.GB26884@linux.vnet.ibm.com>
Date: Fri, 9 Jul 2010 10:17:35 +0530
From: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>
Cc: Steven Rostedt <rostedt@...dmis.org>,
Randy Dunlap <rdunlap@...otime.net>,
Arnaldo Carvalho de Melo <acme@...radead.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Christoph Hellwig <hch@...radead.org>,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
Oleg Nesterov <oleg@...hat.com>,
Mark Wielaard <mjw@...hat.com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Naren A Devaiah <naren.devaiah@...ibm.com>,
Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@...il.com>,
"Frank Ch. Eigler" <fche@...hat.com>,
Ananth N Mavinakayanahalli <ananth@...ibm.com>,
LKML <linux-kernel@...r.kernel.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCHv8 2.6.35-rc4-tip 11/12] perf: perf interface for
uprobes
perf: perf interface for uprobes
Changelog:
Fixed a compilation issue reported by Christoph Hellwig.
Changelog from v6: Changelog from v6: Fixed a bug reported by Masami.
i.e Throw an error message and exit if perf probe is for a dwarf
based probes.
Changelog from v4: Merged to 2.6.35-rc3-tip.
Changelog from v3: (addressed comments from Masami Hiramatsu)
* Every process id has a different group name.
* event name starts with function name.
* If vaddr is specified, event name has vaddr appended
along with function name, (this is to avoid subsequent probes
using same event name.)
* warning if -p and --list options are used together.
Also dso can either be a short name or absolute path.
Enhances perf probe to accept pid and user vaddr.
Provides very basic support for uprobes.
TODO:
Update perf-probes.txt.
Global tracing.
Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
---
Here is a terminal snapshot of placing, using and removing a probe on a
process with pid 3591 (corresponding to zsh)
[ Probing a function in the executable using function name ]
-------------------------------------------------------------
[root@...D]# perf probe -p 3591 zfree@zsh
Added new event:
probe_3591:zfree (on 0x446420)
You can now use it on all perf tools, such as:
perf record -e probe_3591:zfree -a sleep 1
[root@...D]# perf probe --list
probe_3591:zfree (on 3591:0x0000000000446420)
[root@...D]# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_3591/zfree 3591:0x0000000000446420
[root@...D]# perf record -f -e probe_3591:zfree -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.039 MB perf.data (~1716 samples) ]
[root@...D]# perf probe -p 3591 --del probe_3591:zfree
Remove event: probe_3591:zfree
[root@...D]# perf report
# Samples: 447
#
# Overhead Command Shared Object Symbol
# ........ ............... ............. ......
#
100.00% zsh zsh [.] zfree
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[ Probing a function + offset ]
-------------------------------
[root@...D]# perf probe -p 3591 zfree@...+5
Added new event:
probe_3591:zfree (on 0x446425)
You can now use it on all perf tools, such as:
perf record -e probe_3591:zfree -a sleep 1
[root@...D]# perf probe --list
probe_3591:zfree (on 3591:0x0000000000446425)
[root@...D]# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_3591/zfree 3591:0x0000000000446425
[root@...D]# perf record -f -e probe_3591:zfree -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.036 MB perf.data (~1590 samples) ]
[root@...D]# perf probe -p 3591 --del probe_3591:zfree
Remove event: probe_3591:zfree
[root@...D]# perf report
# Samples: 18
#
# Overhead Command Shared Object Symbol
# ........ ............... ............. ......
#
100.00% zsh zsh [.] zfree
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[ Probing a library function using function name ]
--------------------------------------------------
[root@...D]# perf probe -p 3591 write@...c-2.5.so
Added new event:
probe_3591:write (on 0x36010c6060)
You can now use it on all perf tools, such as:
perf record -e probe_3591:write -a sleep 1
[root@...D]# perf probe --list
probe_3591:write (on 3591:0x00000036010c6060)
[root@...D]# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_3591/write 3591:0x00000036010c6060
[root@...D]# perf record -f -e probe_3591:write -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.040 MB perf.data (~1738 samples) ]
[root@...D]# perf probe -p 3591 --del probe_3591:write
Remove event: probe_3591:write
[root@...D]# perf report
# Samples: 11
#
# Overhead Command Shared Object Symbol
# ........ ............... .................. ......
#
100.00% zsh libc-2.5.so [.] __GI___libc_write
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[ Probing a library function using function name and absolute path ]
---------------------------------------------------------------------
[root@...D]# perf probe -p 3591 write@...b64/libc-2.5.so
Added new event:
probe_3591:write (on 0x36010c6060)
You can now use it on all perf tools, such as:
perf record -e probe_3591:write -a sleep 1
[root@...D]# perf probe --list
probe_3591:write (on 3591:0x00000036010c6060)
[root@...D]# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_3591/write 3591:0x00000036010c6060
[root@...D]# perf record -f -e probe_3591:write -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.040 MB perf.data (~1738 samples) ]
[root@...D]# perf probe -p 3591 --del probe_3591:write
Remove event: probe_3591:write
[root@...D]# perf report
# Samples: 11
#
# Overhead Command Shared Object Symbol
# ........ ............... .................. ......
#
100.00% zsh libc-2.5.so [.] __GI___libc_write
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[ Probing using vaddr 0x0000000000446420 (corresponding to zfree)]
-------------------------------------------------------------------
[root@...D]# perf probe -p 3591 0x0000000000446420
Added new event:
probe_3591:zfree_446420 (on 0x0000000000446420)
You can now use it on all perf tools, such as:
perf record -e probe_3591:zfree_446420 -a sleep 1
[root@...D]# perf record -e probe_3591:zfree_446420 -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.041 MB perf.data (~1797 samples) ]
[root@...D]# perf report
#
# Samples: 628
#
# Overhead Command Shared Object Symbol
# ........ ............... ............. ......
#
100.00% zsh zsh [.] zfree
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@...D]# perf report --sort comm,dso
# Samples: 628
#
# Overhead Command Shared Object
# ........ ............... .............
#
100.00% zsh zsh
[root@...D]# perf probe --list
probe_3591:zfree_446420 (on 3591:0x0000000000446420)
[root@...D]# perf list | grep probe
probe_3591:zfree_446420 [Tracepoint event]
[root@...D]# perf probe -p 3591 --del probe_3591:zfree_446420
Remove event: probe_3591:zfree_446420
[root@...D]#
Another example for a shared library: write stub in libc. (corresponds to
0x00000036010c6060)
on a vaddr
[ Probing a libc vaddr 0x00000036010c6060 (corresponding to write) ]
[root@...D]# perf probe -p 3591 0x00000036010c6060
dded new event:
probe_3591:__GI___libc_write_36010c6060 (on 0x00000036010c6060)
You can now use it on all perf tools, such as:
perf record -e probe_3591:__GI___libc_write_36010c6060 -a sleep 1
[root@...D]# perf record -f -e probe_3591:__GI___libc_write_36010c6060 -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.040 MB perf.data (~1748 samples) ]
[root@...D]# perf report
# Samples: 24
#
# Overhead Command Shared Object Symbol
# ........ ............... .................. ......
#
100.00% zsh libc-2.5.so [.] __GI___libc_write
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@...D]#
[ Probing using a function without specifying a dso (corresponding to zfree)]
-------------------------------------------------------------------
[root@...D]# perf probe -p 3591 zfree
Added new event:
probe_3591:zfree (on 0x0000000000446420)
You can now use it on all perf tools, such as:
perf record -e probe_3591:zfree -a sleep 1
[root@...D]# perf record -e probe_3591:zfree -a sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.041 MB perf.data (~1797 samples) ]
[root@...D]# perf report
#
# Samples: 628
#
# Overhead Command Shared Object Symbol
# ........ ............... ............. ......
#
100.00% zsh zsh [.] zfree
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@...D]#
tools/perf/builtin-probe.c | 13 +
tools/perf/builtin-top.c | 20 --
tools/perf/util/event.c | 20 ++
tools/perf/util/event.h | 1
tools/perf/util/probe-event.c | 520 +++++++++++++++++++++++++++++-----------
tools/perf/util/probe-event.h | 37 +--
tools/perf/util/probe-finder.c | 34 +--
tools/perf/util/probe-finder.h | 10 -
8 files changed, 445 insertions(+), 210 deletions(-)
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 5455186..cb915a5 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -55,6 +55,7 @@ static struct {
struct strlist *dellist;
struct line_range line_range;
int max_probe_points;
+ pid_t upid;
} params;
@@ -73,6 +74,7 @@ static int parse_probe_event(const char *str)
/* Parse a perf-probe command into event */
ret = parse_perf_probe_command(str, pev);
pr_debug("%d arguments\n", pev->nargs);
+ pev->upid = params.upid;
return ret;
}
@@ -188,6 +190,8 @@ static const struct option options[] = {
OPT__DRY_RUN(&probe_event_dry_run),
OPT_INTEGER('\0', "max-probes", ¶ms.max_probe_points,
"Set how many probe points can be found for a probe."),
+ OPT_INTEGER('p', "pid", ¶ms.upid,
+ "specify a pid for a uprobes based probe"),
OPT_END()
};
@@ -225,6 +229,10 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
pr_err(" Error: Don't use --list with --line.\n");
usage_with_options(probe_usage, options);
}
+ if (params.upid) {
+ pr_warning(" Error: Don't use --list with --pid.\n");
+ usage_with_options(probe_usage, options);
+ }
ret = show_perf_probe_events();
if (ret < 0)
pr_err(" Error: Failed to show event list. (%d)\n",
@@ -233,7 +241,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
}
#ifdef DWARF_SUPPORT
- if (params.show_lines) {
+ if (params.show_lines && !params.upid) {
if (params.nevents != 0 || params.dellist) {
pr_warning(" Error: Don't use --line with"
" --add/--del.\n");
@@ -248,7 +256,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
#endif
if (params.dellist) {
- ret = del_perf_probe_events(params.dellist);
+ ret = del_perf_probe_events(params.dellist, params.upid);
strlist__delete(params.dellist);
if (ret < 0) {
pr_err(" Error: Failed to delete events. (%d)\n", ret);
@@ -267,4 +275,3 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
}
return 0;
}
-
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 1e8e92e..b513e40 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1082,26 +1082,6 @@ static void event__process_sample(const event_t *self,
}
}
-static int event__process(event_t *event, struct perf_session *session)
-{
- switch (event->header.type) {
- case PERF_RECORD_COMM:
- event__process_comm(event, session);
- break;
- case PERF_RECORD_MMAP:
- event__process_mmap(event, session);
- break;
- case PERF_RECORD_FORK:
- case PERF_RECORD_EXIT:
- event__process_task(event, session);
- break;
- default:
- break;
- }
-
- return 0;
-}
-
struct mmap_data {
int counter;
void *base;
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index d7f21d7..d93e0bb 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -552,6 +552,26 @@ int event__process_task(event_t *self, struct perf_session *session)
return 0;
}
+int event__process(event_t *event, struct perf_session *session)
+{
+ switch (event->header.type) {
+ case PERF_RECORD_COMM:
+ event__process_comm(event, session);
+ break;
+ case PERF_RECORD_MMAP:
+ event__process_mmap(event, session);
+ break;
+ case PERF_RECORD_FORK:
+ case PERF_RECORD_EXIT:
+ event__process_task(event, session);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
void thread__find_addr_map(struct thread *self,
struct perf_session *session, u8 cpumode,
enum map_type type, pid_t pid, u64 addr,
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 887ee63..8e790da 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -154,6 +154,7 @@ int event__process_comm(event_t *self, struct perf_session *session);
int event__process_lost(event_t *self, struct perf_session *session);
int event__process_mmap(event_t *self, struct perf_session *session);
int event__process_task(event_t *self, struct perf_session *session);
+int event__process(event_t *event, struct perf_session *session);
struct addr_location;
int event__preprocess_sample(const event_t *self, struct perf_session *session,
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 09cf546..ef7c2d5 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1,5 +1,5 @@
/*
- * probe-event.c : perf-probe definition to kprobe_events format converter
+ * probe-event.c : perf-probe definition to probe_events format converter
*
* Written by Masami Hiramatsu <mhiramat@...hat.com>
*
@@ -46,6 +46,7 @@
#include "trace-event.h" /* For __unused */
#include "probe-event.h"
#include "probe-finder.h"
+#include "session.h"
#define MAX_CMDLEN 256
#define MAX_PROBE_ARGS 128
@@ -72,6 +73,7 @@ static int e_snprintf(char *str, size_t size, const char *format, ...)
}
static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
+static int convert_name_to_addr(struct perf_probe_event *pev);
static struct machine machine;
/* Initialize symbol maps and path of vmlinux */
@@ -109,6 +111,18 @@ out:
return ret;
}
+static int convert_to_perf_probe_point(struct probe_trace_point *tp,
+ struct perf_probe_point *pp)
+{
+ pp->function = strdup(tp->symbol);
+ if (pp->function == NULL)
+ return -ENOMEM;
+ pp->offset = tp->offset;
+ pp->retprobe = tp->retprobe;
+
+ return 0;
+}
+
#ifdef DWARF_SUPPORT
static int open_vmlinux(void)
{
@@ -120,8 +134,12 @@ static int open_vmlinux(void)
return open(machine.vmlinux_maps[MAP__FUNCTION]->dso->long_name, O_RDONLY);
}
-/* Convert trace point to probe point with debuginfo */
-static int convert_to_perf_probe_point(struct kprobe_trace_point *tp,
+/*
+ * Convert trace point to probe point with debuginfo
+ * Currently only handles kprobes.
+ */
+
+static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
struct perf_probe_point *pp)
{
struct symbol *sym;
@@ -151,13 +169,21 @@ static int convert_to_perf_probe_point(struct kprobe_trace_point *tp,
}
/* Try to find perf_probe_event with debuginfo */
-static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev,
- struct kprobe_trace_event **tevs,
+static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
+ struct probe_trace_event **tevs,
int max_tevs)
{
bool need_dwarf = perf_probe_event_need_dwarf(pev);
int fd, ntevs;
+ if (pev->upid) {
+ if (need_dwarf) {
+ pr_warning("Debuginfo-analysis is not supported.\n");
+ return -ENOSYS;
+ }
+ return convert_name_to_addr(pev);
+ }
+
fd = open_vmlinux();
if (fd < 0) {
if (need_dwarf) {
@@ -169,11 +195,11 @@ static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev,
}
/* Searching trace events corresponding to probe event */
- ntevs = find_kprobe_trace_events(fd, pev, tevs, max_tevs);
+ ntevs = find_probe_trace_events(fd, pev, tevs, max_tevs);
close(fd);
if (ntevs > 0) { /* Succeeded to find trace events */
- pr_debug("find %d kprobe_trace_events.\n", ntevs);
+ pr_debug("find %d probe_trace_events.\n", ntevs);
return ntevs;
}
@@ -308,26 +334,23 @@ end:
#else /* !DWARF_SUPPORT */
-static int convert_to_perf_probe_point(struct kprobe_trace_point *tp,
- struct perf_probe_point *pp)
+static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
+ struct perf_probe_point *pp)
{
- pp->function = strdup(tp->symbol);
- if (pp->function == NULL)
- return -ENOMEM;
- pp->offset = tp->offset;
- pp->retprobe = tp->retprobe;
-
- return 0;
+ return convert_to_perf_probe_point(tp, pp);
}
-static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev,
- struct kprobe_trace_event **tevs __unused,
+static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
+ struct probe_trace_event **tevs __unused,
int max_tevs __unused)
{
if (perf_probe_event_need_dwarf(pev)) {
pr_warning("Debuginfo-analysis is not supported.\n");
return -ENOSYS;
}
+ if (pev->upid)
+ return convert_name_to_addr(pev);
+
return 0;
}
@@ -403,6 +426,115 @@ static bool check_event_name(const char *name)
return true;
}
+/*
+ * uprobe_events only accepts address:
+ * Convert function and any offset to address
+ */
+static int convert_name_to_addr(struct perf_probe_event *pev)
+{
+ struct perf_probe_point *pp = &pev->point;
+ struct perf_session *session;
+ struct thread *thread;
+ struct symbol *sym;
+ struct map *map;
+ char *name;
+ int ret = -EINVAL;
+ unsigned long long vaddr;
+
+ /* check if user has specifed a virtual address */
+ vaddr = strtoul(pp->function, NULL, 0);
+ session = perf_session__new(NULL, O_WRONLY, false, false);
+ if (!session) {
+ pr_warning("Cannot initialize perf session.\n");
+ return -ENOMEM;
+ }
+
+ symbol_conf.try_vmlinux_path = false;
+ if (!vaddr)
+ symbol_conf.sort_by_name = true;
+ if (symbol__init() < 0) {
+ pr_warning("Cannot initialize symbols.\n");
+ goto free_session;
+ }
+
+ event__synthesize_thread(pev->upid, event__process, session);
+ thread = perf_session__findnew(session, pev->upid);
+ if (!thread) {
+ pr_warning("Cannot initialize perf session.\n");
+ goto free_session;
+ }
+
+ if (vaddr) {
+ if (pev->event) {
+ ret = 0;
+ goto free_session;
+ }
+
+ pev->event = zalloc(sizeof(char *) * MAX_PROBE_ARGS);
+ if (!pev->event) {
+ ret = -ENOMEM;
+ pr_warning("Cannot allocate memory for event.\n");
+ goto free_session;
+ }
+
+ sym = map_groups__find_symbol(&thread->mg, MAP__FUNCTION,
+ vaddr, NULL, NULL);
+ if (!sym)
+ snprintf(pev->event, MAX_PROBE_ARGS, "p_%llx", vaddr);
+ else
+ snprintf(pev->event, MAX_PROBE_ARGS, "%s_%llx",
+ sym->name, vaddr);
+ ret = 0;
+ goto free_session;
+ }
+
+ if (!pp->file)
+ /* Lets find the function in the executable. */
+ name = thread->comm;
+ else
+ name = basename(make_absolute_path(pp->file));
+
+ if (!name) {
+ pr_debug("Please check DSO and retry\n");
+ goto free_session;
+ }
+
+ map = map_groups__find_by_name(&thread->mg, MAP__FUNCTION, name);
+ if (!map) {
+ pr_warning("Cannot find appropriate DSO.\n");
+ goto free_session;
+ }
+
+ sym = map__find_symbol_by_name(map, pp->function, NULL);
+ if (!sym) {
+ pr_warning("Cannot find appropriate DSO.\n");
+ goto free_session;
+ }
+
+ if (map->start > sym->start)
+ vaddr = map->start;
+ vaddr += sym->start + pp->offset + map->pgoff;
+ pp->offset = 0;
+
+ if (!pev->event)
+ pev->event = pp->function;
+ else
+ free(pp->function);
+ pp->function = zalloc(sizeof(char *) * MAX_PROBE_ARGS);
+ if (!pp->function) {
+ ret = -ENOMEM;
+ pr_warning("Failed to allocate memory by zalloc.\n");
+ goto free_session;
+ }
+ e_snprintf(pp->function, MAX_PROBE_ARGS, "0x%llx", vaddr);
+ ret = 0;
+
+free_session:
+ if (session)
+ perf_session__delete(session);
+ return ret;
+}
+
/* Parse probepoint definition. */
static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev)
{
@@ -542,6 +674,11 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev)
return -EINVAL;
}
+ if (pev->upid && !pp->function) {
+ semantic_error("No function specified for uprobes");
+ return -EINVAL;
+ }
+
if ((pp->offset || pp->line || pp->lazy_line) && pp->retprobe) {
semantic_error("Offset/Line/Lazy pattern can't be used with "
"return probe.");
@@ -551,6 +688,14 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev)
pr_debug("symbol:%s file:%s line:%d offset:%lu return:%d lazy:%s\n",
pp->function, pp->file, pp->line, pp->offset, pp->retprobe,
pp->lazy_line);
+
+ if (pev->upid && perf_probe_event_need_dwarf(pev)) {
+ semantic_error("no dwarf based probes for uprobes.");
+ return -EINVAL;
+ }
+
+ if (pev->upid)
+ return convert_name_to_addr(pev);
return 0;
}
@@ -702,7 +847,8 @@ bool perf_probe_event_need_dwarf(struct perf_probe_event *pev)
{
int i;
- if (pev->point.file || pev->point.line || pev->point.lazy_line)
+ if ((pev->point.file && !pev->upid) || pev->point.line ||
+ pev->point.lazy_line)
return true;
for (i = 0; i < pev->nargs; i++)
@@ -712,16 +858,17 @@ bool perf_probe_event_need_dwarf(struct perf_probe_event *pev)
return false;
}
-/* Parse kprobe_events event into struct probe_point */
-int parse_kprobe_trace_command(const char *cmd, struct kprobe_trace_event *tev)
+/* Parse probe_events (uprobe_events) event into struct probe_point */
+static int parse_probe_trace_command(const char *cmd,
+ struct probe_trace_event *tev)
{
- struct kprobe_trace_point *tp = &tev->point;
+ struct probe_trace_point *tp = &tev->point;
char pr;
char *p;
int ret, i, argc;
char **argv;
- pr_debug("Parsing kprobe_events: %s\n", cmd);
+ pr_debug("Parsing probe_events: %s\n", cmd);
argv = argv_split(cmd, &argc);
if (!argv) {
pr_debug("Failed to split arguments.\n");
@@ -753,7 +900,7 @@ int parse_kprobe_trace_command(const char *cmd, struct kprobe_trace_event *tev)
tp->offset = 0;
tev->nargs = argc - 2;
- tev->args = zalloc(sizeof(struct kprobe_trace_arg) * tev->nargs);
+ tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs);
if (tev->args == NULL) {
ret = -ENOMEM;
goto out;
@@ -899,13 +1046,13 @@ char *synthesize_perf_probe_command(struct perf_probe_event *pev)
}
#endif
-static int __synthesize_kprobe_trace_arg_ref(struct kprobe_trace_arg_ref *ref,
+static int __synthesize_probe_trace_arg_ref(struct probe_trace_arg_ref *ref,
char **buf, size_t *buflen,
int depth)
{
int ret;
if (ref->next) {
- depth = __synthesize_kprobe_trace_arg_ref(ref->next, buf,
+ depth = __synthesize_probe_trace_arg_ref(ref->next, buf,
buflen, depth + 1);
if (depth < 0)
goto out;
@@ -923,10 +1070,10 @@ out:
}
-static int synthesize_kprobe_trace_arg(struct kprobe_trace_arg *arg,
+static int synthesize_probe_trace_arg(struct probe_trace_arg *arg,
char *buf, size_t buflen)
{
- struct kprobe_trace_arg_ref *ref = arg->ref;
+ struct probe_trace_arg_ref *ref = arg->ref;
int ret, depth = 0;
char *tmp = buf;
@@ -946,7 +1093,7 @@ static int synthesize_kprobe_trace_arg(struct kprobe_trace_arg *arg,
/* Dereferencing arguments */
if (ref) {
- depth = __synthesize_kprobe_trace_arg_ref(ref, &buf,
+ depth = __synthesize_probe_trace_arg_ref(ref, &buf,
&buflen, 1);
if (depth < 0)
return depth;
@@ -982,9 +1129,9 @@ static int synthesize_kprobe_trace_arg(struct kprobe_trace_arg *arg,
return buf - tmp;
}
-char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev)
+char *synthesize_probe_trace_command(struct probe_trace_event *tev)
{
- struct kprobe_trace_point *tp = &tev->point;
+ struct probe_trace_point *tp = &tev->point;
char *buf;
int i, len, ret;
@@ -992,15 +1139,27 @@ char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev)
if (buf == NULL)
return NULL;
- len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s+%lu",
- tp->retprobe ? 'r' : 'p',
- tev->group, tev->event,
- tp->symbol, tp->offset);
+ if (tev->upid)
+ len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %d:%s\n",
+ tp->retprobe ? 'r' : 'p',
+ tev->group, tev->event,
+ tev->upid, tp->symbol);
+ else if (tp->offset)
+ len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s+%lu",
+ tp->retprobe ? 'r' : 'p',
+ tev->group, tev->event,
+ tp->symbol, tp->offset);
+ else
+ len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s",
+ tp->retprobe ? 'r' : 'p',
+ tev->group, tev->event,
+ tp->symbol);
+
if (len <= 0)
goto error;
for (i = 0; i < tev->nargs; i++) {
- ret = synthesize_kprobe_trace_arg(&tev->args[i], buf + len,
+ ret = synthesize_probe_trace_arg(&tev->args[i], buf + len,
MAX_CMDLEN - len);
if (ret <= 0)
goto error;
@@ -1013,8 +1172,8 @@ error:
return NULL;
}
-int convert_to_perf_probe_event(struct kprobe_trace_event *tev,
- struct perf_probe_event *pev)
+static int convert_to_perf_probe_event(struct probe_trace_event *tev,
+ struct perf_probe_event *pev, bool is_kprobe)
{
char buf[64] = "";
int i, ret;
@@ -1026,7 +1185,11 @@ int convert_to_perf_probe_event(struct kprobe_trace_event *tev,
return -ENOMEM;
/* Convert trace_point to probe_point */
- ret = convert_to_perf_probe_point(&tev->point, &pev->point);
+ if (is_kprobe)
+ ret = kprobe_convert_to_perf_probe(&tev->point, &pev->point);
+ else
+ ret = convert_to_perf_probe_point(&tev->point, &pev->point);
+
if (ret < 0)
return ret;
@@ -1039,7 +1202,7 @@ int convert_to_perf_probe_event(struct kprobe_trace_event *tev,
if (tev->args[i].name)
pev->args[i].name = strdup(tev->args[i].name);
else {
- ret = synthesize_kprobe_trace_arg(&tev->args[i],
+ ret = synthesize_probe_trace_arg(&tev->args[i],
buf, 64);
pev->args[i].name = strdup(buf);
}
@@ -1090,9 +1253,9 @@ void clear_perf_probe_event(struct perf_probe_event *pev)
memset(pev, 0, sizeof(*pev));
}
-void clear_kprobe_trace_event(struct kprobe_trace_event *tev)
+static void clear_probe_trace_event(struct probe_trace_event *tev)
{
- struct kprobe_trace_arg_ref *ref, *next;
+ struct probe_trace_arg_ref *ref, *next;
int i;
if (tev->event)
@@ -1120,7 +1283,7 @@ void clear_kprobe_trace_event(struct kprobe_trace_event *tev)
memset(tev, 0, sizeof(*tev));
}
-static int open_kprobe_events(bool readwrite)
+static int open_probe_events(bool readwrite, bool is_kprobe)
{
char buf[PATH_MAX];
const char *__debugfs;
@@ -1131,8 +1294,13 @@ static int open_kprobe_events(bool readwrite)
pr_warning("Debugfs is not mounted.\n");
return -ENOENT;
}
+ if (is_kprobe)
+ ret = e_snprintf(buf, PATH_MAX, "%stracing/kprobe_events",
+ __debugfs);
+ else
+ ret = e_snprintf(buf, PATH_MAX, "%stracing/uprobe_events",
+ __debugfs);
- ret = e_snprintf(buf, PATH_MAX, "%stracing/kprobe_events", __debugfs);
if (ret >= 0) {
pr_debug("Opening %s write=%d\n", buf, readwrite);
if (readwrite && !probe_event_dry_run)
@@ -1143,17 +1311,30 @@ static int open_kprobe_events(bool readwrite)
if (ret < 0) {
if (errno == ENOENT)
- pr_warning("kprobe_events file does not exist - please"
- " rebuild kernel with CONFIG_KPROBE_EVENT.\n");
+ pr_warning("%s file does not exist - please"
+ " rebuild kernel with CONFIG_%s_EVENT.\n",
+ is_kprobe ? "kprobe_events" : "uprobe_events",
+ is_kprobe ? "KPROBE" : "UPROBE");
else
- pr_warning("Failed to open kprobe_events file: %s\n",
- strerror(errno));
+ pr_warning("Failed to open %s file: %s\n",
+ is_kprobe ? "kprobe_events" : "uprobe_events",
+ strerror(errno));
}
return ret;
}
-/* Get raw string list of current kprobe_events */
-static struct strlist *get_kprobe_trace_command_rawlist(int fd)
+static int open_kprobe_events(bool readwrite)
+{
+ return open_probe_events(readwrite, 1);
+}
+
+static int open_uprobe_events(bool readwrite)
+{
+ return open_probe_events(readwrite, 0);
+}
+
+/* Get raw string list of current kprobe_events or uprobe_events */
+static struct strlist *get_probe_trace_command_rawlist(int fd)
{
int ret, idx;
FILE *fp;
@@ -1217,64 +1398,78 @@ static int show_perf_probe_event(struct perf_probe_event *pev)
return ret;
}
-/* List up current perf-probe events */
-int show_perf_probe_events(void)
+static int __show_perf_probe_events(int fd, bool is_kprobe)
{
- int fd, ret;
- struct kprobe_trace_event tev;
+ int ret = 0;
+ struct probe_trace_event tev;
struct perf_probe_event pev;
struct strlist *rawlist;
struct str_node *ent;
- setup_pager();
- ret = init_vmlinux();
- if (ret < 0)
- return ret;
-
memset(&tev, 0, sizeof(tev));
memset(&pev, 0, sizeof(pev));
- fd = open_kprobe_events(false);
- if (fd < 0)
- return fd;
-
- rawlist = get_kprobe_trace_command_rawlist(fd);
- close(fd);
+ rawlist = get_probe_trace_command_rawlist(fd);
if (!rawlist)
return -ENOENT;
strlist__for_each(ent, rawlist) {
- ret = parse_kprobe_trace_command(ent->s, &tev);
+ ret = parse_probe_trace_command(ent->s, &tev);
if (ret >= 0) {
- ret = convert_to_perf_probe_event(&tev, &pev);
+ ret = convert_to_perf_probe_event(&tev, &pev,
+ is_kprobe);
if (ret >= 0)
ret = show_perf_probe_event(&pev);
}
clear_perf_probe_event(&pev);
- clear_kprobe_trace_event(&tev);
+ clear_probe_trace_event(&tev);
if (ret < 0)
break;
}
strlist__delete(rawlist);
+ return ret;
+}
+
+/* List up current perf-probe events */
+int show_perf_probe_events(void)
+{
+ int fd, ret;
+
+ setup_pager();
+ fd = open_kprobe_events(false);
+ if (fd < 0)
+ return fd;
+
+ ret = init_vmlinux();
+ if (ret < 0)
+ return ret;
+
+ ret = __show_perf_probe_events(fd, true);
+ close(fd);
+
+ fd = open_uprobe_events(false);
+ if (fd >= 0) {
+ ret = __show_perf_probe_events(fd, false);
+ close(fd);
+ }
return ret;
}
/* Get current perf-probe event names */
-static struct strlist *get_kprobe_trace_event_names(int fd, bool include_group)
+static struct strlist *get_probe_trace_event_names(int fd, bool include_group)
{
char buf[128];
struct strlist *sl, *rawlist;
struct str_node *ent;
- struct kprobe_trace_event tev;
+ struct probe_trace_event tev;
int ret = 0;
memset(&tev, 0, sizeof(tev));
-
- rawlist = get_kprobe_trace_command_rawlist(fd);
+ rawlist = get_probe_trace_command_rawlist(fd);
sl = strlist__new(true, NULL);
strlist__for_each(ent, rawlist) {
- ret = parse_kprobe_trace_command(ent->s, &tev);
+ ret = parse_probe_trace_command(ent->s, &tev);
if (ret < 0)
break;
if (include_group) {
@@ -1284,7 +1479,7 @@ static struct strlist *get_kprobe_trace_event_names(int fd, bool include_group)
ret = strlist__add(sl, buf);
} else
ret = strlist__add(sl, tev.event);
- clear_kprobe_trace_event(&tev);
+ clear_probe_trace_event(&tev);
if (ret < 0)
break;
}
@@ -1297,13 +1492,13 @@ static struct strlist *get_kprobe_trace_event_names(int fd, bool include_group)
return sl;
}
-static int write_kprobe_trace_event(int fd, struct kprobe_trace_event *tev)
+static int write_probe_trace_event(int fd, struct probe_trace_event *tev)
{
int ret = 0;
- char *buf = synthesize_kprobe_trace_command(tev);
+ char *buf = synthesize_probe_trace_command(tev);
if (!buf) {
- pr_debug("Failed to synthesize kprobe trace event.\n");
+ pr_debug("Failed to synthesize probe trace event.\n");
return -EINVAL;
}
@@ -1356,21 +1551,24 @@ static int get_new_event_name(char *buf, size_t len, const char *base,
return ret;
}
-static int __add_kprobe_trace_events(struct perf_probe_event *pev,
- struct kprobe_trace_event *tevs,
+static int __add_probe_trace_events(struct perf_probe_event *pev,
+ struct probe_trace_event *tevs,
int ntevs, bool allow_suffix)
{
int i, fd, ret;
- struct kprobe_trace_event *tev = NULL;
+ struct probe_trace_event *tev = NULL;
char buf[64];
const char *event, *group;
struct strlist *namelist;
- fd = open_kprobe_events(true);
+ if (pev->upid)
+ fd = open_uprobe_events(true);
+ else
+ fd = open_kprobe_events(true);
if (fd < 0)
return fd;
/* Get current event names */
- namelist = get_kprobe_trace_event_names(fd, false);
+ namelist = get_probe_trace_event_names(fd, false);
if (!namelist) {
pr_debug("Failed to get current event list.\n");
return -EIO;
@@ -1380,17 +1578,28 @@ static int __add_kprobe_trace_events(struct perf_probe_event *pev,
printf("Add new event%s\n", (ntevs > 1) ? "s:" : ":");
for (i = 0; i < ntevs; i++) {
tev = &tevs[i];
- if (pev->event)
- event = pev->event;
- else
- if (pev->point.function)
- event = pev->point.function;
- else
- event = tev->point.symbol;
+
if (pev->group)
group = pev->group;
- else
+ else if (!pev->upid)
group = PERFPROBE_GROUP;
+ else {
+ /*
+ * For uprobes based probes create a group
+ * probe_<pid>.
+ */
+ snprintf(buf, 64, "%s_%d", PERFPROBE_GROUP, pev->upid);
+ group = buf;
+ }
+
+ tev->group = strdup(group);
+
+ if (pev->event)
+ event = pev->event;
+ else if (pev->point.function)
+ event = pev->point.function;
+ else
+ event = tev->point.symbol;
/* Get an unused new event name */
ret = get_new_event_name(buf, 64, event,
@@ -1398,14 +1607,13 @@ static int __add_kprobe_trace_events(struct perf_probe_event *pev,
if (ret < 0)
break;
event = buf;
-
tev->event = strdup(event);
- tev->group = strdup(group);
+
if (tev->event == NULL || tev->group == NULL) {
ret = -ENOMEM;
break;
}
- ret = write_kprobe_trace_event(fd, tev);
+ ret = write_probe_trace_event(fd, tev);
if (ret < 0)
break;
/* Add added event name to namelist */
@@ -1442,21 +1650,21 @@ static int __add_kprobe_trace_events(struct perf_probe_event *pev,
return ret;
}
-static int convert_to_kprobe_trace_events(struct perf_probe_event *pev,
- struct kprobe_trace_event **tevs,
+static int convert_to_probe_trace_events(struct perf_probe_event *pev,
+ struct probe_trace_event **tevs,
int max_tevs)
{
struct symbol *sym;
int ret = 0, i;
- struct kprobe_trace_event *tev;
+ struct probe_trace_event *tev;
/* Convert perf_probe_event with debuginfo */
- ret = try_to_find_kprobe_trace_events(pev, tevs, max_tevs);
+ ret = try_to_find_probe_trace_events(pev, tevs, max_tevs);
if (ret != 0)
return ret;
/* Allocate trace event buffer */
- tev = *tevs = zalloc(sizeof(struct kprobe_trace_event));
+ tev = *tevs = zalloc(sizeof(struct probe_trace_event));
if (tev == NULL)
return -ENOMEM;
@@ -1469,7 +1677,7 @@ static int convert_to_kprobe_trace_events(struct perf_probe_event *pev,
tev->point.offset = pev->point.offset;
tev->nargs = pev->nargs;
if (tev->nargs) {
- tev->args = zalloc(sizeof(struct kprobe_trace_arg)
+ tev->args = zalloc(sizeof(struct probe_trace_arg)
* tev->nargs);
if (tev->args == NULL) {
ret = -ENOMEM;
@@ -1498,6 +1706,11 @@ static int convert_to_kprobe_trace_events(struct perf_probe_event *pev,
}
}
+ if (pev->upid) {
+ tev->upid = pev->upid;
+ return 1;
+ }
+
/* Currently just checking function name from symbol map */
sym = map__find_symbol_by_name(machine.vmlinux_maps[MAP__FUNCTION],
tev->point.symbol, NULL);
@@ -1510,7 +1723,7 @@ static int convert_to_kprobe_trace_events(struct perf_probe_event *pev,
return 1;
error:
- clear_kprobe_trace_event(tev);
+ clear_probe_trace_event(tev);
free(tev);
*tevs = NULL;
return ret;
@@ -1518,30 +1731,32 @@ error:
struct __event_package {
struct perf_probe_event *pev;
- struct kprobe_trace_event *tevs;
+ struct probe_trace_event *tevs;
int ntevs;
};
int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
bool force_add, int max_tevs)
{
- int i, j, ret;
+ int i, j, ret = 0;
struct __event_package *pkgs;
pkgs = zalloc(sizeof(struct __event_package) * npevs);
if (pkgs == NULL)
return -ENOMEM;
- /* Init vmlinux path */
- ret = init_vmlinux();
- if (ret < 0)
- return ret;
+ if (!pevs->upid) {
+ /* Init vmlinux path */
+ ret = init_vmlinux();
+ if (ret < 0)
+ return ret;
+ }
/* Loop 1: convert all events */
for (i = 0; i < npevs; i++) {
pkgs[i].pev = &pevs[i];
/* Convert with or without debuginfo */
- ret = convert_to_kprobe_trace_events(pkgs[i].pev,
+ ret = convert_to_probe_trace_events(pkgs[i].pev,
&pkgs[i].tevs, max_tevs);
if (ret < 0)
goto end;
@@ -1550,24 +1765,24 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
/* Loop 2: add all events */
for (i = 0; i < npevs && ret >= 0; i++)
- ret = __add_kprobe_trace_events(pkgs[i].pev, pkgs[i].tevs,
+ ret = __add_probe_trace_events(pkgs[i].pev, pkgs[i].tevs,
pkgs[i].ntevs, force_add);
end:
/* Loop 3: cleanup trace events */
for (i = 0; i < npevs; i++)
for (j = 0; j < pkgs[i].ntevs; j++)
- clear_kprobe_trace_event(&pkgs[i].tevs[j]);
+ clear_probe_trace_event(&pkgs[i].tevs[j]);
return ret;
}
-static int __del_trace_kprobe_event(int fd, struct str_node *ent)
+static int __del_trace_probe_event(int fd, struct str_node *ent)
{
char *p;
char buf[128];
int ret;
- /* Convert from perf-probe event to trace-kprobe event */
+ /* Convert from perf-probe event to trace-probe event */
ret = e_snprintf(buf, 128, "-:%s", ent->s);
if (ret < 0)
goto error;
@@ -1593,24 +1808,16 @@ error:
return ret;
}
-static int del_trace_kprobe_event(int fd, const char *group,
- const char *event, struct strlist *namelist)
+static int del_trace_probe_event(int fd, const char *buf,
+ struct strlist *namelist)
{
- char buf[128];
struct str_node *ent, *n;
- int found = 0, ret = 0;
-
- ret = e_snprintf(buf, 128, "%s:%s", group, event);
- if (ret < 0) {
- pr_err("Failed to copy event.");
- return ret;
- }
+ int ret = -1;
if (strpbrk(buf, "*?")) { /* Glob-exp */
strlist__for_each_safe(ent, n, namelist)
if (strglobmatch(ent->s, buf)) {
- found++;
- ret = __del_trace_kprobe_event(fd, ent);
+ ret = __del_trace_probe_event(fd, ent);
if (ret < 0)
break;
strlist__remove(namelist, ent);
@@ -1618,40 +1825,44 @@ static int del_trace_kprobe_event(int fd, const char *group,
} else {
ent = strlist__find(namelist, buf);
if (ent) {
- found++;
- ret = __del_trace_kprobe_event(fd, ent);
+ ret = __del_trace_probe_event(fd, ent);
if (ret >= 0)
strlist__remove(namelist, ent);
}
}
- if (found == 0 && ret >= 0)
- pr_info("Info: Event \"%s\" does not exist.\n", buf);
-
return ret;
}
-int del_perf_probe_events(struct strlist *dellist)
+int del_perf_probe_events(struct strlist *dellist, pid_t pid)
{
- int fd, ret = 0;
+ int ret = -1, ufd = -1, kfd = -1;
+ char buf[128];
const char *group, *event;
char *p, *str;
struct str_node *ent;
- struct strlist *namelist;
+ struct strlist *namelist = NULL, *unamelist = NULL;
- fd = open_kprobe_events(true);
- if (fd < 0)
- return fd;
/* Get current event names */
- namelist = get_kprobe_trace_event_names(fd, true);
- if (namelist == NULL)
- return -EINVAL;
+ if (!pid) {
+ kfd = open_kprobe_events(true);
+ if (kfd < 0)
+ return kfd;
+ namelist = get_probe_trace_event_names(kfd, true);
+ }
+
+ ufd = open_uprobe_events(true);
+ if (ufd >= 0)
+ unamelist = get_probe_trace_event_names(ufd, true);
+
+ if (namelist == NULL && unamelist == NULL)
+ goto error;
strlist__for_each(ent, dellist) {
str = strdup(ent->s);
if (str == NULL) {
ret = -ENOMEM;
- break;
+ goto error;
}
pr_debug("Parsing: %s\n", str);
p = strchr(str, ':');
@@ -1663,15 +1874,36 @@ int del_perf_probe_events(struct strlist *dellist)
group = "*";
event = str;
}
+
+ ret = e_snprintf(buf, 128, "%s:%s", group, event);
+ if (ret < 0) {
+ pr_err("Failed to copy event.");
+ free(str);
+ goto error;
+ }
+
pr_debug("Group: %s, Event: %s\n", group, event);
- ret = del_trace_kprobe_event(fd, group, event, namelist);
+ if (!pid && namelist)
+ ret = del_trace_probe_event(kfd, buf, namelist);
+ if (unamelist && ret != 0)
+ ret = del_trace_probe_event(ufd, buf, unamelist);
+
free(str);
- if (ret < 0)
- break;
+ if (ret != 0)
+ pr_info("Info: Event \"%s\" does not exist.\n", buf);
}
- strlist__delete(namelist);
- close(fd);
+error:
+ if (kfd >= 0) {
+ if (namelist)
+ strlist__delete(namelist);
+ close(kfd);
+ }
+
+ if (ufd >= 0) {
+ if (unamelist)
+ strlist__delete(unamelist);
+ close(ufd);
+ }
return ret;
}
-
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index bc06d3e..f69f98e 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -6,34 +6,35 @@
extern bool probe_event_dry_run;
-/* kprobe-tracer tracing point */
-struct kprobe_trace_point {
+/* kprobe-tracer and uprobe-tracer tracing point */
+struct probe_trace_point {
char *symbol; /* Base symbol */
unsigned long offset; /* Offset from symbol */
bool retprobe; /* Return probe flag */
};
-/* kprobe-tracer tracing argument referencing offset */
-struct kprobe_trace_arg_ref {
- struct kprobe_trace_arg_ref *next; /* Next reference */
+/* probe-tracer tracing argument referencing offset */
+struct probe_trace_arg_ref {
+ struct probe_trace_arg_ref *next; /* Next reference */
long offset; /* Offset value */
};
-/* kprobe-tracer tracing argument */
-struct kprobe_trace_arg {
+/* kprobe-tracer and uprobe-tracer tracing argument */
+struct probe_trace_arg {
char *name; /* Argument name */
char *value; /* Base value */
char *type; /* Type name */
- struct kprobe_trace_arg_ref *ref; /* Referencing offset */
+ struct probe_trace_arg_ref *ref; /* Referencing offset */
};
-/* kprobe-tracer tracing event (point + arg) */
-struct kprobe_trace_event {
+/* kprobe-tracer and uprobe-tracer tracing event (point + arg) */
+struct probe_trace_event {
char *event; /* Event name */
char *group; /* Group name */
- struct kprobe_trace_point point; /* Trace point */
+ struct probe_trace_point point; /* Trace point */
int nargs; /* Number of args */
- struct kprobe_trace_arg *args; /* Arguments */
+ pid_t upid; /* uprobes only */
+ struct probe_trace_arg *args; /* Arguments */
};
/* Perf probe probing point */
@@ -68,6 +69,7 @@ struct perf_probe_event {
char *group; /* Group name */
struct perf_probe_point point; /* Probe point */
int nargs; /* Number of arguments */
+ pid_t upid;
struct perf_probe_arg *args; /* Arguments */
};
@@ -92,25 +94,18 @@ struct line_range {
/* Command string to events */
extern int parse_perf_probe_command(const char *cmd,
struct perf_probe_event *pev);
-extern int parse_kprobe_trace_command(const char *cmd,
- struct kprobe_trace_event *tev);
/* Events to command string */
extern char *synthesize_perf_probe_command(struct perf_probe_event *pev);
-extern char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev);
+extern char *synthesize_probe_trace_command(struct probe_trace_event *tev);
extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf,
size_t len);
/* Check the perf_probe_event needs debuginfo */
extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
-/* Convert from kprobe_trace_event to perf_probe_event */
-extern int convert_to_perf_probe_event(struct kprobe_trace_event *tev,
- struct perf_probe_event *pev);
-
/* Release event contents */
extern void clear_perf_probe_event(struct perf_probe_event *pev);
-extern void clear_kprobe_trace_event(struct kprobe_trace_event *tev);
/* Command string to line-range */
extern int parse_line_range_desc(const char *cmd, struct line_range *lr);
@@ -118,7 +113,7 @@ extern int parse_line_range_desc(const char *cmd, struct line_range *lr);
extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
bool force_add, int max_probe_points);
-extern int del_perf_probe_events(struct strlist *dellist);
+extern int del_perf_probe_events(struct strlist *dellist, pid_t pid);
extern int show_perf_probe_events(void);
extern int show_line_range(struct line_range *lr);
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 3e64e1f..f3a024a 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -406,10 +406,10 @@ static Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
* Probe finder related functions
*/
-static struct kprobe_trace_arg_ref *alloc_trace_arg_ref(long offs)
+static struct probe_trace_arg_ref *alloc_trace_arg_ref(long offs)
{
- struct kprobe_trace_arg_ref *ref;
- ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+ struct probe_trace_arg_ref *ref;
+ ref = zalloc(sizeof(struct probe_trace_arg_ref));
if (ref != NULL)
ref->offset = offs;
return ref;
@@ -425,7 +425,7 @@ static int convert_variable_location(Dwarf_Die *vr_die, struct probe_finder *pf)
Dwarf_Word offs = 0;
bool ref = false;
const char *regs;
- struct kprobe_trace_arg *tvar = pf->tvar;
+ struct probe_trace_arg *tvar = pf->tvar;
int ret;
/* TODO: handle more than 1 exprs */
@@ -499,10 +499,10 @@ static int convert_variable_location(Dwarf_Die *vr_die, struct probe_finder *pf)
}
static int convert_variable_type(Dwarf_Die *vr_die,
- struct kprobe_trace_arg *tvar,
+ struct probe_trace_arg *tvar,
const char *cast)
{
- struct kprobe_trace_arg_ref **ref_ptr = &tvar->ref;
+ struct probe_trace_arg_ref **ref_ptr = &tvar->ref;
Dwarf_Die type;
char buf[16];
int ret;
@@ -540,7 +540,7 @@ static int convert_variable_type(Dwarf_Die *vr_die,
while (*ref_ptr)
ref_ptr = &(*ref_ptr)->next;
/* Add new reference with offset +0 */
- *ref_ptr = zalloc(sizeof(struct kprobe_trace_arg_ref));
+ *ref_ptr = zalloc(sizeof(struct probe_trace_arg_ref));
if (*ref_ptr == NULL) {
pr_warning("Out of memory error\n");
return -ENOMEM;
@@ -585,10 +585,10 @@ static int convert_variable_type(Dwarf_Die *vr_die,
static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
struct perf_probe_arg_field *field,
- struct kprobe_trace_arg_ref **ref_ptr,
+ struct probe_trace_arg_ref **ref_ptr,
Dwarf_Die *die_mem)
{
- struct kprobe_trace_arg_ref *ref = *ref_ptr;
+ struct probe_trace_arg_ref *ref = *ref_ptr;
Dwarf_Die type;
Dwarf_Word offs;
int ret, tag;
@@ -614,7 +614,7 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
pr_debug2("Array real type: (%x)\n",
(unsigned)dwarf_dieoffset(&type));
if (tag == DW_TAG_pointer_type) {
- ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+ ref = zalloc(sizeof(struct probe_trace_arg_ref));
if (ref == NULL)
return -ENOMEM;
if (*ref_ptr)
@@ -645,7 +645,7 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
return -EINVAL;
}
- ref = zalloc(sizeof(struct kprobe_trace_arg_ref));
+ ref = zalloc(sizeof(struct probe_trace_arg_ref));
if (ref == NULL)
return -ENOMEM;
if (*ref_ptr)
@@ -778,7 +778,7 @@ static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
/* Show a probe point to output buffer */
static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
{
- struct kprobe_trace_event *tev;
+ struct probe_trace_event *tev;
Dwarf_Addr eaddr;
Dwarf_Die die_mem;
const char *name;
@@ -843,7 +843,7 @@ static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
/* Find each argument */
tev->nargs = pf->pev->nargs;
- tev->args = zalloc(sizeof(struct kprobe_trace_arg) * tev->nargs);
+ tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs);
if (tev->args == NULL)
return -ENOMEM;
for (i = 0; i < pf->pev->nargs; i++) {
@@ -1100,9 +1100,9 @@ static int find_probe_point_by_func(struct probe_finder *pf)
return _param.retval;
}
-/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
-int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
- struct kprobe_trace_event **tevs, int max_tevs)
+/* Find probe_trace_events specified by perf_probe_event from debuginfo */
+int find_probe_trace_events(int fd, struct perf_probe_event *pev,
+ struct probe_trace_event **tevs, int max_tevs)
{
struct probe_finder pf = {.pev = pev, .max_tevs = max_tevs};
struct perf_probe_point *pp = &pev->point;
@@ -1112,7 +1112,7 @@ int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
Dwarf *dbg;
int ret = 0;
- pf.tevs = zalloc(sizeof(struct kprobe_trace_event) * max_tevs);
+ pf.tevs = zalloc(sizeof(struct probe_trace_event) * max_tevs);
if (pf.tevs == NULL)
return -ENOMEM;
*tevs = pf.tevs;
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index e1f61dc..4507d51 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -16,9 +16,9 @@ static inline int is_c_varname(const char *name)
}
#ifdef DWARF_SUPPORT
-/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
-extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
- struct kprobe_trace_event **tevs,
+/* Find probe_trace_events specified by perf_probe_event from debuginfo */
+extern int find_probe_trace_events(int fd, struct perf_probe_event *pev,
+ struct probe_trace_event **tevs,
int max_tevs);
/* Find a perf_probe_point from debuginfo */
@@ -33,7 +33,7 @@ extern int find_line_range(int fd, struct line_range *lr);
struct probe_finder {
struct perf_probe_event *pev; /* Target probe event */
- struct kprobe_trace_event *tevs; /* Result trace events */
+ struct probe_trace_event *tevs; /* Result trace events */
int ntevs; /* Number of trace events */
int max_tevs; /* Max number of trace events */
@@ -50,7 +50,7 @@ struct probe_finder {
#endif
Dwarf_Op *fb_ops; /* Frame base attribute */
struct perf_probe_arg *pvar; /* Current target variable */
- struct kprobe_trace_arg *tvar; /* Current result variable */
+ struct probe_trace_arg *tvar; /* Current result variable */
};
struct line_finder {
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists