Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932352Ab1DAOrF (ORCPT ); Fri, 1 Apr 2011 10:47:05 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:41875 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932099Ab1DAOrB (ORCPT ); Fri, 1 Apr 2011 10:47:01 -0400 From: Srikar Dronamraju To: Peter Zijlstra , Ingo Molnar Cc: Steven Rostedt , Srikar Dronamraju , Linux-mm , Arnaldo Carvalho de Melo , Linus Torvalds , Jonathan Corbet , Christoph Hellwig , Masami Hiramatsu , Thomas Gleixner , Ananth N Mavinakayanahalli , Oleg Nesterov , Andrew Morton , SystemTap , Jim Keniston , Roland McGrath , Andi Kleen , LKML Date: Fri, 01 Apr 2011 20:07:17 +0530 Message-Id: <20110401143717.15455.5648.sendpatchset@localhost6.localdomain6> In-Reply-To: <20110401143223.15455.19844.sendpatchset@localhost6.localdomain6> References: <20110401143223.15455.19844.sendpatchset@localhost6.localdomain6> Subject: [PATCH v3 2.6.39-rc1-tip 24/26] 24: perf: perf interface for uprobes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 22005 Lines: 792 Enhances perf probe to user space executables and libraries. Provides very basic support for uprobes. [ Probing a function in the executable using function name ] ------------------------------------------------------------- [root@localhost ~]# perf probe -u zfree@/bin/zsh Add new event: probe_zsh:zfree (on /bin/zsh:0x45400) You can now use it on all perf tools, such as: perf record -e probe_zsh:zfree -aR sleep 1 [root@localhost ~]# perf record -e probe_zsh:zfree -aR sleep 15 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.314 MB perf.data (~13715 samples) ] [root@localhost ~]# perf report --stdio # Events: 3K probe_zsh:zfree # # Overhead Command Shared Object Symbol # ........ ....... ............. ...... # 100.00% zsh zsh [.] zfree # # (For a higher level overview, try: perf report --sort comm,dso) # [root@localhost ~] [ Probing a library function using function name ] -------------------------------------------------- [root@localhost]# [root@localhost]# perf probe -u malloc@/lib64/libc.so.6 Add new event: probe_libc:malloc (on /lib64/libc-2.5.so:0x74dc0) You can now use it on all perf tools, such as: perf record -e probe_libc:malloc -aR sleep 1 [root@localhost]# [root@localhost]# perf probe --list probe_libc:malloc (on /lib64/libc-2.5.so:0x0000000000074dc0) Signed-off-by: Srikar Dronamraju --- tools/perf/builtin-probe.c | 9 + tools/perf/util/probe-event.c | 387 +++++++++++++++++++++++++++++++++-------- tools/perf/util/probe-event.h | 8 + 3 files changed, 322 insertions(+), 82 deletions(-) diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 6ceebea..ce9c1d8 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -79,6 +79,7 @@ static int parse_probe_event(const char *str) return -1; } + pev->uprobes = params.uprobes; /* Parse a perf-probe command into event */ ret = parse_perf_probe_command(str, pev); pr_debug("%d arguments\n", pev->nargs); @@ -250,7 +251,7 @@ static const struct option options[] = { "Set how many probe points can be found for a probe."), OPT_BOOLEAN('F', "funcs", ¶ms.show_funcs, "Show potential probe-able functions."), - OPT_BOOLEAN('u', "uprobe", ¶ms.uprobes, + OPT_BOOLEAN('u', "uprobes", ¶ms.uprobes, "user space probe events"), OPT_STRING('e', "exe", ¶ms.target, "executable", "userspace executable or library"), @@ -309,6 +310,10 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) pr_err(" Error: Don't use --list with --funcs.\n"); usage_with_options(probe_usage, options); } + if (params.uprobes) { + pr_warning(" Error: Don't use --list with --uprobes.\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", @@ -342,7 +347,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) } #ifdef DWARF_SUPPORT - if (params.show_lines) { + if (params.show_lines && !params.uprobes) { if (params.mod_events) { pr_err(" Error: Don't use --line with" " --add/--del.\n"); diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index cf77feb..532c7d1 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -74,6 +74,7 @@ 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/modules */ @@ -170,6 +171,31 @@ const char *kernel_get_module_path(const char *module) return (dso) ? dso->long_name : NULL; } +static int init_perf_uprobes(void) +{ + int ret = 0; + + symbol_conf.try_vmlinux_path = false; + symbol_conf.sort_by_name = true; + ret = symbol__init(); + if (ret < 0) + pr_debug("Failed to init symbol map.\n"); + + 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(const char *module) { @@ -223,6 +249,15 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev, bool need_dwarf = perf_probe_event_need_dwarf(pev); int fd, ntevs; + if (pev->uprobes) { + if (need_dwarf) { + pr_warning("Debuginfo-analysis is not yet supported" + " with -u/--uprobes option.\n"); + return -ENOSYS; + } + return convert_name_to_addr(pev); + } + fd = open_vmlinux(module); if (fd < 0) { if (need_dwarf) { @@ -541,13 +576,7 @@ static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp, pr_err("Failed to find symbol %s in kernel.\n", tp->symbol); return -ENOENT; } - 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_probe_trace_events(struct perf_probe_event *pev, @@ -558,6 +587,9 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev, pr_warning("Debuginfo-analysis is not supported.\n"); return -ENOSYS; } + if (pev->uprobes) + return convert_name_to_addr(pev); + return 0; } @@ -688,6 +720,7 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) struct perf_probe_point *pp = &pev->point; char *ptr, *tmp; char c, nc = 0; + bool found = false; /* * * perf probe [EVENT=]SRC[:LN|;PTN] @@ -726,8 +759,11 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) if (tmp == NULL) return -ENOMEM; - /* Check arg is function or file and copy it */ - if (strchr(tmp, '.')) /* File */ + /* + * Check arg is function or file and copy it. + * If its uprobes then expect the function to be of type a@b.c + */ + if (!pev->uprobes && strchr(tmp, '.')) /* File */ pp->file = tmp; else /* Function */ pp->function = tmp; @@ -765,6 +801,17 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) } break; case '@': /* File name */ + if (pev->uprobes && !found) { + /* uprobes overloads @ operator */ + tmp = zalloc(sizeof(char *) * MAX_PROBE_ARGS); + e_snprintf(tmp, MAX_PROBE_ARGS, "%s@%s", + pp->function, arg); + free(pp->function); + pp->function = tmp; + found = true; + break; + } + if (pp->file) { semantic_error("SRC@SRC is not allowed.\n"); return -EINVAL; @@ -822,6 +869,11 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) return -EINVAL; } + if (pev->uprobes && !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.\n"); @@ -831,6 +883,11 @@ 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->uprobes && perf_probe_event_need_dwarf(pev)) { + semantic_error("no dwarf based probes for uprobes."); + return -EINVAL; + } return 0; } @@ -982,7 +1039,8 @@ 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->uprobes) || pev->point.line || + pev->point.lazy_line) return true; for (i = 0; i < pev->nargs; i++) @@ -1273,10 +1331,21 @@ char *synthesize_probe_trace_command(struct probe_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->uprobes) + len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s", + tp->retprobe ? 'r' : 'p', + tev->group, tev->event, 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; @@ -1295,7 +1364,7 @@ error: } static int convert_to_perf_probe_event(struct probe_trace_event *tev, - struct perf_probe_event *pev) + struct perf_probe_event *pev, bool is_kprobe) { char buf[64] = ""; int i, ret; @@ -1307,7 +1376,11 @@ static int convert_to_perf_probe_event(struct probe_trace_event *tev, return -ENOMEM; /* Convert trace_point to probe_point */ - ret = kprobe_convert_to_perf_probe(&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; @@ -1401,7 +1474,7 @@ static void clear_probe_trace_event(struct probe_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; @@ -1412,8 +1485,13 @@ 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) @@ -1424,16 +1502,29 @@ 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 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; @@ -1498,36 +1589,26 @@ 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; + 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_probe_trace_command_rawlist(fd); - close(fd); if (!rawlist) return -ENOENT; strlist__for_each(ent, rawlist) { 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); } @@ -1537,6 +1618,31 @@ int show_perf_probe_events(void) 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; } @@ -1646,7 +1752,10 @@ static int __add_probe_trace_events(struct perf_probe_event *pev, const char *event, *group; struct strlist *namelist; - fd = open_kprobe_events(true); + if (pev->uprobes) + fd = open_uprobe_events(true); + else + fd = open_kprobe_events(true); if (fd < 0) return fd; /* Get current event names */ @@ -1660,18 +1769,19 @@ static int __add_probe_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 group = PERFPROBE_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, namelist, allow_suffix); @@ -1749,6 +1859,7 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev, tev->point.offset = pev->point.offset; tev->point.retprobe = pev->point.retprobe; tev->nargs = pev->nargs; + tev->uprobes = pev->uprobes; if (tev->nargs) { tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs); @@ -1779,6 +1890,9 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev, } } + if (pev->uprobes) + return 1; + /* Currently just checking function name from symbol map */ sym = __find_kernel_function_by_name(tev->point.symbol, NULL); if (!sym) { @@ -1805,15 +1919,19 @@ struct __event_package { int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, int max_tevs, const char *module, bool force_add) { - 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 (!pevs->uprobes) + /* Init vmlinux path */ + ret = init_vmlinux(); + else + ret = init_perf_uprobes(); + if (ret < 0) { free(pkgs); return ret; @@ -1883,23 +2001,15 @@ error: return ret; } -static int del_trace_probe_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.\n"); - 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_probe_event(fd, ent); if (ret < 0) break; @@ -1908,40 +2018,42 @@ static int del_trace_probe_event(int fd, const char *group, } else { ent = strlist__find(namelist, buf); if (ent) { - found++; 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 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_probe_trace_event_names(fd, true); - if (namelist == NULL) - return -EINVAL; + 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, ':'); @@ -1953,15 +2065,37 @@ 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_probe_event(fd, group, event, namelist); + if (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; } @@ -2036,3 +2170,102 @@ int show_available_funcs(const char *elfobject, struct strfilter *_filter, map__delete(map); return ret; } + +#define DEFAULT_FUNC_FILTER "!_*" + +/* + * 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 symbol *sym; + struct map *map; + char *name = NULL, *tmpname = NULL, *function = NULL; + int ret = -EINVAL; + unsigned long long vaddr = 0; + + /* check if user has specifed a virtual address + vaddr = strtoul(pp->function, NULL, 0); */ + if (!pp->function) + goto out; + + function = strdup(pp->function); + if (!function) { + pr_warning("Failed to allocate memory by strdup.\n"); + ret = -ENOMEM; + goto out; + } + + tmpname = strchr(function, '@'); + if (!tmpname) { + pr_warning("Cannot break %s into function and file\n", + function); + goto out; + } + + *tmpname = '\0'; + name = realpath(tmpname + 1, NULL); + if (!name) { + pr_warning("Cannot find realpath for %s.\n", tmpname + 1); + goto out; + } + + map = dso__new_map(name); + if (!map) { + pr_warning("Cannot find appropriate DSO for %s.\n", name); + goto out; + } + available_func_filter = strfilter__new(DEFAULT_FUNC_FILTER, NULL); + if (map__load(map, filter_available_functions)) { + pr_err("Failed to load map.\n"); + return -EINVAL; + } + + sym = map__find_symbol_by_name(map, function, NULL); + if (!sym) { + pr_warning("Cannot find %s in DSO %s\n", function, name); + goto out; + } + + if (map->start > sym->start) + vaddr = map->start; + vaddr += sym->start + pp->offset + map->pgoff; + pp->offset = 0; + + if (!pev->event) { + pev->event = function; + function = NULL; + } + if (!pev->group) { + char *ptr1, *ptr2; + + pev->group = zalloc(sizeof(char *) * 64); + ptr1 = strdup(basename(name)); + if (ptr1) { + ptr2 = strpbrk(ptr1, "-._"); + if (ptr2) + *ptr2 = '\0'; + e_snprintf(pev->group, 64, "%s_%s", PERFPROBE_GROUP, + ptr1); + free(ptr1); + } + } + 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 out; + } + e_snprintf(pp->function, MAX_PROBE_ARGS, "%s:0x%llx", name, vaddr); + ret = 0; + +out: + if (function) + free(function); + if (name) + free(name); + return ret; +} diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 4c24a85..5199df4 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -7,7 +7,7 @@ extern bool probe_event_dry_run; -/* kprobe-tracer tracing point */ +/* kprobe-tracer and uprobe-tracer tracing point */ struct probe_trace_point { char *symbol; /* Base symbol */ unsigned long offset; /* Offset from symbol */ @@ -20,7 +20,7 @@ struct probe_trace_arg_ref { long offset; /* Offset value */ }; -/* kprobe-tracer tracing argument */ +/* kprobe-tracer and uprobe-tracer tracing argument */ struct probe_trace_arg { char *name; /* Argument name */ char *value; /* Base value */ @@ -28,12 +28,13 @@ struct probe_trace_arg { struct probe_trace_arg_ref *ref; /* Referencing offset */ }; -/* kprobe-tracer tracing event (point + arg) */ +/* kprobe-tracer and uprobe-tracer tracing event (point + arg) */ struct probe_trace_event { char *event; /* Event name */ char *group; /* Group name */ struct probe_trace_point point; /* Trace point */ int nargs; /* Number of args */ + bool uprobes; /* uprobes only */ struct probe_trace_arg *args; /* Arguments */ }; @@ -69,6 +70,7 @@ struct perf_probe_event { char *group; /* Group name */ struct perf_probe_point point; /* Probe point */ int nargs; /* Number of arguments */ + bool uprobes; struct perf_probe_arg *args; /* Arguments */ }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/