From 91d7b2de318ff701451dfc7ede1c029b150ef0e9 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 14 Apr 2016 14:48:07 -0300 Subject: perf callchain: Start moving away from global per thread cursors The recent perf_evsel__fprintf_callchain() move to evsel.c added several new symbol requirements to the python binding, for instance: # perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 18030 Traceback (most recent call last): File "", line 1, in ImportError: /tmp/build/perf/python/perf.so: undefined symbol: callchain_cursor test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! # This would require linking against callchain.c to access to the global callchain_cursor variables. Since lots of functions already receive as a parameter a callchain_cursor struct pointer, make that be the case for some more function so that we can start phasing out usage of yet another global variable. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-djko3097eyg2rn66v2qcqfvn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/scripting-engines/trace-event-python.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index fbd05242b4e5..525eb49e7ba6 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -323,7 +323,7 @@ static PyObject *python_process_callchain(struct perf_sample *sample, if (!symbol_conf.use_callchain || !sample->callchain) goto exit; - if (thread__resolve_callchain(al->thread, evsel, + if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel, sample, NULL, NULL, scripting_max_stack) != 0) { pr_err("Failed to resolve callchain. Skipping\n"); -- cgit v1.2.3 From 451db12617bc6ff1bb8ed456ed4f257594134255 Mon Sep 17 00:00:00 2001 From: Chris Phlipot Date: Thu, 28 Apr 2016 01:19:07 -0700 Subject: perf tools: Refactor code to move call path handling out of thread-stack Move the call path handling code out of thread-stack.c and thread-stack.h to allow other components that are not part of thread-stack to create call paths. Summary: - Create call-path.c and call-path.h and add them to the build. - Move all call path related code out of thread-stack.c and thread-stack.h and into call-path.c and call-path.h. - A small subset of structures and functions are now visible through call-path.h, which is required for thread-stack.c to continue to compile. This change is a prerequisite for subsequent patches in this change set and by itself contains no user-visible changes. Signed-off-by: Chris Phlipot Acked-by: Adrian Hunter Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1461831551-12213-3-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/Build | 1 + tools/perf/util/call-path.c | 122 ++++++++++++++++++++ tools/perf/util/call-path.h | 77 +++++++++++++ tools/perf/util/db-export.c | 1 + .../util/scripting-engines/trace-event-python.c | 1 + tools/perf/util/thread-stack.c | 126 +-------------------- tools/perf/util/thread-stack.h | 25 +--- 7 files changed, 204 insertions(+), 149 deletions(-) create mode 100644 tools/perf/util/call-path.c create mode 100644 tools/perf/util/call-path.h (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 90229a88f969..027bb2b89d7f 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -74,6 +74,7 @@ libperf-y += srcline.o libperf-y += data.o libperf-y += tsc.o libperf-y += cloexec.o +libperf-y += call-path.o libperf-y += thread-stack.o libperf-$(CONFIG_AUXTRACE) += auxtrace.o libperf-$(CONFIG_AUXTRACE) += intel-pt-decoder/ diff --git a/tools/perf/util/call-path.c b/tools/perf/util/call-path.c new file mode 100644 index 000000000000..904a17052e38 --- /dev/null +++ b/tools/perf/util/call-path.c @@ -0,0 +1,122 @@ +/* + * call-path.h: Manipulate a tree data structure containing function call paths + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ + +#include +#include + +#include "util.h" +#include "call-path.h" + +static void call_path__init(struct call_path *cp, struct call_path *parent, + struct symbol *sym, u64 ip, bool in_kernel) +{ + cp->parent = parent; + cp->sym = sym; + cp->ip = sym ? 0 : ip; + cp->db_id = 0; + cp->in_kernel = in_kernel; + RB_CLEAR_NODE(&cp->rb_node); + cp->children = RB_ROOT; +} + +struct call_path_root *call_path_root__new(void) +{ + struct call_path_root *cpr; + + cpr = zalloc(sizeof(struct call_path_root)); + if (!cpr) + return NULL; + call_path__init(&cpr->call_path, NULL, NULL, 0, false); + INIT_LIST_HEAD(&cpr->blocks); + return cpr; +} + +void call_path_root__free(struct call_path_root *cpr) +{ + struct call_path_block *pos, *n; + + list_for_each_entry_safe(pos, n, &cpr->blocks, node) { + list_del(&pos->node); + free(pos); + } + free(cpr); +} + +static struct call_path *call_path__new(struct call_path_root *cpr, + struct call_path *parent, + struct symbol *sym, u64 ip, + bool in_kernel) +{ + struct call_path_block *cpb; + struct call_path *cp; + size_t n; + + if (cpr->next < cpr->sz) { + cpb = list_last_entry(&cpr->blocks, struct call_path_block, + node); + } else { + cpb = zalloc(sizeof(struct call_path_block)); + if (!cpb) + return NULL; + list_add_tail(&cpb->node, &cpr->blocks); + cpr->sz += CALL_PATH_BLOCK_SIZE; + } + + n = cpr->next++ & CALL_PATH_BLOCK_MASK; + cp = &cpb->cp[n]; + + call_path__init(cp, parent, sym, ip, in_kernel); + + return cp; +} + +struct call_path *call_path__findnew(struct call_path_root *cpr, + struct call_path *parent, + struct symbol *sym, u64 ip, u64 ks) +{ + struct rb_node **p; + struct rb_node *node_parent = NULL; + struct call_path *cp; + bool in_kernel = ip >= ks; + + if (sym) + ip = 0; + + if (!parent) + return call_path__new(cpr, parent, sym, ip, in_kernel); + + p = &parent->children.rb_node; + while (*p != NULL) { + node_parent = *p; + cp = rb_entry(node_parent, struct call_path, rb_node); + + if (cp->sym == sym && cp->ip == ip) + return cp; + + if (sym < cp->sym || (sym == cp->sym && ip < cp->ip)) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + cp = call_path__new(cpr, parent, sym, ip, in_kernel); + if (!cp) + return NULL; + + rb_link_node(&cp->rb_node, node_parent, p); + rb_insert_color(&cp->rb_node, &parent->children); + + return cp; +} diff --git a/tools/perf/util/call-path.h b/tools/perf/util/call-path.h new file mode 100644 index 000000000000..477f6d03b659 --- /dev/null +++ b/tools/perf/util/call-path.h @@ -0,0 +1,77 @@ +/* + * call-path.h: Manipulate a tree data structure containing function call paths + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ + +#ifndef __PERF_CALL_PATH_H +#define __PERF_CALL_PATH_H + +#include + +#include +#include + +/** + * struct call_path - node in list of calls leading to a function call. + * @parent: call path to the parent function call + * @sym: symbol of function called + * @ip: only if sym is null, the ip of the function + * @db_id: id used for db-export + * @in_kernel: whether function is a in the kernel + * @rb_node: node in parent's tree of called functions + * @children: tree of call paths of functions called + * + * In combination with the call_return structure, the call_path structure + * defines a context-sensitve call-graph. + */ +struct call_path { + struct call_path *parent; + struct symbol *sym; + u64 ip; + u64 db_id; + bool in_kernel; + struct rb_node rb_node; + struct rb_root children; +}; + +#define CALL_PATH_BLOCK_SHIFT 8 +#define CALL_PATH_BLOCK_SIZE (1 << CALL_PATH_BLOCK_SHIFT) +#define CALL_PATH_BLOCK_MASK (CALL_PATH_BLOCK_SIZE - 1) + +struct call_path_block { + struct call_path cp[CALL_PATH_BLOCK_SIZE]; + struct list_head node; +}; + +/** + * struct call_path_root - root of all call paths. + * @call_path: root call path + * @blocks: list of blocks to store call paths + * @next: next free space + * @sz: number of spaces + */ +struct call_path_root { + struct call_path call_path; + struct list_head blocks; + size_t next; + size_t sz; +}; + +struct call_path_root *call_path_root__new(void); +void call_path_root__free(struct call_path_root *cpr); + +struct call_path *call_path__findnew(struct call_path_root *cpr, + struct call_path *parent, + struct symbol *sym, u64 ip, u64 ks); + +#endif diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 049438d51b9a..4fc607c130b8 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -23,6 +23,7 @@ #include "event.h" #include "util.h" #include "thread-stack.h" +#include "call-path.h" #include "db-export.h" struct deferred_export { diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 525eb49e7ba6..7bb859202249 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -41,6 +41,7 @@ #include "../thread-stack.h" #include "../trace-event.h" #include "../machine.h" +#include "../call-path.h" #include "thread_map.h" #include "cpumap.h" #include "stat.h" diff --git a/tools/perf/util/thread-stack.c b/tools/perf/util/thread-stack.c index 679688e70ae7..fc419a59c88b 100644 --- a/tools/perf/util/thread-stack.c +++ b/tools/perf/util/thread-stack.c @@ -22,31 +22,9 @@ #include "debug.h" #include "symbol.h" #include "comm.h" +#include "call-path.h" #include "thread-stack.h" -#define CALL_PATH_BLOCK_SHIFT 8 -#define CALL_PATH_BLOCK_SIZE (1 << CALL_PATH_BLOCK_SHIFT) -#define CALL_PATH_BLOCK_MASK (CALL_PATH_BLOCK_SIZE - 1) - -struct call_path_block { - struct call_path cp[CALL_PATH_BLOCK_SIZE]; - struct list_head node; -}; - -/** - * struct call_path_root - root of all call paths. - * @call_path: root call path - * @blocks: list of blocks to store call paths - * @next: next free space - * @sz: number of spaces - */ -struct call_path_root { - struct call_path call_path; - struct list_head blocks; - size_t next; - size_t sz; -}; - /** * struct call_return_processor - provides a call-back to consume call-return * information. @@ -335,108 +313,6 @@ void thread_stack__sample(struct thread *thread, struct ip_callchain *chain, chain->ips[i] = thread->ts->stack[thread->ts->cnt - i].ret_addr; } -static void call_path__init(struct call_path *cp, struct call_path *parent, - struct symbol *sym, u64 ip, bool in_kernel) -{ - cp->parent = parent; - cp->sym = sym; - cp->ip = sym ? 0 : ip; - cp->db_id = 0; - cp->in_kernel = in_kernel; - RB_CLEAR_NODE(&cp->rb_node); - cp->children = RB_ROOT; -} - -static struct call_path_root *call_path_root__new(void) -{ - struct call_path_root *cpr; - - cpr = zalloc(sizeof(struct call_path_root)); - if (!cpr) - return NULL; - call_path__init(&cpr->call_path, NULL, NULL, 0, false); - INIT_LIST_HEAD(&cpr->blocks); - return cpr; -} - -static void call_path_root__free(struct call_path_root *cpr) -{ - struct call_path_block *pos, *n; - - list_for_each_entry_safe(pos, n, &cpr->blocks, node) { - list_del(&pos->node); - free(pos); - } - free(cpr); -} - -static struct call_path *call_path__new(struct call_path_root *cpr, - struct call_path *parent, - struct symbol *sym, u64 ip, - bool in_kernel) -{ - struct call_path_block *cpb; - struct call_path *cp; - size_t n; - - if (cpr->next < cpr->sz) { - cpb = list_last_entry(&cpr->blocks, struct call_path_block, - node); - } else { - cpb = zalloc(sizeof(struct call_path_block)); - if (!cpb) - return NULL; - list_add_tail(&cpb->node, &cpr->blocks); - cpr->sz += CALL_PATH_BLOCK_SIZE; - } - - n = cpr->next++ & CALL_PATH_BLOCK_MASK; - cp = &cpb->cp[n]; - - call_path__init(cp, parent, sym, ip, in_kernel); - - return cp; -} - -static struct call_path *call_path__findnew(struct call_path_root *cpr, - struct call_path *parent, - struct symbol *sym, u64 ip, u64 ks) -{ - struct rb_node **p; - struct rb_node *node_parent = NULL; - struct call_path *cp; - bool in_kernel = ip >= ks; - - if (sym) - ip = 0; - - if (!parent) - return call_path__new(cpr, parent, sym, ip, in_kernel); - - p = &parent->children.rb_node; - while (*p != NULL) { - node_parent = *p; - cp = rb_entry(node_parent, struct call_path, rb_node); - - if (cp->sym == sym && cp->ip == ip) - return cp; - - if (sym < cp->sym || (sym == cp->sym && ip < cp->ip)) - p = &(*p)->rb_left; - else - p = &(*p)->rb_right; - } - - cp = call_path__new(cpr, parent, sym, ip, in_kernel); - if (!cp) - return NULL; - - rb_link_node(&cp->rb_node, node_parent, p); - rb_insert_color(&cp->rb_node, &parent->children); - - return cp; -} - struct call_return_processor * call_return_processor__new(int (*process)(struct call_return *cr, void *data), void *data) diff --git a/tools/perf/util/thread-stack.h b/tools/perf/util/thread-stack.h index e1528f1374c3..ec9beddfdbab 100644 --- a/tools/perf/util/thread-stack.h +++ b/tools/perf/util/thread-stack.h @@ -19,7 +19,6 @@ #include #include -#include struct thread; struct comm; @@ -30,6 +29,7 @@ struct call_return_processor; struct comm; struct perf_sample; struct addr_location; +struct call_path; /* * Call/Return flags. @@ -68,29 +68,6 @@ struct call_return { u32 flags; }; -/** - * struct call_path - node in list of calls leading to a function call. - * @parent: call path to the parent function call - * @sym: symbol of function called - * @ip: only if sym is null, the ip of the function - * @db_id: id used for db-export - * @in_kernel: whether function is a in the kernel - * @rb_node: node in parent's tree of called functions - * @children: tree of call paths of functions called - * - * In combination with the call_return structure, the call_path structure - * defines a context-sensitve call-graph. - */ -struct call_path { - struct call_path *parent; - struct symbol *sym; - u64 ip; - u64 db_id; - bool in_kernel; - struct rb_node rb_node; - struct rb_root children; -}; - int thread_stack__event(struct thread *thread, u32 flags, u64 from_ip, u64 to_ip, u16 insn_len, u64 trace_nr); void thread_stack__set_trace_nr(struct thread *thread, u64 trace_nr); -- cgit v1.2.3 From 2c15f5eb04e9e7e19a2c8be6b50c63a4c6062a44 Mon Sep 17 00:00:00 2001 From: Chris Phlipot Date: Thu, 28 Apr 2016 01:19:10 -0700 Subject: perf script: Expose usage of the callchain db export via the python api This change allows python scripts to be able to utilize the recent changes to the db export api allowing the export of call_paths derived from sampled callchains. These call paths are also now associated with the samples from which they were derived. - This feature is enabled by setting "perf_db_export_callchains" to true - When enabled, samples that have callchain information will have the callchains exported via call_path_table - The call_path_id field is added to sample_table to enable association of samples with the corresponding callchain stored in the call paths table. A call_path_id of 0 will be exported if there is no corresponding callchain. - When "perf_db_export_callchains" and "perf_db_export_calls" are both set to True, the call path root data structure will be shared. This prevents duplicating of data and call path ids that would result from building two separate call path trees in memory. - The call_return_processor structure definition was relocated to the header file to make its contents visible to db-export.c. This enables the sharing of call path trees between the two features, as mentioned above. This change is visible to python scripts using the python db export api. The change is backwards compatible with scripts written against the previous API, assuming that the scripts model the sample_table function after the one in export-to-postgresql.py script by allowing for additional arguments to be added in the future. ie. using *x as the final argument of the sample_table function. Signed-off-by: Chris Phlipot Acked-by: Adrian Hunter Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1461831551-12213-6-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- .../util/scripting-engines/trace-event-python.c | 35 ++++++++++++++++++++-- tools/perf/util/thread-stack.c | 13 -------- tools/perf/util/thread-stack.h | 14 ++++++++- 3 files changed, 46 insertions(+), 16 deletions(-) (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 7bb859202249..091bce67844c 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -682,7 +682,7 @@ static int python_export_sample(struct db_export *dbe, struct tables *tables = container_of(dbe, struct tables, dbe); PyObject *t; - t = tuple_new(21); + t = tuple_new(22); tuple_set_u64(t, 0, es->db_id); tuple_set_u64(t, 1, es->evsel->db_id); @@ -705,6 +705,7 @@ static int python_export_sample(struct db_export *dbe, tuple_set_u64(t, 18, es->sample->data_src); tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK); tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX)); + tuple_set_u64(t, 21, es->call_path_id); call_object(tables->sample_handler, t, "sample_table"); @@ -999,8 +1000,10 @@ static void set_table_handlers(struct tables *tables) { const char *perf_db_export_mode = "perf_db_export_mode"; const char *perf_db_export_calls = "perf_db_export_calls"; - PyObject *db_export_mode, *db_export_calls; + const char *perf_db_export_callchains = "perf_db_export_callchains"; + PyObject *db_export_mode, *db_export_calls, *db_export_callchains; bool export_calls = false; + bool export_callchains = false; int ret; memset(tables, 0, sizeof(struct tables)); @@ -1017,6 +1020,7 @@ static void set_table_handlers(struct tables *tables) if (!ret) return; + /* handle export calls */ tables->dbe.crp = NULL; db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls); if (db_export_calls) { @@ -1034,6 +1038,33 @@ static void set_table_handlers(struct tables *tables) Py_FatalError("failed to create calls processor"); } + /* handle export callchains */ + tables->dbe.cpr = NULL; + db_export_callchains = PyDict_GetItemString(main_dict, + perf_db_export_callchains); + if (db_export_callchains) { + ret = PyObject_IsTrue(db_export_callchains); + if (ret == -1) + handler_call_die(perf_db_export_callchains); + export_callchains = !!ret; + } + + if (export_callchains) { + /* + * Attempt to use the call path root from the call return + * processor, if the call return processor is in use. Otherwise, + * we allocate a new call path root. This prevents exporting + * duplicate call path ids when both are in use simultaniously. + */ + if (tables->dbe.crp) + tables->dbe.cpr = tables->dbe.crp->cpr; + else + tables->dbe.cpr = call_path_root__new(); + + if (!tables->dbe.cpr) + Py_FatalError("failed to create calls processor"); + } + tables->db_export_mode = true; /* * Reserve per symbol space for symbol->db_id via symbol__priv() diff --git a/tools/perf/util/thread-stack.c b/tools/perf/util/thread-stack.c index fc419a59c88b..825086aa9a08 100644 --- a/tools/perf/util/thread-stack.c +++ b/tools/perf/util/thread-stack.c @@ -25,19 +25,6 @@ #include "call-path.h" #include "thread-stack.h" -/** - * struct call_return_processor - provides a call-back to consume call-return - * information. - * @cpr: call path root - * @process: call-back that accepts call/return information - * @data: anonymous data for call-back - */ -struct call_return_processor { - struct call_path_root *cpr; - int (*process)(struct call_return *cr, void *data); - void *data; -}; - #define STACK_GROWTH 2048 /** diff --git a/tools/perf/util/thread-stack.h b/tools/perf/util/thread-stack.h index ec9beddfdbab..ad44c7944b8e 100644 --- a/tools/perf/util/thread-stack.h +++ b/tools/perf/util/thread-stack.h @@ -25,7 +25,6 @@ struct comm; struct ip_callchain; struct symbol; struct dso; -struct call_return_processor; struct comm; struct perf_sample; struct addr_location; @@ -68,6 +67,19 @@ struct call_return { u32 flags; }; +/** + * struct call_return_processor - provides a call-back to consume call-return + * information. + * @cpr: call path root + * @process: call-back that accepts call/return information + * @data: anonymous data for call-back + */ +struct call_return_processor { + struct call_path_root *cpr; + int (*process)(struct call_return *cr, void *data); + void *data; +}; + int thread_stack__event(struct thread *thread, u32 flags, u64 from_ip, u64 to_ip, u16 insn_len, u64 trace_nr); void thread_stack__set_trace_nr(struct thread *thread, u64 trace_nr); -- cgit v1.2.3 From aff633406ca2772554bad7b37f2dfbc409b6ea74 Mon Sep 17 00:00:00 2001 From: Chris Phlipot Date: Sat, 7 May 2016 02:17:00 -0700 Subject: perf script: Fix incorrect python db-export error message Fix the error message printed when attempting and failing to create the call path root incorrectly references the call return process. This change fixes the message to properly reference the failure to create the call path root. Signed-off-by: Chris Phlipot Cc: Adrian Hunter Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1462612620-25008-2-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/scripting-engines/trace-event-python.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 091bce67844c..1546b749a3a3 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -1062,7 +1062,7 @@ static void set_table_handlers(struct tables *tables) tables->dbe.cpr = call_path_root__new(); if (!tables->dbe.cpr) - Py_FatalError("failed to create calls processor"); + Py_FatalError("failed to create call path root"); } tables->db_export_mode = true; -- cgit v1.2.3 From 62665dff754a80e2fdd214ef2ed21abb2a7d03a2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 10 May 2016 12:33:52 -0300 Subject: perf scripting python: Use Py_FatalError instead of die() It probably is equivalent, but that seems to be the "pythonic" way of dieing? Anyway, one less die() in the tools/perf codebase. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Cc: Chris Phlipot Link: http://lkml.kernel.org/n/tip-nlzgepdv2818zs4e7faif9tu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/scripting-engines/trace-event-python.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 1546b749a3a3..73ee12d96c33 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -408,8 +408,11 @@ static void python_process_tracepoint(struct perf_sample *sample, if (!t) Py_FatalError("couldn't create Python tuple"); - if (!event) - die("ug! no event found for type %d", (int)evsel->attr.config); + if (!event) { + snprintf(handler_name, sizeof(handler_name), + "ug! no event found for type %" PRIu64, (u64)evsel->attr.config); + Py_FatalError(handler_name); + } pid = raw_field_value(event, "common_pid", data); -- cgit v1.2.3 From b5d8bbe8601a45b908f7952707bbb30bf221ca3b Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 11 May 2016 22:51:59 +0900 Subject: perf tools: Use SBUILD_ID_SIZE where applicable Use the existing SBUILD_ID_SIZE macro instead of the equivalent BUILD_ID_SIZE * 2 + 1 expression for allocating a buffer for build-id strings. Signed-off-by: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Brendan Gregg Cc: Hemant Kumar Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20160511135159.23943.57120.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 2 +- tools/perf/util/dso.c | 4 ++-- tools/perf/util/header.c | 2 +- tools/perf/util/map.c | 2 +- tools/perf/util/scripting-engines/trace-event-python.c | 2 +- tools/perf/util/symbol.c | 2 +- 6 files changed, 7 insertions(+), 7 deletions(-) (limited to 'tools/perf/util/scripting-engines/trace-event-python.c') diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index d4b3d034c503..4db73d5a0dbc 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1138,7 +1138,7 @@ fallback: if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && !dso__is_kcore(dso)) { - char bf[BUILD_ID_SIZE * 2 + 16] = " with build id "; + char bf[SBUILD_ID_SIZE + 15] = " with build id "; char *build_id_msg = NULL; if (dso->annotate_warned) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 8e6395439ca0..3357479082ca 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -38,7 +38,7 @@ int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type type, char *root_dir, char *filename, size_t size) { - char build_id_hex[BUILD_ID_SIZE * 2 + 1]; + char build_id_hex[SBUILD_ID_SIZE]; int ret = 0; size_t len; @@ -1301,7 +1301,7 @@ size_t __dsos__fprintf(struct list_head *head, FILE *fp) size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) { - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + char sbuild_id[SBUILD_ID_SIZE]; build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); return fprintf(fp, "%s", sbuild_id); diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index c6000d44f98c..08852dde1378 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1474,7 +1474,7 @@ static int __event_process_build_id(struct build_id_event *bev, dso = machine__findnew_dso(machine, filename); if (dso != NULL) { - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + char sbuild_id[SBUILD_ID_SIZE]; dso__set_build_id(dso, &bev->build_id); diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 02c31865648b..b19bcd3b7128 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -289,7 +289,7 @@ int map__load(struct map *map, symbol_filter_t filter) nr = dso__load(map->dso, map, filter); if (nr < 0) { if (map->dso->has_build_id) { - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + char sbuild_id[SBUILD_ID_SIZE]; build_id__sprintf(map->dso->build_id, sizeof(map->dso->build_id), diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 73ee12d96c33..ff134700bf30 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -618,7 +618,7 @@ static int python_export_dso(struct db_export *dbe, struct dso *dso, struct machine *machine) { struct tables *tables = container_of(dbe, struct tables, dbe); - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + char sbuild_id[SBUILD_ID_SIZE]; PyObject *t; build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 21af8e8891fe..4ada5a44aaf2 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1642,7 +1642,7 @@ static int find_matching_kcore(struct map *map, char *dir, size_t dir_sz) static char *dso__find_kallsyms(struct dso *dso, struct map *map) { u8 host_build_id[BUILD_ID_SIZE]; - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + char sbuild_id[SBUILD_ID_SIZE]; bool is_host = false; char path[PATH_MAX]; -- cgit v1.2.3