From e92ce12ed6a46302f64269d2d406cf04525f0a8f Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 31 Oct 2014 16:51:38 +0900 Subject: perf tools: Add gzip decompression support for kernel module Now my Archlinux box shows module symbols correctly. Before: $ perf report --stdio Failed to open /tmp/perf-3477.map, continuing without symbols no symbols found in /usr/bin/date, maybe install a debug package? No kallsyms or vmlinux with build-id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 was found [drm] with build id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 not found, continuing without symbols No kallsyms or vmlinux with build-id edd931629094b660ca9dec09a1b635c8d87aa2ee was found [jbd2] with build id edd931629094b660ca9dec09a1b635c8d87aa2ee not found, continuing without symbols No kallsyms or vmlinux with build-id a7b1eada671c34933e5610bb920b2ca4945a82c3 was found [ext4] with build id a7b1eada671c34933e5610bb920b2ca4945a82c3 not found, continuing without symbols No kallsyms or vmlinux with build-id d69511fa3e5840e770336ef45b06c83fef8d74e3 was found [scsi_mod] with build id d69511fa3e5840e770336ef45b06c83fef8d74e3 not found, continuing without symbols No kallsyms or vmlinux with build-id af0430af13461af058770ee9b87afc07922c2e77 was found [libata] with build id af0430af13461af058770ee9b87afc07922c2e77 not found, continuing without symbols No kallsyms or vmlinux with build-id aaeedff8160ce631a5f0333591c6ff291201d29f was found [libahci] with build id aaeedff8160ce631a5f0333591c6ff291201d29f not found, continuing without symbols No kallsyms or vmlinux with build-id c57907712becaf662dc4981824bb372c0441d605 was found [mac80211] with build id c57907712becaf662dc4981824bb372c0441d605 not found, continuing without symbols No kallsyms or vmlinux with build-id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f was found [iwldvm] with build id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f not found, continuing without symbols No kallsyms or vmlinux with build-id 2d86086bf136bf374a2f029cf85a48194f9b950b was found [cfg80211] with build id 2d86086bf136bf374a2f029cf85a48194f9b950b not found, continuing without symbols No kallsyms or vmlinux with build-id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 was found [iwlwifi] with build id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 not found, continuing without symbols ... # # Overhead Command Shared Object Symbol # ........ ............... ....................... ........................................................ # 0.03% swapper [ext4] [k] 0x000000000000fe2e 0.03% swapper [kernel.kallsyms] [k] account_entity_enqueue 0.03% swapper [ext4] [k] 0x000000000000fc2b 0.03% irq/50-iwlwifi [iwlwifi] [k] 0x000000000000200b 0.03% swapper [kernel.kallsyms] [k] ktime_add_safe 0.03% swapper [kernel.kallsyms] [k] elv_completed_request 0.03% swapper [libata] [k] 0x0000000000003997 0.03% swapper [libahci] [k] 0x0000000000001f25 0.03% swapper [kernel.kallsyms] [k] rb_next 0.03% swapper [kernel.kallsyms] [k] blk_finish_request 0.03% swapper [ext4] [k] 0x0000000000010248 0.00% perf [kernel.kallsyms] [k] native_write_msr_safe After: $ perf report --stdio Failed to open /tmp/perf-3477.map, continuing without symbols no symbols found in /usr/bin/tr, maybe install a debug package? ... # # Overhead Command Shared Object Symbol # ........ ............... ........................... ...................................................... # 0.04% kworker/u16:3 [ext4] [k] ext4_read_block_bitmap 0.03% kworker/u16:0 [mac80211] [k] ieee80211_sta_reset_beacon_monitor 0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_get_bssid 0.02% firefox [e1000e] [k] __ew32_prepare 0.02% swapper [libahci] [k] ahci_handle_port_interrupt 0.02% emacs libglib-2.0.so.0.4000.0 [.] g_mutex_unlock 0.02% swapper [e1000e] [k] e1000_clean_tx_irq 0.02% dwm [kernel.kallsyms] [k] __schedule 0.02% gnome-terminal- [vdso] [.] __vdso_clock_gettime 0.02% swapper [e1000e] [k] e1000_alloc_rx_buffers 0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_rx 0.01% firefox [vdso] [.] __vdso_gettimeofday 0.01% irq/50-iwlwifi [iwlwifi] [k] iwl_pcie_rxq_restock.part.13 Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Paul Mackerras Cc: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Stephane Eranian Link: http://lkml.kernel.org/r/87h9yexshi.fsf@sejong.aot.lge.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/util.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools/perf/util/util.h') diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 80bfdaa0e2a4..7dc44cfe25b3 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -351,4 +351,9 @@ void mem_bswap_32(void *src, int byte_size); const char *get_filename_for_perf_kvm(void); bool find_process(const char *name); + +#ifdef HAVE_ZLIB_SUPPORT +int gzip_decompress_to_file(const char *input, int output_fd); +#endif + #endif /* GIT_COMPAT_UTIL_H */ -- cgit v1.2.3 From 73c5d224b4514575abe0dd89b43adbde937429c3 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 7 Nov 2014 22:57:56 +0900 Subject: perf build-id: Move disable_buildid_cache() to util/build-id.c Also move static variable no_buildid_cache and check it in the perf_session_cache_build_ids(). Signed-off-by: Namhyung Kim Cc: Aravinda Prasad Cc: Brendan Gregg Cc: Hemant Kumar Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Oleg Nesterov Cc: Pekka Enberg Cc: Peter Zijlstra Cc: Srikar Dronamraju Cc: Vasant Hegde Cc: systemtap@sourceware.org Link: http://lkml.kernel.org/r/1415368677-3794-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/build-id.c | 11 +++++++++++ tools/perf/util/build-id.h | 1 + tools/perf/util/header.c | 10 +--------- tools/perf/util/util.h | 1 - 4 files changed, 13 insertions(+), 10 deletions(-) (limited to 'tools/perf/util/util.h') diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index dd2a3e52ada1..e8d79e5bfaf7 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -18,6 +18,9 @@ #include "header.h" #include "vdso.h" + +static bool no_buildid_cache; + int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused, union perf_event *event, struct perf_sample *sample, @@ -251,6 +254,11 @@ int dsos__hit_all(struct perf_session *session) return 0; } +void disable_buildid_cache(void) +{ + no_buildid_cache = true; +} + int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, const char *name, bool is_kallsyms, bool is_vdso) { @@ -404,6 +412,9 @@ int perf_session__cache_build_ids(struct perf_session *session) int ret; char debugdir[PATH_MAX]; + if (no_buildid_cache) + return 0; + snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir); if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h index 666a3bd4f64e..8236319514d5 100644 --- a/tools/perf/util/build-id.h +++ b/tools/perf/util/build-id.h @@ -25,5 +25,6 @@ int perf_session__cache_build_ids(struct perf_session *session); int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, const char *name, bool is_kallsyms, bool is_vdso); int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir); +void disable_buildid_cache(void); #endif diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 05fab7a188dc..b20e40c74468 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -24,8 +24,6 @@ #include "build-id.h" #include "data.h" -static bool no_buildid_cache = false; - static u32 header_argc; static const char **header_argv; @@ -191,8 +189,7 @@ static int write_build_id(int fd, struct perf_header *h, pr_debug("failed to write buildid table\n"); return err; } - if (!no_buildid_cache) - perf_session__cache_build_ids(session); + perf_session__cache_build_ids(session); return 0; } @@ -2791,8 +2788,3 @@ int perf_event__process_build_id(struct perf_tool *tool __maybe_unused, session); return 0; } - -void disable_buildid_cache(void) -{ - no_buildid_cache = true; -} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 7dc44cfe25b3..76d23d83eae5 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -154,7 +154,6 @@ extern void set_die_routine(void (*routine)(const char *err, va_list params) NOR extern int prefixcmp(const char *str, const char *prefix); extern void set_buildid_dir(void); -extern void disable_buildid_cache(void); static inline const char *skip_prefix(const char *str, const char *prefix) { -- cgit v1.2.3