From 17c257e867be1880eaf7c1b9dac286086d75d1ec Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 16 May 2018 16:27:14 -0300 Subject: tools lib api: Unexport 'tracing_path' variable One should use tracing_path_mount() instead, so more things get done lazily instead of at every 'perf' tool call startup. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-fci4yll35idd9yuslp67vqc2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/tracing_path.h | 1 - 1 file changed, 1 deletion(-) (limited to 'tools/lib/api/fs/tracing_path.h') diff --git a/tools/lib/api/fs/tracing_path.h b/tools/lib/api/fs/tracing_path.h index 0066f06cc381..1b65decedfc0 100644 --- a/tools/lib/api/fs/tracing_path.h +++ b/tools/lib/api/fs/tracing_path.h @@ -4,7 +4,6 @@ #include -extern char tracing_path[]; extern char tracing_events_path[]; void tracing_path_set(const char *mountpoint); -- cgit From 40c3c0c9ac2befd28df3844dc9efdbadee3af5c0 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 16 May 2018 16:42:26 -0300 Subject: tools lib api fs tracing_path: Introduce get/put_events_file() helpers To make reading events files a tad more compact than with get_tracing_files("events/foo"). Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-do6xgtwpmfl8zjs1euxsd2du@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/tracing_path.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools/lib/api/fs/tracing_path.h') diff --git a/tools/lib/api/fs/tracing_path.h b/tools/lib/api/fs/tracing_path.h index 1b65decedfc0..3b32fb439f12 100644 --- a/tools/lib/api/fs/tracing_path.h +++ b/tools/lib/api/fs/tracing_path.h @@ -12,5 +12,10 @@ const char *tracing_path_mount(void); char *get_tracing_file(const char *name); void put_tracing_file(char *file); +char *get_events_file(const char *name); +void put_events_file(char *file); + +#define zput_events_file(ptr) ({ free(*ptr); *ptr = NULL; }) + int tracing_path__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name); #endif /* __API_FS_TRACING_PATH_H */ -- cgit From 7014e0e3bf9b0d0b6221eb7d2f8a1f690423dd73 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 17 May 2018 14:42:39 -0300 Subject: tools lib api fs tracing_path: Introduce opendir() method That takes care of using the right call to get the tracing_path directory, the one that will end up calling tracing_path_set() to figure out where tracefs is mounted. One more step in doing just lazy reading of system structures to reduce the number of operations done unconditionaly at 'perf' start. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-42zzi0f274909bg9mxzl81bu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/tracing_path.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools/lib/api/fs/tracing_path.h') diff --git a/tools/lib/api/fs/tracing_path.h b/tools/lib/api/fs/tracing_path.h index 3b32fb439f12..904d085b2ae7 100644 --- a/tools/lib/api/fs/tracing_path.h +++ b/tools/lib/api/fs/tracing_path.h @@ -3,9 +3,12 @@ #define __API_FS_TRACING_PATH_H #include +#include extern char tracing_events_path[]; +DIR *tracing_events__opendir(void); + void tracing_path_set(const char *mountpoint); const char *tracing_path_mount(void); -- cgit From 789e465058352122023e4fa7de8dcf5c513e0b0b Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 17 May 2018 14:51:23 -0300 Subject: tools lib api fs tracing_path: Make tracing_events_path private Not anymore accessed outside this library, keep it private. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-wg1m07flfrg1rm06jjzie8si@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/tracing_path.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools/lib/api/fs/tracing_path.h') diff --git a/tools/lib/api/fs/tracing_path.h b/tools/lib/api/fs/tracing_path.h index 904d085b2ae7..a19136b086dc 100644 --- a/tools/lib/api/fs/tracing_path.h +++ b/tools/lib/api/fs/tracing_path.h @@ -5,8 +5,6 @@ #include #include -extern char tracing_events_path[]; - DIR *tracing_events__opendir(void); void tracing_path_set(const char *mountpoint); -- cgit