diff options
| author | Igor Nabirushkin <inabirushkin@nvidia.com> | 2013-09-08 10:43:36 +0400 |
|---|---|---|
| committer | Riham Haidar <rhaidar@nvidia.com> | 2013-09-19 13:00:19 -0700 |
| commit | b02d2badfa862bd02e346efd0cd286a452b08167 (patch) | |
| tree | de9599e19f9916e1b40bccabf59fdeea19efe4e2 /drivers | |
| parent | 530f877ff879a663eddd25c81883880bcd2b8c48 (diff) | |
misc: tegra-profiler: remove excess callchains
Tegra Profiler: improve performance by removing
unnecessary callchains
Bug 1364258
Change-Id: Ib2b196660fbaecb9d11af65102145727aa22d110
Signed-off-by: Igor Nabirushkin <inabirushkin@nvidia.com>
Reviewed-on: http://git-master/r/272093
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Tested-by: Maxim Morin <mmorin@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/tegra-profiler/hrt.c | 21 | ||||
| -rw-r--r-- | drivers/misc/tegra-profiler/version.h | 2 |
2 files changed, 13 insertions, 10 deletions
diff --git a/drivers/misc/tegra-profiler/hrt.c b/drivers/misc/tegra-profiler/hrt.c index 6a9c39ffd05c..fdfbb96f5910 100644 --- a/drivers/misc/tegra-profiler/hrt.c +++ b/drivers/misc/tegra-profiler/hrt.c @@ -253,6 +253,9 @@ static void read_source(struct quadd_event_source_interface *source, return; } + if (atomic_read(&cpu_ctx->nr_active) == 0) + return; + if (user_mode(regs) && hrt.quadd_ctx->param.backtrace) { callchain_nr = quadd_get_user_callchain(regs, callchain_data); if (callchain_nr > 0) { @@ -275,20 +278,20 @@ static void read_source(struct quadd_event_source_interface *source, !quadd_ctx->collect_kernel_ips) record_data.sample.ip = 0; - record_data.sample.callchain_nr = callchain_nr; - if (pid > 0) { record_data.sample.pid = pid; - quadd_put_sample(&record_data, extra_data, - extra_length); } else { t_data = &cpu_ctx->active_thread; + record_data.sample.pid = t_data->pid; + } - if (atomic_read(&cpu_ctx->nr_active) > 0) { - record_data.sample.pid = t_data->pid; - quadd_put_sample(&record_data, extra_data, - extra_length); - } + if (i == 0) { + record_data.sample.callchain_nr = callchain_nr; + quadd_put_sample(&record_data, extra_data, + extra_length); + } else { + record_data.sample.callchain_nr = 0; + quadd_put_sample(&record_data, NULL, 0); } } } diff --git a/drivers/misc/tegra-profiler/version.h b/drivers/misc/tegra-profiler/version.h index 838c1f4d56f4..3c03b2978711 100644 --- a/drivers/misc/tegra-profiler/version.h +++ b/drivers/misc/tegra-profiler/version.h @@ -18,7 +18,7 @@ #ifndef __QUADD_VERSION_H #define __QUADD_VERSION_H -#define QUADD_MODULE_VERSION "1.29" +#define QUADD_MODULE_VERSION "1.30" #define QUADD_MODULE_BRANCH "Dev" #endif /* __QUADD_VERSION_H */ |