diff options
| author | Baolin Wang <baolin.wang@linaro.org> | 2016-03-31 11:16:27 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-05-02 10:33:11 +0200 |
| commit | 7962fc376f603547b130c0fd7932ac6e9df4ee8b (patch) | |
| tree | 4665dade871f9f86b6921dc1935f2e5e4901b6ec /drivers/mmc/core | |
| parent | 1ca4d3596e419d65bbc6a1276b3f569c6c83510c (diff) | |
| download | linux-7962fc376f603547b130c0fd7932ac6e9df4ee8b.tar.bz2 | |
mmc: core: Provide tracepoints for request processing
This patch provides some tracepoints for the lifecycle of a mmc request
from starting to completion to help with performance analysis of MMC
subsystem.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 41b1e761965f..f80b3ab3266a 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -36,6 +36,9 @@ #include <linux/mmc/sd.h> #include <linux/mmc/slot-gpio.h> +#define CREATE_TRACE_POINTS +#include <trace/events/mmc.h> + #include "core.h" #include "bus.h" #include "host.h" @@ -140,6 +143,8 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) cmd->retries = 0; } + trace_mmc_request_done(host, mrq); + if (err && cmd->retries && !mmc_card_removed(host->card)) { /* * Request starter must handle retries - see @@ -215,6 +220,8 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) } } + trace_mmc_request_start(host, mrq); + host->ops->request(host, mrq); } |