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| author | David Howells <dhowells@redhat.com> | 2024-12-16 23:41:05 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-12-21 00:34:05 +0300 |
| commit | bcb33f79e15d0e4dc4b86106ceb01d64bfab9e35 (patch) | |
| tree | 256b60269efce77e4e22098be88b3fe022970c3c | |
| parent | 30f878fa0fac932ea811303aacf73c6a44b12bd2 (diff) | |
| download | linux-bcb33f79e15d0e4dc4b86106ceb01d64bfab9e35.tar.xz | |
cachefiles: Add some subrequest tracepoints
Add some tracepoints into the cachefiles write paths.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20241216204124.3752367-16-dhowells@redhat.com
cc: netfs@lists.linux.dev
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/cachefiles/io.c | 4 | ||||
| -rw-r--r-- | include/trace/events/netfs.h | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/fs/cachefiles/io.c b/fs/cachefiles/io.c index 6a821a959b59..92058ae43488 100644 --- a/fs/cachefiles/io.c +++ b/fs/cachefiles/io.c @@ -13,6 +13,7 @@ #include <linux/falloc.h> #include <linux/sched/mm.h> #include <trace/events/fscache.h> +#include <trace/events/netfs.h> #include "internal.h" struct cachefiles_kiocb { @@ -366,6 +367,7 @@ static int cachefiles_write(struct netfs_cache_resources *cres, if (!fscache_wait_for_operation(cres, FSCACHE_WANT_WRITE)) { if (term_func) term_func(term_func_priv, -ENOBUFS, false); + trace_netfs_sreq(term_func_priv, netfs_sreq_trace_cache_nowrite); return -ENOBUFS; } @@ -695,6 +697,7 @@ static void cachefiles_issue_write(struct netfs_io_subrequest *subreq) iov_iter_truncate(&subreq->io_iter, len); } + trace_netfs_sreq(subreq, netfs_sreq_trace_cache_prepare); cachefiles_begin_secure(cache, &saved_cred); ret = __cachefiles_prepare_write(object, cachefiles_cres_file(cres), &start, &len, len, true); @@ -704,6 +707,7 @@ static void cachefiles_issue_write(struct netfs_io_subrequest *subreq) return; } + trace_netfs_sreq(subreq, netfs_sreq_trace_cache_write); cachefiles_write(&subreq->rreq->cache_resources, subreq->start, &subreq->io_iter, netfs_write_subrequest_terminated, subreq); diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h index 2dfc9f716e3b..02f6e179b7bc 100644 --- a/include/trace/events/netfs.h +++ b/include/trace/events/netfs.h @@ -74,6 +74,9 @@ #define netfs_sreq_traces \ EM(netfs_sreq_trace_add_donations, "+DON ") \ EM(netfs_sreq_trace_added, "ADD ") \ + EM(netfs_sreq_trace_cache_nowrite, "CA-NW") \ + EM(netfs_sreq_trace_cache_prepare, "CA-PR") \ + EM(netfs_sreq_trace_cache_write, "CA-WR") \ EM(netfs_sreq_trace_clear, "CLEAR") \ EM(netfs_sreq_trace_discard, "DSCRD") \ EM(netfs_sreq_trace_donate_to_prev, "DON-P") \ |