[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v4 08/13] tools/xenstore: add accounting trace support
Add a new trace switch "acc" and the related trace calls. The "acc" switch is off per default. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx> --- tools/xenstore/xenstored_core.c | 2 +- tools/xenstore/xenstored_core.h | 1 + tools/xenstore/xenstored_domain.c | 10 ++++++++++ 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c index 67aa7c1578..bd816ce709 100644 --- a/tools/xenstore/xenstored_core.c +++ b/tools/xenstore/xenstored_core.c @@ -2746,7 +2746,7 @@ static void set_quota(const char *arg, bool soft) /* Sorted by bit values of TRACE_* flags. Flag is (1u << index). */ const char *const trace_switches[] = { - "obj", "io", "wrl", + "obj", "io", "wrl", "acc", NULL }; diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_core.h index 1f811f38cb..3e0734a6c6 100644 --- a/tools/xenstore/xenstored_core.h +++ b/tools/xenstore/xenstored_core.h @@ -302,6 +302,7 @@ extern unsigned int trace_flags; #define TRACE_OBJ 0x00000001 #define TRACE_IO 0x00000002 #define TRACE_WRL 0x00000004 +#define TRACE_ACC 0x00000008 extern const char *const trace_switches[]; int set_trace_switch(const char *arg); diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_domain.c index 22836ae881..1caa60bb14 100644 --- a/tools/xenstore/xenstored_domain.c +++ b/tools/xenstore/xenstored_domain.c @@ -540,6 +540,12 @@ static struct domain *find_domain_by_domid(unsigned int domid) return (d && d->introduced) ? d : NULL; } +#define trace_acc(...) \ +do { \ + if (trace_flags & TRACE_ACC) \ + trace("acc: " __VA_ARGS__); \ +} while (0) + int acc_fix_domains(struct list_head *head, bool chk_quota, bool update) { struct changed_domain *cd; @@ -603,6 +609,8 @@ static int acc_add_changed_dom(const void *ctx, struct list_head *head, return 0; errno = 0; + trace_acc("local change domid %u: what=%u %d add %d\n", domid, what, + cd->acc[what], val); cd->acc[what] += val; return cd->acc[what]; @@ -1114,6 +1122,8 @@ static int domain_acc_add(struct connection *conn, unsigned int domid, return domain_acc_add_valid(d, what, ret); } + trace_acc("global change domid %u: what=%u %u add %d\n", domid, what, + d->acc[what], add); d->acc[what] = domain_acc_add_valid(d, what, add); return d->acc[what]; -- 2.35.3
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