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Differential D14212 Diff 38958 sys/geom/cache/g_cache.c

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sys/geom/cache/g_cache.c

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SYSCTL_DECL(_kern_geom); SYSCTL_DECL(_kern_geom);
static SYSCTL_NODE(_kern_geom, OID_AUTO, cache, CTLFLAG_RW, 0, static SYSCTL_NODE(_kern_geom, OID_AUTO, cache, CTLFLAG_RW, 0,
"GEOM_CACHE stuff"); "GEOM_CACHE stuff");
static u_int g_cache_debug = 0; static u_int g_cache_debug = 0;
SYSCTL_UINT(_kern_geom_cache, OID_AUTO, debug, CTLFLAG_RW, &g_cache_debug, 0, SYSCTL_UINT(_kern_geom_cache, OID_AUTO, debug, CTLFLAG_RW, &g_cache_debug, 0,
"Debug level"); "Debug level");
static u_int g_cache_enable = 1; static u_int g_cache_enable = 1;
SYSCTL_UINT(_kern_geom_cache, OID_AUTO, enable, CTLFLAG_RW, &g_cache_enable, 0, SYSCTL_UINT(_kern_geom_cache, OID_AUTO, enable, CTLFLAG_RW, &g_cache_enable, 0,
""); "Enable cache");
static u_int g_cache_timeout = 10; static u_int g_cache_timeout = 10;
SYSCTL_UINT(_kern_geom_cache, OID_AUTO, timeout, CTLFLAG_RW, &g_cache_timeout, SYSCTL_UINT(_kern_geom_cache, OID_AUTO, timeout, CTLFLAG_RW, &g_cache_timeout,
0, ""); 0, "Cache timeout in seconds");
static u_int g_cache_idletime = 5; static u_int g_cache_idletime = 5;
SYSCTL_UINT(_kern_geom_cache, OID_AUTO, idletime, CTLFLAG_RW, &g_cache_idletime, SYSCTL_UINT(_kern_geom_cache, OID_AUTO, idletime, CTLFLAG_RW, &g_cache_idletime,
0, ""); 0, "Maximum time in seconds before idle cache entries are cleared");
static u_int g_cache_used_lo = 5; static u_int g_cache_used_lo = 5;
static u_int g_cache_used_hi = 20; static u_int g_cache_used_hi = 20;
static int static int
sysctl_handle_pct(SYSCTL_HANDLER_ARGS) sysctl_handle_pct(SYSCTL_HANDLER_ARGS)
{ {
u_int val = *(u_int *)arg1; u_int val = *(u_int *)arg1;
int error; int error;
error = sysctl_handle_int(oidp, &val, 0, req); error = sysctl_handle_int(oidp, &val, 0, req);
if (error || !req->newptr) if (error || !req->newptr)
return (error); return (error);
if (val > 100) if (val > 100)
return (EINVAL); return (EINVAL);
if ((arg1 == &g_cache_used_lo && val > g_cache_used_hi) || if ((arg1 == &g_cache_used_lo && val > g_cache_used_hi) ||
(arg1 == &g_cache_used_hi && g_cache_used_lo > val)) (arg1 == &g_cache_used_hi && g_cache_used_lo > val))
return (EINVAL); return (EINVAL);
*(u_int *)arg1 = val; *(u_int *)arg1 = val;
return (0); return (0);
} }
SYSCTL_PROC(_kern_geom_cache, OID_AUTO, used_lo, CTLTYPE_UINT|CTLFLAG_RW, SYSCTL_PROC(_kern_geom_cache, OID_AUTO, used_lo, CTLTYPE_UINT|CTLFLAG_RW,
&g_cache_used_lo, 0, sysctl_handle_pct, "IU", ""); &g_cache_used_lo, 0, sysctl_handle_pct, "IU",
"Minimum cache entries");
SYSCTL_PROC(_kern_geom_cache, OID_AUTO, used_hi, CTLTYPE_UINT|CTLFLAG_RW, SYSCTL_PROC(_kern_geom_cache, OID_AUTO, used_hi, CTLTYPE_UINT|CTLFLAG_RW,
&g_cache_used_hi, 0, sysctl_handle_pct, "IU", ""); &g_cache_used_hi, 0, sysctl_handle_pct, "IU",
"Maximum cache entries");
static int g_cache_destroy(struct g_cache_softc *sc, boolean_t force); static int g_cache_destroy(struct g_cache_softc *sc, boolean_t force);
static g_ctl_destroy_geom_t g_cache_destroy_geom; static g_ctl_destroy_geom_t g_cache_destroy_geom;
static g_taste_t g_cache_taste; static g_taste_t g_cache_taste;
static g_ctl_req_t g_cache_config; static g_ctl_req_t g_cache_config;
static g_dumpconf_t g_cache_dumpconf; static g_dumpconf_t g_cache_dumpconf;
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