On Fri, 2013-02-15 at 10:21 -0800, Greg KH wrote:
> On Fri, Feb 15, 2013 at 12:53:00PM +0200, Robert Berger wrote:
> > Signed-off-by: Robert Berger <rber....@reliableembeddedsystems.com>
[]
> This patch fails to apply to my tree for some reason, can you redo it
> against the latest linux-next tree and resend?
Perhaps it'd be better to use KBUILD_MODNAME
all the time instead of adding the prefix.
Also, to me mixing "ramster: " and "zcache: "
for the prefixes is odd. Just using zcache all
the time would be simpler, so remove namestr too.
Maybe:
---
drivers/staging/zcache/zcache-main.c | 173 ++++++++++++++++-------------------
1 file changed, 79 insertions(+), 94 deletions(-)
diff --git a/drivers/staging/zcache/zcache-main.c
b/drivers/staging/zcache/zcache-main.c
index 4456ab4..2b421f4 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -12,6 +12,8 @@
* be "reclaimed" efficiently.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/cpu.h>
#include <linux/highmem.h>
@@ -67,7 +69,6 @@ static int disable_cleancache __read_mostly;
static int disable_frontswap __read_mostly;
static int disable_frontswap_ignore_nonactive __read_mostly;
static int disable_cleancache_ignore_nonactive __read_mostly;
-static char *namestr __read_mostly = "zcache";
#define ZCACHE_GFP_MASK \
(__GFP_FS | __GFP_NORETRY | __GFP_NOWARN | __GFP_NOMEMALLOC)
@@ -262,64 +263,56 @@ static int zcache_debugfs_init(void)
/* developers can call this in case of ooms, e.g. to find memory leaks */
void zcache_dump(void)
{
- pr_info("zcache: obj_count=%lu\n", zcache_obj_count);
- pr_info("zcache: obj_count_max=%lu\n", zcache_obj_count_max);
- pr_info("zcache: objnode_count=%lu\n", zcache_objnode_count);
- pr_info("zcache: objnode_count_max=%lu\n", zcache_objnode_count_max);
- pr_info("zcache: flush_total=%lu\n", zcache_flush_total);
- pr_info("zcache: flush_found=%lu\n", zcache_flush_found);
- pr_info("zcache: flobj_total=%lu\n", zcache_flobj_total);
- pr_info("zcache: flobj_found=%lu\n", zcache_flobj_found);
- pr_info("zcache: failed_eph_puts=%lu\n", zcache_failed_eph_puts);
- pr_info("zcache: failed_pers_puts=%lu\n", zcache_failed_pers_puts);
- pr_info("zcache: failed_get_free_pages=%lu\n",
- zcache_failed_getfreepages);
- pr_info("zcache: failed_alloc=%lu\n", zcache_failed_alloc);
- pr_info("zcache: put_to_flush=%lu\n", zcache_put_to_flush);
- pr_info("zcache: compress_poor=%lu\n", zcache_compress_poor);
- pr_info("zcache: mean_compress_poor=%lu\n",
- zcache_mean_compress_poor);
- pr_info("zcache: eph_ate_tail=%lu\n", zcache_eph_ate_tail);
- pr_info("zcache: eph_ate_tail_failed=%lu\n",
- zcache_eph_ate_tail_failed);
- pr_info("zcache: pers_ate_eph=%lu\n", zcache_pers_ate_eph);
- pr_info("zcache: pers_ate_eph_failed=%lu\n",
- zcache_pers_ate_eph_failed);
- pr_info("zcache: evicted_eph_zpages=%lu\n", zcache_evicted_eph_zpages);
- pr_info("zcache: evicted_eph_pageframes=%lu\n",
- zcache_evicted_eph_pageframes);
- pr_info("zcache: eph_pageframes=%lu\n", zcache_eph_pageframes);
- pr_info("zcache: eph_pageframes_max=%lu\n", zcache_eph_pageframes_max);
- pr_info("zcache: pers_pageframes=%lu\n", zcache_pers_pageframes);
- pr_info("zcache: pers_pageframes_max=%lu\n",
- zcache_pers_pageframes_max);
- pr_info("zcache: eph_zpages=%lu\n", zcache_eph_zpages);
- pr_info("zcache: eph_zpages_max=%lu\n", zcache_eph_zpages_max);
- pr_info("zcache: pers_zpages=%lu\n", zcache_pers_zpages);
- pr_info("zcache: pers_zpages_max=%lu\n", zcache_pers_zpages_max);
- pr_info("zcache: last_active_file_pageframes=%lu\n",
- zcache_last_active_file_pageframes);
- pr_info("zcache: last_inactive_file_pageframes=%lu\n",
- zcache_last_inactive_file_pageframes);
- pr_info("zcache: last_active_anon_pageframes=%lu\n",
- zcache_last_active_anon_pageframes);
- pr_info("zcache: last_inactive_anon_pageframes=%lu\n",
- zcache_last_inactive_anon_pageframes);
- pr_info("zcache: eph_nonactive_puts_ignored=%lu\n",
- zcache_eph_nonactive_puts_ignored);
- pr_info("zcache: pers_nonactive_puts_ignored=%lu\n",
- zcache_pers_nonactive_puts_ignored);
- pr_info("zcache: eph_zbytes=%llu\n",
- (unsigned long long)zcache_eph_zbytes);
- pr_info("zcache: eph_zbytes_max=%llu\n",
- (unsigned long long)zcache_eph_zbytes_max);
- pr_info("zcache: pers_zbytes=%llu\n",
- (unsigned long long)zcache_pers_zbytes);
- pr_info("zcache: pers_zbytes_max=%llu\n",
- (unsigned long long)zcache_pers_zbytes_max);
- pr_info("zcache: outstanding_writeback_pages=%lu\n",
- zcache_outstanding_writeback_pages);
- pr_info("zcache: writtenback_pages=%lu\n", zcache_writtenback_pages);
+ pr_info("obj_count=%lu\n", zcache_obj_count);
+ pr_info("obj_count_max=%lu\n", zcache_obj_count_max);
+ pr_info("objnode_count=%lu\n", zcache_objnode_count);
+ pr_info("objnode_count_max=%lu\n", zcache_objnode_count_max);
+ pr_info("flush_total=%lu\n", zcache_flush_total);
+ pr_info("flush_found=%lu\n", zcache_flush_found);
+ pr_info("flobj_total=%lu\n", zcache_flobj_total);
+ pr_info("flobj_found=%lu\n", zcache_flobj_found);
+ pr_info("failed_eph_puts=%lu\n", zcache_failed_eph_puts);
+ pr_info("failed_pers_puts=%lu\n", zcache_failed_pers_puts);
+ pr_info("failed_get_free_pages=%lu\n", zcache_failed_getfreepages);
+ pr_info("failed_alloc=%lu\n", zcache_failed_alloc);
+ pr_info("put_to_flush=%lu\n", zcache_put_to_flush);
+ pr_info("compress_poor=%lu\n", zcache_compress_poor);
+ pr_info("mean_compress_poor=%lu\n", zcache_mean_compress_poor);
+ pr_info("eph_ate_tail=%lu\n", zcache_eph_ate_tail);
+ pr_info("eph_ate_tail_failed=%lu\n", zcache_eph_ate_tail_failed);
+ pr_info("pers_ate_eph=%lu\n", zcache_pers_ate_eph);
+ pr_info("pers_ate_eph_failed=%lu\n", zcache_pers_ate_eph_failed);
+ pr_info("evicted_eph_zpages=%lu\n", zcache_evicted_eph_zpages);
+ pr_info("evicted_eph_pageframes=%lu\n", zcache_evicted_eph_pageframes);
+ pr_info("eph_pageframes=%lu\n", zcache_eph_pageframes);
+ pr_info("eph_pageframes_max=%lu\n", zcache_eph_pageframes_max);
+ pr_info("pers_pageframes=%lu\n", zcache_pers_pageframes);
+ pr_info("pers_pageframes_max=%lu\n", zcache_pers_pageframes_max);
+ pr_info("eph_zpages=%lu\n", zcache_eph_zpages);
+ pr_info("eph_zpages_max=%lu\n", zcache_eph_zpages_max);
+ pr_info("pers_zpages=%lu\n", zcache_pers_zpages);
+ pr_info("pers_zpages_max=%lu\n", zcache_pers_zpages_max);
+ pr_info("last_active_file_pageframes=%lu\n",
+ zcache_last_active_file_pageframes);
+ pr_info("last_inactive_file_pageframes=%lu\n",
+ zcache_last_inactive_file_pageframes);
+ pr_info("last_active_anon_pageframes=%lu\n",
+ zcache_last_active_anon_pageframes);
+ pr_info("last_inactive_anon_pageframes=%lu\n",
+ zcache_last_inactive_anon_pageframes);
+ pr_info("eph_nonactive_puts_ignored=%lu\n",
+ zcache_eph_nonactive_puts_ignored);
+ pr_info("pers_nonactive_puts_ignored=%lu\n",
+ zcache_pers_nonactive_puts_ignored);
+ pr_info("eph_zbytes=%llu\n", (unsigned long long)zcache_eph_zbytes);
+ pr_info("eph_zbytes_max=%llu\n",
+ (unsigned long long)zcache_eph_zbytes_max);
+ pr_info("pers_zbytes=%llu\n", (unsigned long long)zcache_pers_zbytes);
+ pr_info("pers_zbytes_max=%llu\n",
+ (unsigned long long)zcache_pers_zbytes_max);
+ pr_info("outstanding_writeback_pages=%lu\n",
+ zcache_outstanding_writeback_pages);
+ pr_info("writtenback_pages=%lu\n", zcache_writtenback_pages);
}
#endif
@@ -923,8 +916,7 @@ static int zcache_cpu_notifier(struct notifier_block *nb,
case CPU_UP_PREPARE:
ret = zcache_comp_cpu_up(cpu);
if (ret != NOTIFY_OK) {
- pr_err("%s: can't allocate compressor xform\n",
- namestr);
+ pr_err("can't allocate compressor xform\n");
return ret;
}
per_cpu(zcache_dstmem, cpu) = (void *)__get_free_pages(
@@ -1401,8 +1393,7 @@ int zcache_get_page(int cli_id, int pool_id, struct
tmem_oid *oidp,
zcache_put_pool(pool);
}
WARN_ONCE((!is_ephemeral(pool) && (ret != 0)),
- "zcache_get fails on persistent pool, "
- "bad things are very likely to happen soon\n");
+ "zcache_get fails on persistent pool, bad things are very
likely to happen soon\n");
#ifdef RAMSTER_TESTING
if (ret != 0 && ret != -1 && !(ret == -EINVAL && is_ephemeral(pool)))
pr_err("TESTING zcache_get tmem_get returns ret=%d\n", ret);
@@ -1484,10 +1475,9 @@ static int zcache_client_destroy_pool(int cli_id, int
pool_id)
local_bh_enable();
kfree(pool);
if (cli_id == LOCAL_CLIENT)
- pr_info("%s: destroyed local pool id=%d\n", namestr, pool_id);
+ pr_info("destroyed local pool id=%d\n", pool_id);
else
- pr_info("%s: destroyed pool id=%d, client=%d\n",
- namestr, pool_id, cli_id);
+ pr_info("destroyed pool id=%d, client=%d\n", pool_id, cli_id);
out:
return ret;
}
@@ -1513,7 +1503,7 @@ int zcache_new_pool(uint16_t cli_id, uint32_t flags)
if (cli->tmem_pools[poolid] == NULL)
break;
if (poolid >= MAX_POOLS_PER_CLIENT) {
- pr_info("%s: pool creation failed: max exceeded\n", namestr);
+ pr_info("pool creation failed: max exceeded\n");
kfree(pool);
poolid = -1;
goto out;
@@ -1524,11 +1514,11 @@ int zcache_new_pool(uint16_t cli_id, uint32_t flags)
tmem_new_pool(pool, flags);
cli->tmem_pools[poolid] = pool;
if (cli_id == LOCAL_CLIENT)
- pr_info("%s: created %s local tmem pool, id=%d\n", namestr,
+ pr_info("created %s local tmem pool, id=%d\n",
flags & TMEM_POOL_PERSIST ? "persistent" : "ephemeral",
poolid);
else
- pr_info("%s: created %s tmem pool, id=%d, client=%d\n", namestr,
+ pr_info("created %s tmem pool, id=%d, client=%d\n",
flags & TMEM_POOL_PERSIST ? "persistent" : "ephemeral",
poolid, cli_id);
out:
@@ -1559,12 +1549,12 @@ int zcache_autocreate_pool(unsigned int cli_id,
unsigned int pool_id, bool eph)
cli = &zcache_clients[cli_id];
if ((eph && disable_cleancache) || (!eph && disable_frontswap)) {
- pr_err("zcache_autocreate_pool: pool type disabled\n");
+ pr_err("%s: pool type disabled\n", __func__);
goto out;
}
if (!cli->allocated) {
if (zcache_new_client(cli_id)) {
- pr_err("zcache_autocreate_pool: can't create client\n");
+ pr_err("%s: can't create client\n", __func__);
goto out;
}
cli = &zcache_clients[cli_id];
@@ -1573,7 +1563,7 @@ int zcache_autocreate_pool(unsigned int cli_id, unsigned
int pool_id, bool eph)
pool = cli->tmem_pools[pool_id];
if (pool != NULL) {
if (pool->persistent && eph) {
- pr_err("zcache_autocreate_pool: type mismatch\n");
+ pr_err("%s: type mismatch\n", __func__);
goto out;
}
ret = 0;
@@ -1588,8 +1578,8 @@ int zcache_autocreate_pool(unsigned int cli_id, unsigned
int pool_id, bool eph)
pool->pool_id = pool_id;
tmem_new_pool(pool, flags);
cli->tmem_pools[pool_id] = pool;
- pr_info("%s: AUTOcreated %s tmem poolid=%d, for remote client=%d\n",
- namestr, flags & TMEM_POOL_PERSIST ? "persistent" : "ephemeral",
+ pr_info("AUTOcreated %s tmem poolid=%d, for remote client=%d\n",
+ flags & TMEM_POOL_PERSIST ? "persistent" : "ephemeral",
pool_id, cli_id);
ret = 0;
out:
@@ -1914,8 +1904,7 @@ static int __init zcache_comp_init(void)
if (*zcache_comp_name != '\0') {
ret = crypto_has_comp(zcache_comp_name, 0, 0);
if (!ret)
- pr_info("zcache: %s not supported\n",
- zcache_comp_name);
+ pr_info("%s not supported\n", zcache_comp_name);
}
if (!ret)
strcpy(zcache_comp_name, "lzo");
@@ -1924,7 +1913,7 @@ static int __init zcache_comp_init(void)
ret = 1;
goto out;
}
- pr_info("zcache: using %s compressor\n", zcache_comp_name);
+ pr_info("using %s compressor\n", zcache_comp_name);
/* alloc percpu transforms */
ret = 0;
@@ -1939,10 +1928,9 @@ static int __init zcache_init(void)
{
int ret = 0;
- if (ramster_enabled) {
- namestr = "ramster";
+ if (ramster_enabled)
ramster_register_pamops(&zcache_pamops);
- }
+
#ifdef CONFIG_DEBUG_FS
zcache_debugfs_init();
#endif
@@ -1953,13 +1941,12 @@ static int __init zcache_init(void)
tmem_register_pamops(&zcache_pamops);
ret = register_cpu_notifier(&zcache_cpu_notifier_block);
if (ret) {
- pr_err("%s: can't register cpu notifier\n", namestr);
+ pr_err("can't register cpu notifier\n");
goto out;
}
ret = zcache_comp_init();
if (ret) {
- pr_err("%s: compressor initialization failed\n",
- namestr);
+ pr_err("compressor initialization failed\n");
goto out;
}
for_each_online_cpu(cpu) {
@@ -1974,7 +1961,7 @@ static int __init zcache_init(void)
sizeof(struct tmem_obj), 0, 0, NULL);
ret = zcache_new_client(LOCAL_CLIENT);
if (ret) {
- pr_err("%s: can't create client\n", namestr);
+ pr_err("can't create client\n");
goto out;
}
zbud_init();
@@ -1983,14 +1970,13 @@ static int __init zcache_init(void)
register_shrinker(&zcache_shrinker);
old_ops = zcache_cleancache_register_ops();
- pr_info("%s: cleancache enabled using kernel transcendent "
- "memory and compression buddies\n", namestr);
+ pr_info("cleancache enabled using kernel transcendent memory
and compression buddies\n");
#ifdef ZCACHE_DEBUG
- pr_info("%s: cleancache: ignorenonactive = %d\n",
- namestr, !disable_cleancache_ignore_nonactive);
+ pr_info("cleancache: ignorenonactive = %d\n",
+ !disable_cleancache_ignore_nonactive);
#endif
if (old_ops.init_fs != NULL)
- pr_warn("%s: cleancache_ops overridden\n", namestr);
+ pr_warn("cleancache_ops overridden\n");
}
if (zcache_enabled && !disable_frontswap) {
struct frontswap_ops old_ops;
@@ -1998,15 +1984,14 @@ static int __init zcache_init(void)
old_ops = zcache_frontswap_register_ops();
if (frontswap_has_exclusive_gets)
frontswap_tmem_exclusive_gets(true);
- pr_info("%s: frontswap enabled using kernel transcendent "
- "memory and compression buddies\n", namestr);
+ pr_info("frontswap enabled using kernel transcendent memory and
compression buddies\n");
#ifdef ZCACHE_DEBUG
- pr_info("%s: frontswap: excl gets = %d active only = %d\n",
- namestr, frontswap_has_exclusive_gets,
+ pr_info("frontswap: excl gets = %d active only = %d\n",
+ frontswap_has_exclusive_gets,
!disable_frontswap_ignore_nonactive);
#endif
if (old_ops.init != NULL)
- pr_warn("%s: frontswap_ops overridden\n", namestr);
+ pr_warn("frontswap_ops overridden\n");
}
if (ramster_enabled)
ramster_init(!disable_cleancache, !disable_frontswap,
--
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