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authorGuillaume Chazarain <guichaz@yahoo.fr>2006-07-24 02:37:24 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-24 15:44:23 -0400
commit2266d8886f64c66e0a4e61e3e1c19dbc27ed00d4 (patch)
tree09666e27746a3aac8c00d6bfc3717939354888e1 /include/net/pkt_sched.h
parent4b79f0af48d529a360d3529def01835dc5d45fe1 (diff)
[PKT_SCHED]: Fix regression in PSCHED_TADD{,2}.
In PSCHED_TADD and PSCHED_TADD2, if delta is less than tv.tv_usec (so, less than USEC_PER_SEC too) then tv_res will be smaller than tv. The affectation "(tv_res).tv_usec = __delta;" is wrong. The fix is to revert to the original code before 4ee303dfeac6451b402e3d8512723d3a0f861857 and change the 'if' in 'while'. [Shuya MAEDA: "while (__delta >= USEC_PER_SEC){ ... }" instead of "while (__delta > USEC_PER_SEC){ ... }"] Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/pkt_sched.h')
-rw-r--r--include/net/pkt_sched.h18
1 files changed, 6 insertions, 12 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 1925c65e617b..f6afee73235d 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -169,23 +169,17 @@ psched_tod_diff(int delta_sec, int bound)
169 169
170#define PSCHED_TADD2(tv, delta, tv_res) \ 170#define PSCHED_TADD2(tv, delta, tv_res) \
171({ \ 171({ \
172 int __delta = (delta); \ 172 int __delta = (tv).tv_usec + (delta); \
173 (tv_res) = (tv); \ 173 (tv_res).tv_sec = (tv).tv_sec; \
174 while(__delta >= USEC_PER_SEC){ \ 174 while (__delta >= USEC_PER_SEC) { (tv_res).tv_sec++; __delta -= USEC_PER_SEC; } \
175 (tv_res).tv_sec++; \
176 __delta -= USEC_PER_SEC; \
177 } \
178 (tv_res).tv_usec = __delta; \ 175 (tv_res).tv_usec = __delta; \
179}) 176})
180 177
181#define PSCHED_TADD(tv, delta) \ 178#define PSCHED_TADD(tv, delta) \
182({ \ 179({ \
183 int __delta = (delta); \ 180 (tv).tv_usec += (delta); \
184 while(__delta >= USEC_PER_SEC){ \ 181 while ((tv).tv_usec >= USEC_PER_SEC) { (tv).tv_sec++; \
185 (tv).tv_sec++; \ 182 (tv).tv_usec -= USEC_PER_SEC; } \
186 __delta -= USEC_PER_SEC; \
187 } \
188 (tv).tv_usec = __delta; \
189}) 183})
190 184
191/* Set/check that time is in the "past perfect"; 185/* Set/check that time is in the "past perfect";